Article
Environmental Sciences
Mpumelelo T. Matsena, Mziwenene Mabuse, Shepherd M. Tichapondwa, Evans M. N. Chirwa
Summary: The study demonstrates that optimizing the particle size of granular activated carbon (GAC) can enhance the performance and power output of microbial fuel cells (MFC), while different particle sizes have varying effects on MFC performance.
Article
Biochemistry & Molecular Biology
Lea Ouaknin Hirsch, Irina Amar Dubrovin, Bharath Gandu, Efrat Emanuel, Birthe Veno Kjellerup, Gizem Elif Ugur, Alex Schechter, Rivka Cahan
Summary: This study evaluated the potential of kaolin for enhancing bacterial attachment and conductive particle attachment to the anode in microbial fuel cells (MFCs). The results showed that MFCs based on a kaolin-modified carbon-cloth anode exhibited higher voltage, power density, and Coulombic efficiency compared to MFCs with only kaolin or bare anodes. The study demonstrated the advantage of using kaolin as a natural adhesive for immobilizing exoelectrogenic bacteria to anode material in MFCs.
BIOELECTROCHEMISTRY
(2023)
Article
Energy & Fuels
Anup Gurung, Bhim Sen Thapa, Seong-Yun Ko, Ebenezer Ashun, Umair Ali Toor, Sang-Eun Oh
Summary: We developed a strategy for efficiently reducing nitrates in microbial fuel cells (MFCs) using a granular activated carbon (GAC)-biocathode. The GAC was developed by acclimatizing and enriching denitrifying bacteria under a redox potential generated from MFCs. The GAC-biocathode demonstrated excellent capacitive property and can actively reduce nitrate for over thirty days with different cathode materials and circulation speeds.
Article
Agricultural Engineering
Li Meng, Min Feng, Jinzhi Sun, Ruiwen Wang, Fengyu Qu, Chunyu Yang, Wei Guo
Summary: Carbonized Chinese dates (CCD) as anodes for microbial fuel cells (MFC) exhibit excellent biocompatibility, fast start-up, and charge transfer. Their porous structure allows efficient ion transport and microbial community succession, and the CCD anodes can load higher weight of biomass.
BIORESOURCE TECHNOLOGY
(2022)
Article
Electrochemistry
Meiqiong Chen, Wenxian Guo, Yan Zhang, Hongfei Xiao, Jiajin Lin, Yuan Rao, Min Zhang, Faliang Cheng, Xihong Lu
Summary: In this study, natural cassava straws are used to prepare activated nitrogen-doped porous carbon, which dramatically enhances its electrochemical performance with a maximum power density of 2204.5 W m -3. This provides a meaningful reference for the development of biomass-based, highly efficient, three-dimensional carbon anodes.
ELECTROCHIMICA ACTA
(2021)
Article
Nanoscience & Nanotechnology
Yanping Wang, Xusen Cheng, Ke Liu, Xiaofan Dai, Jinteng Qi, Zhuo Ma, Yunfeng Qiu, Shaoqin Liu
Summary: This study prepared a hierarchical nanomaterial modified electrode for improving the anode performance of microbial fuel cells (MFCs). The results showed that compared with the conventional electrode, the modified electrode had better wettability, capacitance, diffusion coefficient, and smaller charge transfer resistance. By promoting the enrichment growth of exoelectrogens and effectively driving the extracellular electron transfer process, the electrode enabled MFCs to achieve higher power density and COD removal amount.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Environmental
Mengjiao Gao, Hongyu Dang, Xin Zou, Najiaowa Yu, Hengbo Guo, Yiduo Yao, Yang Liu
Summary: The addition of granular activated carbon (GAC) in anammox reactors significantly shortened the enrichment time and improved the nitrogen removal efficiency. GAC likely enhanced the oxidation reaction, increased the concentration of signal molecules, and promoted the growth of microorganisms.
