Article
Engineering, Chemical
Yuankun Hao, Xinbo Zhang, Qing Du, Huizhong Wang, Huu Hao Ngo, Wenshan Guo, Yufeng Zhang, Tianwei Long, Li Qi
Summary: A novel integrated system combining an anaerobic membrane bioreactor (AnMBR) and a single-chamber air cathode microbial fuel cell (ScMFC) was designed to enhance methane production and reduce membrane fouling. The system delivered a stable micro-bioelectric field environment with a high voltage output. Compared to the conventional AnMBR, this system increased methane production and reduced soluble microbial product and extracellular polymeric substances concentrations. In addition, the trans membrane pressure also remained in a slow growth status, prolonging the system's operation cycle.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Environmental
Xiangru Song, ChungHyok Jo, Minghua Zhou
Summary: Membrane-like air-cathodes modified with different polyaniline through phase inversion method exhibited dual functions of interception and electrochemical degradation, and possessed good conductivity and porosity. Among them, the cathode with 25 wt% polyaniline showed the highest antibacterial effect and removal rate, as well as high water flux recovery and durability.
Article
Engineering, Environmental
Xinyi Li, Yangtian Huang, Yubiao Lu, Tianbo Jia, Jianxin Wang, Peng Li
Summary: Nitrogen-doped graphene oxide (N-doped GO) catalyst improves the oxygen reduction reaction (ORR) performance of air-cathode microbial fuel cell (AMFC), enhancing the output voltage and power density. The NGO10 catalyst shows the highest output voltage (391.8 mV) and power density (1800 mWm-3) in AMFC, outperforming H-NGO and Pt/C electrodes. High-throughput sequencing reveals diverse bacterial communities in anode and cathode biofilms, with enriched denitrifying bacteria including Marinobacter, Methylophaga, and Arcobacter on NGO10 cathode. Real-time PCR confirms higher expression of denitrification-related genes in the NGO10 cathode biofilm.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Chemical
Yufei Wang, Na Wei, Jia Zeng, Yaochen Wu, Tong Zhou, Guohan Liu, Qiushan Liu, Jin Guo
Summary: The catalytic activity and anti-fouling capacity of nitrogen-doping carbon nanotube modified polyethersulfone membrane (NCNT@PES)/peroxymonosulfate (PMS) system were investigated. The NCNT@PES/PMS system showed almost 100% degradation of ethylenediamine tetra(methylene phosphonic acid) (EDTMP) and about 60% conversion of total phosphorus (TP) into orthophosphate (PO43-) within 1 min. The presence of other substances weakened the catalytic reactions, but the NCNT@PES/PMS system still effectively transformed EDTMP in real sewage effluent and showed anti-fouling properties.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Agricultural Engineering
Meiying Yu, Qiao Yang, Xiaole Yuan, Yunfei Li, Xuepeng Chen, Yujie Feng, Jia Liu
Summary: By doping iron-porphyrin into the membrane cathode, it is possible to enhance the current density and reduce charge transfer resistance, while promoting the occurrence of the oxygen reduction reaction through a direct four-electron transfer pathway. Additionally, iron-porphyrin can improve the permeability properties of the membrane cathode under an electric field, offering a new direction for practical applications in MFCs.
