Article
Chemistry, Physical
Wenjie Yang, Huizhu Zhou, Ling Wang, Yuehua Li, Zhangxing He, Chao Han, Lei Dai
Summary: Perovskite proton conductors BaxZr0.6Hf0.2Y0.2O3-delta were successfully prepared by high temperature solid state method. Ba excess was found to enhance the sinterability and conductivity of the samples.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Ceramics
Mingyang Zhou, Zhijun Liu, Meilong Chen, Ziyi Zhu, Dan Cao, Jiang Liu
Summary: Protonic ceramic fuel cells (PCFCs) using BaZr0.8-xCexY0.2O3-delta (BZCY) as electrolyte materials were studied for their electrochemical performance and chemical stability. The results showed that increasing Ce4+ content reduced electronic hole conductivity, especially at high temperature. H-2 atmosphere decreased the conductive activation energy of BZCY, while air atmosphere caused electronic leakage. The operation of PCFCs demonstrated that higher Ce4+ content resulted in higher open-circuit voltage and output power density. However, lower Ce4+ content stabilized the materials in CO2 atmosphere.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Fenglong Zhang, Fei Ruan, Jinxiao Bao, Yang Li, Yuwei Ma, Rui Chen
Summary: The doping of Y2O3 has a significant influence on the electrical conductivity of CaHf1-xYxO3-delta, resulting in an initial increase and subsequent decrease with increasing x. Protons are found to be the main conductive carriers in the three different atmospheres at temperatures between 973 and 1173 K. Positive holes dominate the conductive process in an oxygen-rich atmosphere, while vacancies act as the main conductive carriers in a water vapor-rich atmosphere, within the temperatures range of 1273-1373 K. The chemical diffusion coefficients of CaHf1-xYxO3-delta range from 3.9 x 10(-6) to 2.4 x 10(-5) cm(2)/s at temperatures between 973 and 1373 K. The proton transfer number of CaHf1-xYxO3-delta exceeds 97% in a hydrogen atmosphere from 973 to 1173 K. These findings suggest that CaHf1-xYxO3-delta could serve as an alternative material for hydrogen sensor electrolytes.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Mehrzad Soleimany, M. H. Paydar, Shaorong Wang
Summary: The study found that NiO doping can improve the flash-sintering performance of the BZCY7 compound, reducing the onset temperature and enhancing sinterability. NiO doping leads to larger grain sizes without segregation or second-phase formation. Additionally, the conductivity and activation energy of NiO-doped samples were higher than undoped samples.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Sathish Rajendran, Naresh Kumar Thangavel, Samia Alkatie, Yi Ding, Leela Mohana Reddy Arava
Summary: Tri-doping of barium cerium zirconate with rare earth elements Pr, Gd, and Y was studied to enhance sinterability, chemical stability, and proton conductivity. Varying the concentrations of dopants showed significant effects on the microstructure and conductivity of the electrolyte materials. The tri-doped electrolytes exhibited excellent chemical stability and high proton conductivity values at elevated temperatures.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Yifan Li, Konstantinos Kappis, Joan Papavasiliou, Zhiyong Fu, Li Chen, Haibin Li, Dimitrios E. Vlachos, George Avgouropoulos
Summary: In this study, a fuel cell based on a molten proton conductor electrolyte membrane was developed, which can operate efficiently at high temperatures through integration with a CuZn-based methanol reformer. The experiment showed that the fuel cell could provide a voltage of 0.7 V and maintain a high open circuit voltage at 220℃.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Physical
Zhen Wang, Luyao Ding, Shenglong Yu, Huan Xu, Xiaohui Hao, Yi Sun, Tianmin He
Summary: A comparative study was conducted to investigate the effect of different addition strategies for a sintering aid of ZnO on the performance of the BaZr0.4Ce0.4Y0.2O3-delta electrolyte. The results showed that the internally-doped sample exhibited higher relative density and lower grain boundary core barrier height, leading to higher power density and better ion transport performance.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Materials Science, Ceramics
Ji Li, Shoufu Yu, Lei Bi
Summary: A new BSZF material was proposed as a cathode for proton-conducting SOFCs. The incorporation of Sr into the lattice improved the chemical stability and enhanced the oxygen vacancy content, leading to improved performance of the fuel cell.
