Article
Chemistry, Physical
Min Cheng, Shuxia Bai, Yanze Xia, Xun Zhu, Rong Chen, Qiang Liao
Summary: The composite photocatalyst of CdS/ZnS quantum dots sensitized TiO2 nanotube array exhibited high performance for photocatalytic conversion of CO2 to methanol under visible light, with the product yield varying with different CO2 flow rates and light intensities.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Ceramics
Shuxu Zhu, Guangshun Wu, Ziqi Liu, Shengzhan Zhao, Dandan Cao, Chenxu Li, Guijing Liu
Summary: Nanoflower-like CdS/SnS2/TiO2 NTs ternary heterojunction photocatalysts were synthesized by hydrothermal method, and the relationship between morphology, microscopic morphology, crystallinity, elemental presence state and hydrogen production performance was investigated. The photocatalytic performance, electrochemical property and hydrogen production capacity were compared with other NTs. The results showed high removal efficiency for MB wastewater and good photocatalytic efficiencies for RhB and Cr(VI) removal. The ESR technique confirmed the active radical groups and investigated the photocatalytic mechanism. Hydrogen production rate achieved 97.14 μmol h(-1) cm(-2), demonstrating a new technique for solar energy conversion.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Environmental
Xinmiao Qi, Haoxuan Cai, Xuefeng Zhang, Jiayu Ouyang, Danqing Lu, Xin Guo, Shanshan Jia
Summary: In this study, a novel photocatalytic adsorbent, QNIW, was synthesized to remove Cr(VI) pollution in water resources. QNIW exhibited long-term stability, easy separability, and remarkable adsorption and photocatalytic performance. The study provides valuable insights into the development of high-efficiency, enduringly stable, and easily separable photocatalytic adsorbents.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Aneeqa Sabah, Imrana Shafaqat, Amin Naifar, Hind Albalawi, Mohammed S. Alqahtani, M. G. B. Ashiq, Syeda Ammara Shabbir
Summary: Highly emissive core-multi-shell (CdSe/CdS/ZnS) quantum dots (QDs) with sizes ranging from 2 nm to 5 nm were synthesized using the hot injection method. Polymer capping agents were employed to enhance the QDs' lifetime without the need for a protective atmosphere. The absorption spectra of CdSe/CdS and CdSe/CdS/ZnS displayed a red shift compared to CdSe core, with peaks at 362 nm, 365 nm, 558 nm, and 556 nm. The band gaps measured by voltammetry (Eg 2.09 eV) were in good agreement with the UV-visible spectroscopic data (Eg 2.65 eV). XRD spectra confirmed the quantum confinement effect, showing distinct peaks corresponding to the (111), (220), and (311) planes of cubic structures for CdSe, CdSe/CdS, and CdSe/CdS/ZnS, respectively. The effective mass model was used to calculate the linear and nonlinear optical susceptibilities and absorption coefficients.
Article
Energy & Fuels
Qingyao Wang, Shuxu Zhu, Shengzhan Zhao, Chenxu Li, Runze Wang, Dandan Cao, Guijing Liu
Summary: In this study, a composite Bi/CdS/TiO2 nanotube arrays photocatalyst with remarkable photocatalytic performance was prepared using the SILAR method. The CdS/Bi/TiO2 NTs exhibited excellent photocatalytic performance and stability, suggesting potential applications.
Article
Chemistry, Multidisciplinary
Fengliang Wang, Tingting Hou, Xin Zhao, Wen Yao, Ruiqi Fang, Kui Shen, Yingwei Li
Summary: Solar-driven photocatalytic CO2 reduction is a promising approach for addressing the energy crisis and CO2 pollution. A newly developed photocatalyst shows high efficiency in CO2 reduction and introduces an amines oxidation reaction to further enhance the process.
ADVANCED MATERIALS
(2021)
Article
Engineering, Environmental
Xiaohui Wei, Chunlai Wang, Sheng Ding, Kun Yang, Feng Tian, Fan Li
Summary: The silver nanoparticle/carbon dot/TiO2 nanotube array composite synthesized in this study demonstrated enhanced photocatalytic activity, durability, and high efficiency in degrading methylene blue under visible and UV light, making it a promising catalyst for wastewater treatment and environmental remediation applications.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Electrical & Electronic
Cecilia I. Vazquez, Felipe Montero Bruni, Ana Maria Baruzzi, Rodrigo A. Iglesias
Summary: A non-enzymatic photoelectrochemical method using a CdS|TiO2 nanotubes photoanode is proposed for the detection of aqueous sulfide and ascorbic acid. The sensitivity of both the CdS|TiO2 and CdS|Pt photoanodes is high in the visible range, allowing for detection at micromolar levels for sulfide and ascorbic acid. However, the detection of H2O2 leads to the degradation of CdS and the release of Cd2+ ions into the analyte solution.