BIORESOURCE TECHNOLOGY
(2021)
Review
Chemistry, Analytical
Amna Anjum, Shaukat Ali Mazari, Zubair Hashmi, Abdul Sattar Jatoi, Rashid Abro
Summary: Cathodes are crucial in assessing the performance of microbial fuel cells, with oxidation reduction reactions improving power density and electrochemical performance. Proper catalyst loading can enhance cathode performance significantly.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Engineering, Environmental
Weifeng Liu, Zihao Zhou, Zhe Li, Yan Yang, Jiao Zhao, Yimin Zhu, Wenjing Miao
Summary: The study introduces a cost-effective non-precious metal catalyst CoP@N-C for oxygen reduction reaction in microbial fuel cells, demonstrating enhanced catalytic activity and power density, compared to traditional activated carbon control.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Xueli Zhang, Zhiyuan Lin, Bolong Liang, Ming Zhong, Mingtao Zhang, Kexun Li, Hao Wang, Cuicui Lv
Summary: A method of preparing porous iron-nitrogen-doped carbon nanospheres using an inexpensive zinc-iron Prussian blue analogue as the precursor was proposed in this study, which significantly improves the performance of activated carbon air-cathode microbial fuel cells.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Deepak Kumar, Geetanjali, Patit Paban Kundu
Summary: Developing advanced non-precious metal catalysts is crucial for microbial fuel cells (MFCs) in oxygen reduction reactions (ORR). Fe-N-C catalysts are considered the best alternative to platinum-based catalysts for ORR. In this study, Fe-N-doped carbon foam catalysts were synthesized using an environmentally friendly and cost-effective Fe-embedded poly (acrylamide-co-acrylonitrile) hydrogel-based carbon foam (Fe@Am-co-An/CF) for MFCs. The Fe@Am-co-An/CF (2:22) catalyst exhibited the highest power density compared to other catalysts, indicating its promising potential for ORR activity in MFCs.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Changshun Chu, Jianting Liu, Liling Wei, Jiejie Feng, Huayi Li, Jianquan Shen
Summary: Fe3C and Fe2P-incorporated N-doped porous carbon (Fe3C/Fe2P@NC-N4Fe2) was prepared using the rich P element in radish via carbothermal reduction method without adding P resources. The catalyst showed excellent ORR performance due to abundant active sites provided by Fe3C and Fe2P and facilitated mass transfer by the porous structure in the N-doped carbon matrix. The AC-MFC assembled with Fe3C/Fe2P@NC-N4Fe2 as the cathodic ORR catalyst exhibited superior power output performance with 948.9 mW m-2, 1.03 times higher than that of 20 wt% Pt/C catalyst. Therefore, Fe3C/Fe2P@NC-N4Fe2 can be a viable alternative to Pt/C catalyst in AC-MFCs.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Nanoscience & Nanotechnology
Simran Kaur Dhillon, Patit Paban Kundu
Summary: The performance of microbial fuel cells (MFCs) can be enhanced by synthesizing a composite material of magnesium cobaltite embedded in nitrogen-doped carbon. The composite serves as an air cathode and demonstrates superior power output compared to traditional catalysts.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Environmental Sciences
Ambika Arkatkar, Arvind Kumar Mungray, Preeti Sharma
Summary: The study tested the application of a microbial patch in MFC to address oxygen diffusion issues, finding that the design improved electron transfer rate, wastewater degradation, and reduced resistance. This simple design also acted as a two-step degradation system for improved wastewater management and green energy generation.
Review
Materials Science, Multidisciplinary
Qian Zhu, Jingping Hu, Bingchuan Liu, Shaogang Hu, Sha Liang, Keke Xiao, Jiakuan Yang, Huijie Hou
Summary: Microbial fuel cells have received significant attention as a sustainable technology for addressing environmental pollution and energy shortage. Recent advancements in functional materials for MFC systems include the development of enhanced anode materials, cost-effective separators/membranes, and efficient cathode catalysts to improve overall performance and efficiency. Challenges and future prospects for functional materials in MFC applications are also discussed in this review.
ENERGY & ENVIRONMENTAL MATERIALS
(2022)
Article
Agricultural Engineering
Qian Zhu, Xiaoxuan Wang, Jingping Hu, Sijing Chen, Shaogang Hu, Yaqian Wu, Bingchuan Liu, Keke Xiao, Sha Liang, Jiakuan Yang, Huijie Hou
Summary: A novel microbial fuel cell-photocatalysis system was proposed for the synergistic degradation of 2,4,6-trichlorophenol with simultaneous electricity generation. The system showed stable electricity generation and efficient degradation of the contaminant, as confirmed by the detection of intermediates and shifts in microbial community structures.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Rui Huang, Mingyue Geng, Shanshan Gao, Xing Yin, Jiayu Tian
Summary: This study aimed to alleviate membrane fouling and improve nitrogen removal by applying high sludge concentration in MBR. The results showed that high sludge concentration enhanced total nitrogen removal and reduced pressure development rate. Microbial community analysis revealed the enrichment of functional bacteria associated with nitrogen removal and the inhibition of Thiothrix overgrowth. Moreover, key genes involved in nitrogen metabolism and amino acid degradation were up-regulated under high sludge concentration. Overall, high sludge concentration improved microbial assembly and functional gene abundance, which enhanced nitrogen removal and alleviated membrane fouling.