Article
Materials Science, Multidisciplinary
Shixuan Jin, Yiyu Feng, Jichao Jia, Fulai Zhao, Zijie Wu, Peng Long, Feng Li, Huitao Yu, Chi Yang, Qijing Liu, Baocai Zhang, Hao Song, Wei Feng
Summary: Optimizing the structure of electrode materials is an effective strategy for designing high-power microbial fuel cells (MFCs). In this study, a three-dimensional (3D) nitrogen-doped multiwalled carbon nanotube/graphene (N-MWCNT/GA) composite aerogel is synthesized as the anode for MFCs. The N-MWCNT/GA electrode has a macroporous hydrophilic structure and low intrinsic resistance, enabling high-density loading of microbes and facilitating extracellular electron transfer, resulting in high-power output performance of the MFC. This research demonstrates the potential of 3D N-MWCNT/GA anodes for high-power MFCs in different environments by optimizing their chemical and microstructures.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Engineering, Environmental
Yuanfeng Liu, Yaxin Sun, Huiyu Li, Tingli Ren, Congju Lix
Summary: Microbial fuel cells (MFCs) have great potential for recovering electrical energy from waste and biomass, but their practical application is hindered by inefficient power production and high costs. In this study, a bacteria/electrospun oriented carbon nanofibers integrating with carbon nanotubes (BEO-CNFs/CNTs) anode was developed to enhance MFC performance. The BEO-CNFs/CNTs anode greatly improved bacterial loading content and extracellular electron transfer (EET) efficiency, leading to a significantly higher power density than other anodes. This research provides a new perspective for preparing efficient anodes using electrospinning technology.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Polymer Science
Pengcheng Zhu, Shumin Zhuo, Weiying Zhang, Xiaoguang Ying, Jianying Huang, Xiao Li
Summary: Microbial fuel cells (MFCs) show potential for simultaneous organic wastewater degradation and power generation. This study focuses on a biocompatible composite, CM-SA/AC, as an efficient anode for MFCs. Results indicate that the addition of activated carbon promotes bacterial immobilization and fast start-up of MFCs. In terms of candied wastewater treatment, the MFC with immobilized CM-SA/AC anode exhibits higher power density, longer stabilization time, and smaller charge-transfer resistance compared to MFCs with carbon felt anode. The total removal rate of chemical oxygen demand reaches 79.4%. This study contributes to the development of inexpensive and biocompatible anodes for MFCs in wastewater treatment.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Green & Sustainable Science & Technology
Jie Wang, Bin Li, Shuping Wang, Tianbao Liu, Boyu Jia, Weizhen Liu, Peng Dong
Summary: Microbial fuel cells have the potential to replace fossil energy sources, but their commercial application is limited by poor anode performance. In this study, iron oxide modified carbon cloth was prepared to enhance the electron transfer function of electricity-producing microorganisms in microbial fuel cells. The modified carbon cloth effectively improved the electrochemical performance and biocompatibility of the anode. This research provides a strategy for preparing high-performance microbial fuel cell anode materials, thus supporting their eventual commercialization.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Chemical
Jingkai Zhao, Yuan Li, Yifan Lu, Yixuan Wang, Jihua Yang, Shihan Zhang, Jianmeng Chen, Jiexu Ye, Ke Feng
Summary: In this study, AL-MEC systems were proposed for the degradation of gaseous propanethiol, utilizing the advantages of the airlift bioreactor and microbial electrolysis cell. The modified electrodes, PPy and PPy/CNTs, enhanced the biodegradation process and achieved higher removal efficiencies compared to the control system with an unmodified graphite electrode.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Green & Sustainable Science & Technology
Kaili Zhu, Shuangfei Wang, Hui Liu, Shijie Liu, Jian Zhang, Jinxia Yuan, Wencai Fu, Wenhao Dang, Yihu Xu, Xiao Yang, Zhiwei Wang