IEEE SENSORS JOURNAL
(2023)
Article
Multidisciplinary Sciences
Nida Qutub, Preeti Singh, Suhail Sabir, Suresh Sagadevan, Won-Chun Oh
Summary: Photocatalytic degradation of organic contaminants in wastewater is crucial for ecological and environmental safety. CdS/TiO2 nanocomposites synthesized using a modified Chemical Precipitation technique exhibit high photocatalytic activity and decolorization rate in the degradation of AB-29 dye.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Yanmiao Yu, Lianjie Zhu, Guokai Liu, Mo Qiu, Peiwen Chen, Zhuangzhuang Chang
Summary: The photocatalytic hydrogen production activity of Pd QDs loading Ti3+,N co-doped TiO2 NTA was studied, and the results showed that adding a small amount of alkali salt can significantly increase the hydrogen evolution rate.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Tongtong Wang, Jianmin Li, Rongjie Gao
Summary: A highly ordered lotus-root-shaped TiO2 nanotube array (TNTAs) was prepared by two-step electrochemical anodization, and CdS was grown on TNTAs using ultrasound-assisted continuous ion layer adsorption reaction (SILAR). The effect of CdS cycle times on the performance of TNTAs was investigated, and the results showed that when CdS is deposited for 12 times, the visible light absorption of TNTAs is the highest, with a maximum photocurrent density of 2030 mu A·cm(-2) and a minimum charge transfer resistance Rct of 153.7 Ω·cm(-2).
Article
Engineering, Environmental
Yuan Deng, Wenjun Yan, Yujing Guo, Qiang Wang, Yingpu Bi, Chuan Dong, Lifang Fan
Summary: A photoelectrochemical (PEC) sensing platform was developed using graphene quantum dots decorated TiO2 nanotube arrays (GQDs-decorated TiO2 NTs) for the detection of di-2-ethylhexyl phthalate (DEHP) with low detection limit, high selectivity, and stability. The platform showed promising results in real environmental samples.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Yong Liu, Pengfei Tan, Lu Yang, Hongwei Liu, Jun Pan
Summary: A CsPbBr3-CdS solid-solution photocatalyst was synthesized and found to exhibit efficient CO2 photoreduction under visible light. The addition of CdS enhanced the photogenerated carrier separation ability and stability of the CsPbBr3-CdS solid-solution. This research inspires the development of solid-solution architectures to improve the performance of halide perovskites in CO2 photoreduction.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Physical
Yinjuan Dong, Qing Han, Qiyu Hu, Chunjiang Xu, Congzhao Dong, Yong Peng, Yong Ding, Yaqian Lan
Summary: A multi-component photocatalyst was designed to achieve efficient water splitting through visible light irradiation, without additional sacrificial agents. CdS acts as a strong light harvester, CQDs play a key role in electron transfer, and Ni4P2 serves as a catalyst for hydrogen evolution.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Multidisciplinary
Kai-Wen Feng, Yang Li
Summary: This article describes the development of an efficient photocatalytic system for hydrogen production from formic acid using in situ generated Ni/CdS. By using CdS-Cys quantum dots as photocatalyst and Ni(OAc)2 as H2 production catalyst precursor, a 94% yield of hydrogen was obtained within 5 hours under visible light irradiation. Mechanistic studies revealed the cooperation of dynamic quenching and static quenching, leading to efficient hydrogen production with high selectivity.
Article
Chemistry, Physical
Yandong Xu, Jianjun Liao, Linlin Zhang, Yakun Li, Chengjun Ge
Summary: In this study, a ZnMn2O4 decorated three-dimensional carbon nitride photocatalytic system with good sunlight absorption capacity and efficient charge separation and transfer ability was prepared. The presence of heterostructures, C, O co-doping, and nitrogen defects greatly promoted the separation and transfer of charges, thereby extending its service life. The photocatalytic degradation efficiency of sulfamethoxazole in water reached 94.3% under the synergistic effects, and the synthesized photocatalyst exhibited good chemical stability and recyclability. This study provides a new opportunity to solve the problem of environmental pollution.