CERAMICS INTERNATIONAL
(2022)
Article
Electrochemistry
Kwati Leonard, Yuji Okuyama, Mariya E. Ivanova, Wilhelm A. Meulenberg, Hiroshige Matsumoto
Summary: Acceptor-doped barium zirconate cerate electrolytes have potential applications in highly efficient and environmentally friendly electrochemical devices. By optimizing the ionic conductivity, the Ba(ZrxCe10-x)(0.08)Y0.2O3-delta (1 <= x <= 9) material shows superior conductivity for moderate temperature electrolysis.
Article
Chemistry, Physical
Wenjie Yang, Chao Han, Yuehua Li, Huizhu Zhou, Shan Liu, Ling Wang, Zhangxing He, Lei Dai
Summary: BaHf(0.8)Ln(0.2)O(3-delta) doped with rare earth elements have been studied for their phase composition, sinterability, chemical stability, and conductivity. Among all samples, BaHf0.8Y0.2O3-delta shows the highest relative density and conductivity, making it a promising electrolyte candidate for proton-conducting fuel cells.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Ceramics
Qifei Zhang, Yunting Hou, Li Chen, Lijun Wang, Kuochih Chou
Summary: The study found that adding GDC material in anode-supported H-SOFC can increase oxygen vacancy concentration and three-phase reaction interface to improve oxygen adsorption and dissociation rate at low temperatures, thereby enhancing cell performance and stability.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Hongzheng Li, Ying Li, Wenlong Huang, Yushi Ding
Summary: KNbO3 and KNb0.9M0.1O3-α (M = Ti, Hf, Zr, Sc, In, Yb) were synthesized and characterized for their conductivity. Among them, KNb0.9In0.1O3-α showed the highest conductivity. The conductivity order in different atmospheres was wet air > wet Ar > dry Ar. KNb0.9In0.1O3-α was found to be a nearly pure proton conductor below 625°C. It also exhibited excellent chemical stability against CO2 and H2O, but should be used with caution to avoid rapid heating and cooling.
SOLID STATE IONICS
(2023)
Article
Materials Science, Ceramics
Gaopeng Zhou, Ying Li, Yadan Luo, Wenlong Huang, Bo Li
Summary: This study investigates the substitution effect of different Ca2+ concentrations at A-sites in perovskites and its impact on the electrical properties and chemical stability. The results show that increasing Ca2+ concentration improves the chemical stability but reduces the conductivity of the materials.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Fei Ruan, Ruming Wu, Yang Li, Jinxiao Bao, Jianquan Gao, Fen Zhou, Min Xie, Pengfei Xu, Xiwen Song
Summary: In this study, a solid-state electrolyte Er-doped CaZrO3 was successfully prepared and its microstructures and electrochemical properties were investigated. Protons were identified as the predominant charge carriers in a hydrogen atmosphere at high temperatures, while the ionic electrical conductivity decreased with increasing Er2O3 doping.
Article
Chemistry, Physical
Dongyeon Kim, Kyung Taek Bae, Kyeong Joon Kim, Ha-Ni Im, Seungsoo Jang, Seeun Oh, Sang Won Lee, Tae Ho Shin, Kang Taek Lee
Summary: Protonic ceramic electrochemical cells (PCECs) have been attracting attention due to their ability to convert chemical fuels into electricity at low temperatures. However, conventional sintering conditions often result in nonstoichiometric electrolytes and electrode coarsening, leading to performance degradation. In this study, PCECs were fabricated through a microwave-assisted sintering process, which effectively suppressed undesirable diffusion and growth, thus producing PCECs with stoichiometric electrolytes and nanostructured fuel electrodes. The resulting PCECs demonstrated higher electrochemical performance compared to conventionally sintered PCECs, highlighting the effectiveness of the ultrafast sintering technique.