Summary: Developing high-performance anode materials is crucial for improving the performance of microbial fuel cells (MFCs). In this study, a porous carbon nanoparticle was prepared and used as the anode material. The decorated MFCs showed higher power density and current density compared to conventional carbon cloth anodes. The proposed anode also enhanced extracellular electron transfer and biofilm formation. The findings suggest a method for preparing anode materials with adjustable structure and excellent properties, and provide a strategy for the application of high-performance anodes in MFCs.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Environmental
Le Chen, Ru Zhang, Yuehan Li, Yajie Zhang, Wei Fang, Panyue Zhang, Guangming Zhang
Summary: This study investigated the feasibility of enhancing high-strength sulfate organic wastewater anaerobic digestion by adding granular activated carbon (GAC) and the internal driving mechanisms. The results showed that the UASB reactor with GAC had higher stability in COD removal efficiency and CH4 production. The enrichment of key microorganisms, the promotion of direct interspecies electron transfer (DIET) methanogenesis, and the improvement of functional metabolism activity were identified as important reasons for the higher methanogenic activity in GAC reactor sludge. The study also revealed a potential syntrophic partnership between sulfate-reducing bacteria (Desulfovibrio) and Methanosaeta.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Pinpin Yang, Yaqian Gao, Naiyu Wang, Yujie Zhu, Lefei Xue, Yu Han, Jia Liu, Weihua He, Yujie Feng
Summary: Porous anodes improve system performance in microbial electrochemical systems by increasing the specific surface area for electroactive bacteria. Multilayer anodes with different pore diameters were constructed to assess the impact of pore size and depth on anode performance. The millimeter-scale pores inside the bioanode have a limited effect in increasing power, while larger pore diameters result in higher maximum power density. Electricigens can colonize into pore channels for at least 10 mm with a pore diameter ≥3 mm and current densities >0.05 A m-2. However, in the pores channel with 0.5 mm diameter, electricigens can only colonize to a depth of 2 mm. The biofilm thickness, electricity output, metabolic activity, and biocommunity changed with pore depth and were restricted by the limited mass transfer.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Xiaofan Yang, Changyong Zhang, Xinran Zhang, Shaoyu Deng, Xiang Cheng, T. David Waite
Summary: This study investigated the crystallization of vivianite in the presence of dissolved oxygen (DO) at pHs 5-7. The results showed that DO had a significant impact on the crystallization process, which was highly pH-dependent. At pH 5, slow crystallization with highly crystalline vivianite was observed, but the P removal efficiency was only 30-40%. At pH 6 and 7, the removal of P from the solution was more effective (to >90%), but the efficiency decreased when FeII oxidation became more severe.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Cong Chen, Zhinan Dai, Yifan Li, Qin Zeng, Yang Yu, Xin Wang, Changyong Zhang, Le Han
Summary: This study proposes a novel membrane stripping process by integrating a cation exchange membrane (CEM) in alkali-driven Donnan dialysis prior to hydrophobic gas permeable membranes (GPMs) for efficient ammonia recovery. The new process significantly mitigates membrane fouling and shows potential for ammonia recovery from high-strength complex streams.
Article
Engineering, Chemical
Yunfei He, Danyang Li, Kuichang Zuo, Fan Yang, Tie Gao, Peng Liang
Summary: This study developed a customized dual-chamber electrochemical reactor to recover phosphorus (P) from wastewater. The P removal efficiency of the dual-chamber reactor was 2.2 times higher than that of the single-chamber reactor. The purity of the generated vivianite reached 98.3% as confirmed by EDS analysis. High P concentration, moderate pH, and adequate current density were found to be conducive to vivianite production.