Article
Nanoscience & Nanotechnology
Hewei Si, Gu Huang, Jianjun Liao, Adrian C. Fisher, Shiwei Lin
Summary: The integration of EGFET and PEC measurement to construct highly sensitive sensors has been proven feasible by previous research. However, adjusting the interaction between the extended gate and the analyte remains a challenge. In this study, a new sensing strategy was proposed using mutual electrostatic interaction. The designed TCN-extended sensing gate showed excellent performance in the light-activated PEC sensing of tetracycline, demonstrating wide linear ranges, low detection limits, selectivity, reproducibility, and stability. This work expands the paradigm for developing light-regulated FET-based PEC sensors.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Tao Zhang, Yipu Liu, Li Tong, Jie Yu, Shiwei Lin, Yue Li, Hong Jin Fan
Summary: An in situ approach is developed to modify the valence state of octahedral Ni cations in NiFe2O4 spinel oxides, using surface sulfates. This modification enhances the oxygen evolution reaction (OER) performance by promoting the electron occupancy of active sites to near-unity and optimizing the energy barrier of the potential-determining step. The co-modification strategy significantly enhances the electrocatalytic activity.
Article
Chemistry, Multidisciplinary
Juan Du, Yun-Fan Li, Chang-Hua Ding
Summary: Palladium-catalyzed cycloaddition reactions using Pd-p-allyl zwitterions are significant synthetic transformations for the construction of carbon- or heterocycles compounds found in biologically active natural products and pharmaceuticals. Recent studies have explored new applications of previously less-studied Pd-p-allyl zwitterions and designed impressive novel zwitterions, which are diverse and highly reactive intermediates for the synthesis of complex polycyclics and medium-sized cyclic compounds.
CHINESE CHEMICAL LETTERS
(2023)
Article
Chemistry, Physical
Liqin Chen, Jianjun Liao, Chen Li, Yandong Xu, Chengjun Ge, Wen Xu, Xiong He, Wenyu Liu
Summary: An FeCo-LDH/LI-NDG composite electrode material was synthesized on polyimide films using a simple laser-induced technique, which could electrocatalytically activate peroxymonosulfate (PMS) to completely degrade MB in about 6 min with a reaction rate constant of 0.461 min(-1). The reaction system demonstrated good interference resistance and catalytic effectiveness in the pH range of 3 to 9. The chemical quenching and electron paramagnetic resonance (EPR) experiments showed that the non-radical pathway of O-1(2) and the radical pathways of SO4 & BULL;-, & BULL;OH and O-2(& BULL;-) were involved in the reaction synergistically, with O-1(2) playing the dominant role. The dual pathway of PMS electron loss at the anode and O-2(& BULL;-) intermediate transformation at the cathode contributed to the production of O-1(2), and the synergistic effects of electro-activation and catalytic activation of PMS achieved high efficiency in the entire process.
Article
Chemistry, Multidisciplinary
Jian Zhang, Feng Chen, Ruiyu Zou, Jianjun Liao, Yonghui Zhang, Zeyu Zhu, Xinyue Yan, Zhiwen Jiang, Fangzhou Tan
Summary: This paper proposes a CNN-based heavy-metal ion detection system that can automatically, accurately, and efficiently detect the type and concentration of heavy-metal ions. Data from heavy-metal ion solutions was collected using square-wave voltammetry, and a portable electrochemical constant potential instrument was designed for data acquisition. A dataset of 1200 samples was created after data preprocessing and expansion. Finally, a CNN-based detection network called HMID-NET was designed, which simultaneously detects the type and concentration of ions in the solution. The proposed HMID-NET algorithm achieved a classification accuracy of 99.99% and a mean relative error of 8.85% in terms of concentration through testing on 12 sets of solutions with different ionic species and concentrations.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Electrical & Electronic
Hewei Si, Gu Huang, Jianjun Liao, Cao Bian, Shiwei Lin
Summary: It introduces an innovative research field of developing highly sensitive photoelectrochemical (PEC) sensors using transistors. The proposed extended gate field effect transistors-based PEC sensors (EGFET-based PEC sensors) exhibit higher sensitivity compared to traditional three-electrode system-based PEC sensors (TES-based PEC sensors). The experiments conducted using different photoactive materials show that the EGFET-based PEC sensors have more than four times higher sensitivity than the TES-based PEC sensors, making them more suitable for detecting analytes with trace concentration.