BIORESOURCE TECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Na Chu, Wen Hao, Qinglian Wu, Qinjun Liang, Yong Jiang, Peng Liang, Zhiyong Jason Ren, Raymond Jianxiong Zeng
Summary: This review comprehensively discusses the current state of the art and prospects of medium chain fatty acids (MCFAs) production in microbial electrosynthesis (MES) from CO2 and organic wastes. It introduces the fundamental mechanisms and development of MCFAs production via conventional fermentation, and summarizes the studies on MCFAs production in MES, highlighting the strategy of multiple-electron donors (EDs). The challenges for MCFAs production in MES from CO2 are presented, and the possible applications of electrochemical approaches for promoting the bioconversion of waste materials with MCFAs production are analyzed. The future directions include multi-stage reactions, substrate supply, product extraction, and microbial pathways.
Article
Environmental Sciences
Wei Sun, Zhili Lu, Kuichang Zuo, Shuo Xu, Baoyou Shi, Haibo Wang
Summary: The study demonstrated that the combination of OPB cathode and RICT anode showed higher efficiency in electrochemical disinfection of Pseudomonas putida compared to the system with graphite cathode and RICT anode, mainly due to the ability of OPB cathode to provide more adsorption sites and reduce electrolyte transport resistance.
Article
Engineering, Environmental
Shuyi Wang, Xiang Qi, Yong Jiang, Panpan Liu, Wen Hao, Jinbin Han, Peng Liang
Summary: Extensive research has been conducted to enhance the sensitivity of electroactive biofilm-based sensors, demonstrating the feasibility of using antibiotics like azithromycin to regulate the EAB and improve the sensor's performance. The novel composite electrode, AZM@GP, showed promising results in increasing the EAB-biosensor's sensitivity when exposed to toxic formaldehyde.
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
(2022)
Article
Engineering, Environmental
Jiao Chen, Kuichang Zuo, Bing Li, Jiahui Hu, Wenbao Liu, Dongsheng Xia, Lin Lin, Jiajin Liang, Xiao-yan Li
Summary: This study demonstrates the high performance of a freestanding fungal hypha activated carbon pad (FhACPad) electrode for capacitive deionization (CDI) process, exhibiting high electrical conductivity and rapid ion transport properties. Compared to conventional powdered activated carbon (PAC) electrodes, FhACPad shows higher salt adsorption capacity and desalination rate under similar desalination conditions.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Shaolin Yang, Qian Dong, Siqi Li, Zhao Cheng, Xiaofeng Kang, Daheng Ren, Chenyang Xu, Xiaohong Zhou, Peng Liang, Lingli Sun, Jianhong Zhao, Yang Jiao, Taoli Han, Yanchen Liu, Yi Qian, Yi Liu, Xia Huang, Jiuhui Qu
Summary: This study conducted a field trial on the presence of SARS-CoV-2 in wastewater facilities in Beijing after the end of the COVID-19 epidemics. The results showed that the wastewater treatment facility is a large repository for SARS-CoV-2. The viral RNA was still present in hospital sewage for 15 days and in municipal wastewater treatment plants for more than 19 days. The study highlights the persistence of SARS-CoV-2 RNA in wastewater, especially at lower temperatures.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Jiao Chen, Kuichang Zuo, Yilin Li, Xiaochuan Huang, Jiahui Hu, Ying Yang, Weipeng Wang, Long Chen, Amit Jain, Rafael Verduzco, Xiaoyan Li, Qilin Li
Summary: This study demonstrates the selective removal of nitrate (NO3-) in an electrosorption process using a thin, porous carbonized eggshell membrane (CESM). The CESM exhibits high selectivity for NO3- over other ions and achieves a significantly higher NO3-/Cl- selectivity compared to activated carbon electrodes. This high selectivity leads to a reduction in energy consumption for nitrate removal.
Article
Environmental Sciences
Jinbin Han, Xiang Qi, Peng Liang
Summary: Excess nitrate in water is a challenge for ecosystem and human health. This study used bovine serum albumin (BSA) as a supplementary material to improve the rate of sulfur autotrophic denitrification. The experiment showed that a larger amount of BSA significantly increased the denitrification rate. In a packed bed reactor, sulfur particles with 1% BSA had a faster start-up and better denitrification performance compared to the control group.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
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
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
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)