Review
Engineering, Environmental
Na Chu, Yong Jiang, Qinjun Liang, Panpan Liu, Donglin Wang, Xueming Chen, Daping Li, Peng Liang, Raymond Jianxiong Zeng, Yifeng Zhang
Summary: This paper summarizes the advances in electricity-driven microbial metabolism for resource recovery from wastewater and industrial discharges. It discusses the design of electrocatalysts, microbes, and hybrid systems, as well as quantitative comparisons and critical discussions on electrocatalyst-assisted microbial electrosynthesis. The paper also systematically reviews nitrogen recovery processes and discusses the synchronous metabolism of carbon and nitrogen using hybrid inorganic-biological systems, providing valuable insights for future trends in this field.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Yuyi Gu, Xiang Qi, Xufei Yang, Yong Jiang, Panpan Liu, Xiangchun Quan, Peng Liang
Summary: Microbial extracellular electron transfer (EET) is crucial for bioenergy production and wastewater resource recovery. This review summarizes the conductivity of nanowires, biofilms, and granular sludge, and discusses the factors that affect conductivity difference in detail. The high conductivity of nanowires does not necessarily result in efficient EET in microbial aggregates due to non-conductive substances and contact resistance. Improving the conductivity measurement of microbial aggregates is important for calculating EET flux and comparing it with mass transfer coefficients.
Article
Engineering, Environmental
Yifan Gao, Shuai Liang, Quanbiao Zhang, Kunpeng Wang, Peng Liang, Xia Huang
Summary: The interaction between anodic and cathodic reactions in electrocatalytic membrane filtration (EMF) systems has great versatility in meeting complex water treatment requirements. However, current studies mostly focus on half-cell reactions with a single electrocatalytic membrane, limiting the research progress of EMF technology. In this study, a coupling strategy was developed to achieve ultra-efficient degradation performance and regulable reaction mechanisms through the interaction of anodic and cathodic reactions. A six configurations of electrocatalytic dual-membrane filtration (EDMF) system were established and systematically investigated. Based on the results, a regulation strategy for flexible tuning of direct non-radical oxidation and indirect oxidation was proposed. The findings demonstrate the versatility and tunability of the reaction mechanism and performance of the EDMF system, laying a foundation for future development of ultra-efficient and mechanism-adjustable electrocatalysis technologies.
Article
Engineering, Environmental
Xi Luo, Ao Li, Xue Xia, Peng Liang, Xia Huang
Summary: H2O2 was produced efficiently in microbial reverse-electrodialysis cells (MRCs) coupled with thermolytic solutions, using carbon black (CB) as the catalyst. The optimum CB loading was found to be 10 mg/cm(2) and the optimum number of cell pairs was three, resulting in a high H2O2 production rate of 0.99 +/- 0.10 mmol/(L.h), with a 52 +/- 2% H2O2 recovery efficiency and a maximum power density of 780 +/- 37 mW/m(2). Increasing the number of cell pairs to five increased the maximum power density, but had limited effects on H2O2 production. These findings highlight the efficiency of MRCs in sustainable H2O2 production.
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
(2023)
Review
Nanoscience & Nanotechnology
Kuichang Zuo, Sergi Garcia-Segura, Gabriel A. Cerron-Calle, Feng-Yang Chen, Xiaoyin Tian, Xiaoxiong Wang, Xiaochuan Huang, Haotian Wang, Pedro J. J. Alvarez, Jun Lou, Menachem Elimelech, Qilin Li
Summary: Electrified processes provide a chemical-free solution for removing a wide range of contaminants from water, including those difficult to treat using conventional methods. This review presents the principles of several electrified water treatment processes and emphasizes the importance of electrode materials in contaminant transport and transformation.
NATURE REVIEWS MATERIALS
(2023)
Article
Environmental Sciences
Yuyang Sun, Shikha Garg, Changyong Zhang, Jiangzhou Xie, T. David Waite
Summary: In this study, the efficiency of five cathode materials (carbon felt, titanium plate, graphite plate, copper plate, and stainless-steel plate) in recovering nickel was investigated. The highest Ni removal efficiency of 81.6% was achieved with the carbon felt cathode, which was 30% higher than that of the titanium cathode. The chemical composition of the deposits was independent of the cathodic material, but the morphology of deposition varied with the cathode material. The accumulated Ni on the carbon felt surface was successfully recovered either as a nickel salt solution by acid leaching or as high purity NiO by calcinating the Ni-loaded carbon felt cathode at over 800°C. The regenerated carbon felt showed comparable performance to the fresh cathode even after 10 cycles of use and regeneration, confirming its stability and reusability.