ACS ENERGY LETTERS
(2022)
Review
Materials Science, Multidisciplinary
Hainan Sun, Xiaomin Xu, Hyunseung Kim, WooChul Jung, Wei Zhou, Zongping Shao
Summary: Electrochemical water splitting is a promising technology for producing green hydrogen, but research on a larger scale, especially on an industrial level, is lacking. This review focuses on bridging the gap between fundamental research and industrial applications in water electrolysis. It discusses the fundamental principles of electrochemical water splitting, compares testing protocols, catalysts, and costs between laboratory and industry-based research, and highlights the differences in electrochemical reconstruction mechanisms. Advances in catalyst designs for industry-relevant water electrolysis are summarized, and challenges in electrocatalyst design strategies are proposed to further promote large-scale applications.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Chencheng Cao, Yijun Zhong, Zongping Shao
Summary: Despite being widely used, the safety issue of lithium-ion batteries (LIBs) is a major barrier for their application in EVs or large-scale energy storage. This study summarizes the mechanisms of thermal runaway and recent progress in electrolyte engineering for LIBs, including adding flame-retardants, using ionic liquid electrolytes, and solid electrolytes. It also discusses the strengths, weaknesses, and new directions for designing safer electrolytes.
CHINESE JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Chuan Zhou, Dongliang Liu, Meijuan Fei, Xixi Wang, Ran Ran, Meigui Xu, Wei Wang, Wei Zhou, Ryan O'Hayre, Zongping Shao
Summary: In this study, the balance between hydration reaction and oxygen reduction reaction (ORR) over protonic ceramic fuel cells (PCFCs) cathode is optimized by controlling the air flow rate. Different cathode materials show different optimal performance under various operating conditions. The study provides important insights into the environmental demands of PCFC cathodes during operation and offers useful guidance for further performance optimization.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Multidisciplinary
Huimin Xiang, Jingsheng He, Ran Ran, Wei Zhou, Wei Wang, Zongping Shao
Summary: Over the past 10 years, halide perovskite solar cells (PSCs) have gained increasing interest due to their easy fabrication, cost-effective raw materials, and high power conversion efficiencies (PCEs). However, the current organic-inorganic PSCs suffer from high defect concentration and poor humid/thermal stability, limiting their widespread applications. To address these issues, we introduced iodide/triiodide (I-/I-3(-)) redox shuttles as additives to simultaneously passivate the cation and anion defects of methylammonium lead iodide (MAPbI(3))-based PSCs. This approach resulted in significantly improved PCEs and durability of the PSCs.
Article
Chemistry, Multidisciplinary
Zhenyu Sun, Yi Ding, Cuie Wang, Peng Mao, Beibei Wang, Ran Ran, Wei Zhou, Kaiming Liao, Zongping Shao
Summary: This study proposes a simple, scalable, and inexpensive electrode engineering and recycling strategy for rechargeable zinc-air batteries (ZABs) based on magnetic binder engineering of cobalt-implanted electrocatalysts. By manipulating the electrode with magnets, the ZAB can cycle for 1200 hours, and its anti-pulverization behavior is revealed through in situ observation. The cobalt-implanted electrocatalysts can also be recycled from spent ZABs using a magnetic force-separation method, and the recycled electrocatalysts exhibit considerably prolonged cycling stability for over 500 hours. These findings not only enhance battery performance but also provide sustainable solutions for recycling electrocatalysts for various applications beyond ZABs.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Environmental
Hailong Liao, Heping Xie, Shuo Zhai, Ling Fu, Yuan Zhang, Senran Hao, Bin Chen, Chuanxin He, Zongping Shao
Summary: Efficient and cost-effective CO2RR perovskite catalyst was developed by partially substituting Fe to the B site of precious metal-free La0.5Sr0.5MnO3 (LSM) perovskite. The Fe-doped catalyst showed improved electrochemical performance, Faraday efficiency, battery durability, and battery power density, making it a promising CO2RR electrocatalyst for Zn-CO2 batteries.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Engineering, Environmental
Liangshuang Fei, Hainan Sun, Xiaomin Xu, Yu Li, Ran Ran, Wei Zhou, Zongping Shao
Summary: Significant progress has been made in the discovery of bifunctional electrocatalysts for energy storage and conversion systems, particularly for the oxygen evolution reaction (OER) and urea oxidation reaction (UOR). Various materials engineering strategies have been developed to improve the catalytic performance, but the mechanisms of reported bifunctional catalysts vary depending on the types of materials. This review provides a comprehensive overview of the latest developments and understanding of bifunctional electrocatalysts for OER/UOR, and discusses future research directions to achieve sustainable energy and environmental goals.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Physical
Nikolai A. Danilov, Inna A. Starostina, George N. Starostin, Anna V. Kasyanova, Dmitry A. Medvedev, Zongping Shao
Summary: Proton-conducting oxide materials have protonic defects in their crystal structure due to their interaction with hydrogen-containing atmospheres, resulting in superior ionic conductivity. Barium cerate, barium zirconate, and barium cerate-zirconate are widely studied as proton-conducting electrolyte materials. Y and Yb co-doped Ba(Ce,Zr)O-3 is considered one of the most promising systems.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Yasir Arafat, Yijun Zhong, Muhammad R. Azhar, Mohammad Asif, Moses O. Tade, Zongping Shao
Summary: A nanocomposite based on ternary CoNiFe-layered double hydroxides (LDH) and cobalt coordinated and N-doped porous carbon (Co-N-C) network was developed for high catalytic activity towards oxygen evolution/reduction reactions in rechargeable zinc-air batteries. The unique architecture of the nanocomposite provided rich active sites and enhanced electronic and mass transport properties, leading to outstanding bi-functional catalytic activity. In ZABs, it exhibited a high peak power density of 228 mW cm(-2) and a low voltage gap of 0.77 V over an ultra-long lifespan of 950 h.