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Physical
Yandong Xu, Jianjun Liao, Linlin Zhang, Zihan Sun, Chengjun Ge
Summary: Photocatalytic production of hydrogen peroxide (H2O2) using multi-metal composite sulfide (Ag-CdS1-x@ZnIn2S4-x) with double S vacancies and hollow core-shell Z-type heterojunction structure achieves high productivity. The unique hollow structure improves light source utilization, while the Z-type heterojunction promotes carrier separation and the core-shell structure increases interface area. The presence of dual disulfide vacancies provides good selectivity for 2e- O2 reduction to H2O2. This work provides new insights into selective two-electron photocatalytic H2O2 production and offers ideas for the design of active energy conversion photocatalysts.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Analytical
Yingwen Zhang, Jianjun Liao, Zehao Li, Mingxu Hu, Chao Bian, Shiwei Lin
Summary: This paper proposes a new approach for wearable sweat electrochemical sensors. The sensor uses fabric as the raw material and utilizes Janus fabric to achieve directional transport of sweat and multi-component integrated detection. A patterned sensor fabricated with laser engraving is able to instantaneously detect Na+, pH, and glucose.
Article
Chemistry, Physical
Changsheng Liu, Yan Zhang, Liang Yang, Caizhuang Wang, Xihong Lu, Shiwei Lin
Summary: Natural gas hydrates have attracted attention as a potential alternative energy source, but there is no consensus on their formation mechanism. This paper proposes a method for promoting the rapid formation of gas hydrates by rupturing methane nanobubbles, creating high temperature and pressure conditions for methane-water mixing. Molecular dynamics simulations confirm the formation of gas hydrates through this method. The rupture of methane nanobubbles induced by shock waves leads to increased molecular motion, resulting in extreme local temperature and pressure, facilitating rapid hydrate formation.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Ke Jiang, Yuntian Gao, Peng Zhang, Shiwei Lin, Ling Zhang
Summary: We report a new perchlorate-based hybrid ultramicroporous material, ZJU-194, with a unique flexible-robust network and rich bare oxygen atoms. The activated ZJU-194 enables selective two-step gate-opening adsorption for acetylene (C 2 H 2 ) while blocking the uptake of carbon dioxide (CO 2 ). It exhibits a very high C 2 H 2 /CO 2 selectivity (22.4) at ambient conditions and demonstrates complete separation for 50/50 C 2 H 2 /CO 2 mixtures.
CHINESE CHEMICAL LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Nanxin Li, Jia You, Lanlan Huang, Haoran Zhang, Xianlong Wang, Lihua He, Chunli Gong, Shiwei Lin, Bingging Zhang
Summary: A green photoelectrochemical (PEC) strategy using a polyterthiophene (pTTh) semiconductor is developed to realize NADH regeneration by utilizing water and solar energy as reaction sources. The pTTh exhibits a positive onset potential of 0.6 V vs. RHE for producing enzymatically active 1,4-NADH under simulated sunlight. At an applied potential of 0.1 V vs. RHE for 3 hours, 2.8 mM 1,4-NADH can be generated with a turnover frequency (TOF) of 3.73 h(-1). Additionally, the produced 1,4-NADH can be used in situ to assist glutamate dehydrogenase in catalyzing alpha-ketoglutarate to produce L-glutamate. This study demonstrates a sustainable pathway for high-value NADH production on a polymer semiconductor by converting solar energy.
Article
Environmental Sciences
Liqin Chen, Jianjun Liao, Linlin Zhang, Chen Li, Shuhai He, Chengjun Ge
Summary: In this study, highly dispersed and ultrafine laser-induced nitrogen-doped graphene-wrapped iron cobaltate (LI-FeCo2O4@NDG) catalysts were prepared by one-step carbonization method. The catalyst exhibited efficient degradation of sulfamethoxazole and low metal leaching, with a high reaction rate and nearly 100% utilization and conversion of peroxymonosulfate to singlet oxygen. The core-shell structure of LI-FeCo2O4@NDG accelerated the electron supply and transfer, facilitating the activation of peroxymonosulfate.
Article
Chemistry, Multidisciplinary
Sihan Liu, Runwei Song, Shuai Wang, Weiye Shi, Qin Zhou, Yan Zhang, Chunqing Huo, Shengjue Deng, Shiwei Lin
Summary: The Co/CoO/CoCH (P-CoCH) nanowire core/shell arrays, prepared by a one step hydrothermal method and rapid reduction process, exhibit superior HER performance and cycling stability due to their unique porous structure, larger electrochemical active surface area, and the abundance of active sites.
CHEMICAL COMMUNICATIONS
(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)