Article
Engineering, Environmental
Lei Wu, Shikha Garg, Jiangzhou Xie, Changyong Zhang, Yuan Wang, T. David Waite
Summary: The study investigates the treatment of solutions containing Cu/Ni-EDTA complexes using an electrochemical process. The results show that Cu-EDTA is decomplexed and subsequently electrodeposited as Cu(0) at the cathode, while the reduction of Ni-EDTA at the cathode is insignificant. Ni removal mainly occurs through anodic oxidation of EDTA in Ni-EDTA, resulting in the release of Ni2+ and subsequent deposition as Ni(0) on the cathode. A kinetic model describing the key reactions in the electrolysis process satisfactorily explains the removal of EDTA, Cu, Ni, and TOC.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Xiang Qi, Jinbin Han, Ziwei Kou, Peng Liang
Summary: This study demonstrates that the use of supplementary sulfide in S0 autotrophic denitrification (SAD) can greatly enhance the denitrification efficiency and accelerate the start-up of reactors. Additionally, the application of sulfide promotes the development of biofilm, enabling the reactor to better adapt to low temperature conditions and maintain a high denitrification capacity.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Haoyu Yin, Lihu Liu, Jinxing Ma, Changyong Zhang, Guohong Qiu
Summary: This study constructed an asymmetric flow-electrode electrochemical separation (AFES) system, which efficiently removes As(III) from groundwater. The system achieves this through self-alkalization and the adsorption of H+ on the cathode, resulting in the removal of As(V) predominantly. The system shows stability and superior removal performance.
Article
Engineering, Environmental
Yuyang Sun, Shikha Garg, Changyong Zhang, Boyue Lian, T. David Waite
Summary: In this study, an electrochemical advanced oxidation process (EAOP) was used to effectively degrade Ni-EDTA complexes in electroless nickel plating wastewaters. The degradation of NiEDTA complexes occurred at/near the anode surface via interaction with hydroxyl radicals generated on water splitting. The rate of Ni-EDTA degradation was controlled by the rate of transport of Ni-EDTA to the anode surface.
ACS ES&T ENGINEERING
(2023)
Article
Engineering, Environmental
Boyue Lian, Yuyang Sun, Yuan Wang, Shikha Garg, Changyong Zhang, Yong Chen, Yong Tu, T. David Waite
Summary: Anodic oxidation is an effective technology for the degradation of contaminants in wastewater. A three-dimensional computational fluid dynamics (CFD) model was developed to investigate the flow behavior and concentration profiles of Ni-EDTA complexes during anodic oxidation. The results showed that reducing the electrode aperture size enhanced the degradation rate, and a woven electrode exhibited the highest performance. This study provides insights for the optimization of anode design and reactor operation in electrochemical advanced oxidation processes.