Article
Nanoscience & Nanotechnology
Jiayi Tang, Yijun Zhong, Chao Su, Zongping Shao
Summary: In this study, the greatly boosted performance of conventional sub-micrometer RuO2 by compositing with Ag is reported, and both the morphology of Ag and the compositing way significantly affect the electrolysis performance. The PEMWE fabricated with a two-layer RuO2/Ag nanowire composite anode achieves 1.77 A cm(-2) at 2.00 V due to a prominent increase of the electronic conductivity and improved catalyst utilization. The composite anode also shows long-term stability under high current density, making it a promising alternative for green hydrogen production.
Review
Chemistry, Multidisciplinary
Yakun Wang, Yeqing Ling, Bin Wang, Guowei Zhai, Guangming Yang, Zongping Shao, Rui Xiao, Tao Li
Summary: This paper provides a general review of the mechanisms, operating principles, and performance improvement strategies of proton ceramic electrochemical cells (PCECs). It also presents various applications of PCECs, such as H2O electrolysis, CO2 electrolysis, and synthesis of high-value chemicals. The future commercialization of PCECs and the existing challenges are discussed.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Physical
Lichang Ji, Yun Zhao, Lijuan Cao, Yong Li, Canliang Ma, Xingguo Qi, Zongping Shao
Summary: This study provides an in-depth analysis of the synthesis processes of coal tar pitches for fabricating hard carbon anodes in sodium-ion batteries. The different characteristics of the coal tar pitches have significant effects on the resulting carbon materials and their sodium storage behaviors.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Gongxu Lan, Huilin Fan, Yuan Wang, Hamidreza Arandiyan, Suresh K. Bhargava, Zongping Shao, Hongyu Sun, Yanguo Liu
Summary: The surface atomic arrangement and defective structures of electrocatalysts play a crucial role in determining their catalytic activity and selectivity. In this study, alpha-Fe2O3 nanosheets with surface oxygen vacancies were synthesized and their oxygen vacancy concentration was varied to study their oxygen reduction reaction (ORR) performance. The results showed that increasing the oxygen vacancy concentration improved the ORR activity up to a certain point, but further increase deteriorated the crystalline quality and affected the performance.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Shuai Liu, Meiting Yang, Ruijia Xu, Xinghe Xiang, Guangming Yang, Haoran Xu, Gang Xiao, Ran Ran, Wei Zhou, Zongping Shao
Summary: Efficiently converting CO2 into value-added fuels or chemicals is a significant target for reducing CO2 emissions and achieving carbon neutrality. Solid oxide electrolysis cells (SOECs) are devices where the CO2 reduction reaction (CO2RR) takes place with high efficiency and fast kinetics, and it is crucial to develop innovative cathode materials with high activity and good durability.
Article
Chemistry, Physical
Zehao Zheng, Cuie Wang, Peng Mao, Yijun Zhu, Ran Ran, Wei Zhou, Kaiming Liao, Zongping Shao
Summary: A cost-effective bifunctional oxygen electrocatalyst with a self-antistacking structure was fabricated, enhancing the activity of the oxygen reduction and oxygen evolution reactions in Zn-air batteries. The novel architecture showed excellent capacity and long-term cyclability.
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)