ACS ES&T ENGINEERING
(2023)
Article
Biophysics
Xinning Liu, Xiang Qi, Yuyi Gu, Xia Huang, Peng Liang
Summary: As frequent water ecological pollution caused by toxicant leakage becomes more serious, early-warning for toxicity presented in water environment has attracted increasing attention. This study employed titanium mesh (TiM) to construct an electrochemically active biofilm (EAB) sensor, which significantly improved the sensor's sensitivity for low-concentration toxicity warning. The effects of mesh size and operation mode on the sensor's sensitivity were further investigated.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Electrochemistry
Abdul Qayoom Mugheri, Shaista Khan, Ali Asghar Sangah, Aijaz Ahmed Bhutto, Muhammad Younis Laghari, Nadeem Ahmed Mugheri, Asif Ali Jamali, Arsalan Ahmed Mugheri, Nagji Sodho, Abdul Waheed Mastoi, Aftab Kandhro
Summary: Green hydrogen has the potential to transition to a pollution-free energy infrastructure. This study proposes a solution to produce hydrogen during the photoelectrochemical process, offering greater stability and control over chemical reactions. Techno-economic assessments show the efficiency and economic feasibility of co-producing value-added chemicals to enhance green hydrogen production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Danpeng Cheng, Wuxin Sha, Qigao Han, Shun Tang, Jun Zhong, Jinqiao Du, Jie Tian, Yuan-Cheng Cao
Summary: LiNixCoyMn1-x-yO2 (NCM) is a critical cathode material for lithium-ion batteries in electric vehicles. The aging of cathode/electrolyte interfaces leads to capacity degradation and long-term cycle instability. A novel neural network model called ACGNet is developed to predict electrochemical stability windows of crystals, allowing for high-throughput screening of coating materials. LiPO3 is identified as a promising coating material with high oxidation voltage and low cost, which significantly improves the cycle stability of NCM batteries. This study demonstrates the accuracy and potential of machine learning in battery materials.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
P. Mohana, R. Yuvakkumar, G. Ravi, S. Arunmetha
Summary: This study successfully fabricates a non-noble CuO/NiO/rGO nanocomposite and investigates its electrocatalytic performance for oxygen evolution reaction in alkaline environment. The experimental results demonstrate that the electrocatalyst exhibits high activity and good stability, offering a new synthetic approach for sustainable energy production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Qiong Qu, Jing Guo, Hongyu Wang, Kai Zhang, Jingde Li
Summary: In this study, a bifunctional electrode host design consisting of carbon nanofibers implanted ordered porous Co-decorated Al2O3 supported on carbon nanotube film (CNTF) was proposed to address the shuttling effect of lithium polysulfides (LiPSs) and dendrite formation of metal lithium anode in lithium-sulfur (Li-S) batteries. The electrode exhibited excellent conductivity, efficient confinement of LiPSs, and catalytic conversion performance, resulting in high initial capacity and good capacity retention during cycling. As an anode, the electrode showed excellent Li+ diffusion performance and uniform lithium growth behavior, achieving a dendrite-free lithium electrode. The flexible pack cell assembled from these electrodes delivered a specific capacity of 972 mAh g(-1) with good capacity retention.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Hong Zhang, Jin-Peng Yu, Chen Chen, Cheng-Yong Shu, Guang-Yu Xu, Jie Ren, Kai Cui, Wen-Fang Cai, Yun-Hai Wang, Kun Guo
Summary: Spray coating of acetylene black nanoparticles onto stainless steel mesh can enhance its biofilm formation ability and current density, making it a promising electrode material for microbial electrochemical systems. The spray coating method is simple, cost-effective, and suitable for large-size stainless steel electrodes.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Binpeng Hou, Jingjin Chen, Li-Hong Zhang, Xiaowen Shi, Zizhong Zhu
Summary: The electrochemical performance of Li1.20Mn0.44Ni0.32Co0.04O2 and its oxygen-deficient phase Li1.20Mn0.44Ni0.32Co0.04O1.83 was studied through first-principles calculations. The results show that the oxygen-deficient phase has a higher theoretical capacity but lower voltage platform and higher chemical activity compared to the pristine phase.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Yating Du, Sayoko Shironita, Daisuke Asakura, Eiji Hosono, Yoshitsugu Sone, Yugo Miseki, Eiichi Kobayashi, Minoru Umeda
Summary: This study investigates the effect of high- and low-temperature environments on the charge-discharge performance of a Li-ion battery. The deterioration mechanisms of the battery at different temperatures are analyzed through various characterization techniques. The results indicate that the battery performance deteriorates more significantly at a low-temperature environment of 5 degrees C compared to higher temperatures. The understanding of the deterioration mechanisms can contribute to the development of safer battery usage methods.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Si-Si Shi, Zhi-Xiang Yuan, Fei Zhang, Ping Chen
Summary: In this study, a new nano-electrocatalyst was prepared, which exhibited superior electrocatalytic activity for the reduction of NO2- to ammonia in a neutral electrolyte, potentially due to the synergistic enhancement between Co3O4-x and Co.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Berna Dalkiran, Havva Bekirog
Summary: This study reports the use of deep eutectic solvents (DES) based on ethylene glycol and urea as low-cost and green electrolytes for enhancing electrochemical detection of natural antioxidants. The study successfully developed a disposable and effective electrochemical sensing platform for simultaneous determination of ascorbic acid (AA) and gallic acid (GA) using NaOH nanorods on a pencil graphite electrode. The proposed electrode showed improved analytical performance, with higher peak currents and shifted oxidation potentials in DES compared to BR buffer medium.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Sijun Ren, Jianguo Huang
Summary: In this study, a novel bio-inspired nanofibrous WO3/carbon composite was synthesized using a facile hydrothermal method. The three-dimensional network structure of the composite alleviated the volume expansion of WO3 nanorods and enhanced the charge-transport kinetics. The optimized composite exhibited superior lithium storage properties.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Zhilong Zheng, Yu Chen, Hongxia Yin, Hengbo Xiao, Xiangji Zhou, Zhiwen Li, Ximin Li, Jin Chen, Songliu Yuan, Junjie Guo, Haibin Yu, Zhen Zhang, Lihua Qian
Summary: This study found that interstitial Zn cations in CoMoO4 can modulate the dissolution kinetics of Mo cations and improve the OER performance. The interstitial Zn cations can prevent the dissolution of Co cations at high potential, enhancing the durability of the catalyst.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Xiaobo Lin, Shern R. Tee, Debra J. Searles, Peter T. Cummings
Summary: Molecular dynamics simulations using the constant potential method were used to investigate the charging dynamics and charge storage of supercapacitors. The simulations revealed that the water-in-salt electrolyte exhibited the highest charge storage and significantly higher capacitance on the negative electrode. The varying contributions of different electrode regions to supercapacitor performance were also demonstrated.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Wiktoria Lipinska, Vita Saska, Katarzyna Siuzdak, Jakub Karczewski, Karol Zaleski, Emerson Coy, Anne de Poulpiquet, Ievgen Mazurenko, Elisabeth Lojou
Summary: The spatial distribution of enzymes on electrodes is important for bioelectrocatalysis. In this study, controlled spatial distribution of gold nanoparticles on Ti nanodimples was achieved. The efficiency of enzymatic O2 reduction was found to be influenced by the size of the gold nanoparticles and their colocalization with TiO2. The highest stability of enzymatic current was observed with the largest gold nanoparticles.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Tariq M. Al-Hejri, Zeenat A. Shaikh, Ahmed H. Al-Naggar, Siddheshwar D. Raut, Tabassum Siddiqui, Hamdan M. Danamah, Vijaykumar V. Jadhav, Abdullah M. Al-Enizi, Rajaram S. Mane
Summary: This study explores a promising self-growth approach for the synthesis of nickel hydroxide (Ni(OH)2) nanosponge-balls on the surface of a nickel-foam (NiF) electrode. The modified NiF electrode, named Ni(OH)2@NiF, shows distinctive nanosponge-ball morphology and demonstrates excellent energy storage capability and electrocatalytic performance in both hydrogen and oxygen evolution reactions.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Rafael Del Olmo, Gregorio Guzman-Gonzalez, Oihane Sanz, Maria Forsyth, Nerea Casado
Summary: The use of Lithium-Ion Batteries (LIBs) is becoming increasingly extensive, and it is important to optimize the devices to achieve their maximum practical specific capacity. In this study, mixed ionic-electronic conducting (MIEC) binders based on PEDOT:PSS and PEDOT: PDADMA-TFSI were developed for Li-ion cathodes, and their performance was compared with conventional formulations. The influence of electrode formulations, including the addition of conducting carbon and an Organic Ionic Plastic Cristal (OIPC), was also analyzed. The proposed binders showed improved performance compared to conventional formulations with different electrolyte types and active materials.
ELECTROCHIMICA ACTA
(2024)
