Article
Materials Science, Ceramics
Shenglong Yu, Zhen Wang, Lei Yang, Jincheng Liu, Rui Guan, Youcheng Xiao, Tianmin He
Summary: By adding 10 wt.% LSGM, the BL91 composite electrolyte showed superior sintered density and conductivity compared to the BZCY electrolyte, making it a promising candidate for proton-conducting electrolytes.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
In -Ho Kim, Dae-Kwang Lim, Yeon Namgung, Hohan Bae, Jun-Young Park, Sun-Ju Song
Summary: In this study, the electrochemical and transport properties of a perovskite-type proton conductor BZCYYb5311 were evaluated. The material showed high proton conductivity and exceptional chemical stability. It exhibited a proton conductivity of 98% compared to ionic conductivity at 600°C. The maximum power density in fuel cell mode and current density in electrolysis mode were calculated, indicating the potential of BZCYYb5311 as a fuel cell material.
Review
Chemistry, Physical
Idris Temitope Bello, Shuo Zhai, Siyuan Zhao, Zheng Li, Na Yu, Meng Ni
Summary: Proton-conducting solid oxide fuel cells (P-SOFCs) show great potential for energy conversion with high efficiency and temperature adaptability, but research and development in this field are still limited globally.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Multidisciplinary
Yufeng Li, Shoufu Yu, Hailu Dai, Yangsen Xu, Lei Bi
Summary: In this study, Sr-doped LaMnO3 (LSM) is coated with TiO2 to create the LSM + TiO2 cathode. It is found that TiO2 modifies the electronic structure at the LSM/TiO2 interface, allowing for charge accumulation and enhanced oxygen diffusion ability. Using LSM + TiO2 as a cathode for proton-conducting SOFCs operating at intermediate temperatures, the fuel cell demonstrates enhanced cell output performance and achieves the highest reported value for H-SOFCs with LSM cathodes.
SCIENCE CHINA-MATERIALS
(2023)
Article
Chemistry, Physical
Xing Chen, Huilin Zhang, Yongyong Li, Jiezhen Xing, Ze Zhang, Xiao Ding, Bo Zhang, Juan Zhou, Shaorong Wang
Summary: The study successfully obtained an 80 mm x 80 mm anode-supported proton-conducting solid oxide fuel cell through combining multi-layer aqueous-based tape casting and co-sintering technology. The cell with a homogeneous microstructure achieved a performance of 389 mW cm(-2) at 800 degrees C using 3% humidified hydrogen as fuel and normal air as oxidant, providing theoretical and statistical accumulation and reference for future assembly of large-scale PCFCs.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Yan Cao, Hayder A. Dhahad, Yu-Liang Sun, Maghsoud Abdollahi Haghghi, Mostafa Delpisheh, Hassan Athari, Naeim Farouk
Summary: This study investigates the impact of changes in nitrogen ratio on the performance of fuel cells, finding that with increasing input nitrogen ratio, the voltage output, energy and exergy efficiencies, electricity generation rate, and exergoeconomic factor of the applications decrease, while the unit cost of electricity and carbon dioxide emission increase.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Thermodynamics
Libin Lei, Yingyu Mo, Yue Huang, Ruiming Qiu, Zhipeng Tian, Junyao Wang, Jianping Liu, Ying Chen, Jihao Zhang, Zetian Tao, Bo Liang, Chao Wang
Summary: Proton-conducting solid oxide fuel cells (H-SOFCs) are highly efficient energy devices that operate at intermediate temperatures due to their high ionic conductivities. However, the role of oxygen-ionic current (jO) in proton-conducting electrolytes has been overlooked. This study presents a theoretical analysis, considering various factors, to evaluate jO in H-SOFCs. The modeling results demonstrate that jO is mainly influenced by fuel humidity, and reducing it can improve the power density of H-SOFCs.
Article
Chemistry, Physical
Shuai Wu, Yinhua Liu, Chao Wang, Hailu Dai, Xianfen Wang, Lei Bi
Summary: The performance of LaNi0.5Fe0.5O3-delta material for H-SOFCs has been improved through a Zn-doping strategy, resulting in higher peak power density and lower polarization resistance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Ceramics
Yanru Yin, Yanbin Zhou, Yueyuan Gu, Lei Bi
Summary: In this study, a pure phase BaCo0.5Fe0.5O3-delta (BCF) was successfully prepared for the first time using a calcination method with rapid cooling. The BCF material was evaluated as a cathode for proton-conducting solid oxide fuel cells (H-SOFCs), and it achieved a fuel cell performance of 2012 mW.cm(-2) at 700 degrees C, which is double that of a similar cell using the classical Ba0.5Sr0.5Co0.8Fe0.2O3-delta (BSCF) cathode. The improved performance of the BCF cathode was attributed to the lower energy barriers in the oxygen reduction reaction (ORR) compared to the BSCF cathode. The fuel cell using the BCF cathode also exhibited excellent long-term stability, working stably for nearly 900 hours without noticeable degradation. This research suggests that BCF is a promising cathode material for H-SOFCs.
JOURNAL OF ADVANCED CERAMICS
(2023)
Article
Materials Science, Ceramics
Donggang Wang, Zhenhao Zhang, Tao Song, Haibin Sun, Jiao Li, Xue Guo, Qiangqiang Hu, Yurun Feng, Shikai Zhao
Summary: A modified aqueous gel-casting method was used to synthesize high sintering active and high conductive BZCY nano-powders, resulting in improved sinterability and electrical conductivity. The approach allowed for the easy obtainment of pure perovskite structure, and the nano-powders reduced the sintering densification temperature. The BZCY electrolyte prepared showed a relative density > 96% and an average grain size of 2.36μm, leading to improved electrical conductivities.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Xuan Yang, Xi Xu, Shuai Wu, Shoufu Yu, Lei Bi
Summary: Zn-doping can enhance the hydration and proton diffusion ability of La2NiO4+x, making it a suitable cathode material for proton-conducting solid oxide fuel cells (H-SOFCs).
CERAMICS INTERNATIONAL
(2022)
Article
Thermodynamics
Jaroslaw Milewski, Arkadiusz Szczesniak
Summary: This research aims to investigate the off-design performance of H+SOFC through numerical simulations. The study focuses on the design point and off-design maps of the cell, providing useful results for selecting operational strategies for micro-CHP units based on H+SOFC.
APPLIED THERMAL ENGINEERING
(2022)
Article
Chemistry, Physical
Zhizhong Leng, Zuzhi Huang, Xu Zhou, Bo Zhang, Hu Bai, Juan Zhou, Shaorong Wang
Summary: Proton-conducting solid oxide electrolysis cells (H-SOECs) using BZCYYb as the electrolyte material have unique advantages. This study investigates the effects of adding different sintering aids (NiO, CuO, ZnO) to BZCYYb on grain size and conductivity. The results show that adding 1 wt% of NiO and CuO sintering aids improves the density and conductivity of BZCYYb. The conductivity increases with steam concentration in most atmospheres, while in oxygen atmosphere with steam at high temperature, the conductivity initially decreases slightly and then increases. CuO is found to have advantages in promoting hydration reaction and proton conduction of BZCYYb electrolyte compared to NiO.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Materials Science, Ceramics
Feng Chen, Dongliang Liao, Xian Pan, Gurong Lin, Kaiping Peng
Summary: This study synthesized In-doped LSZG powders using sol-gel method and investigated the effects of In doping on LSZG. The results showed that In doping can enhance the sintering activity and ion exchange rate of LSZG. At the optimum doping concentration of x = 0.2, 0.2LISZG exhibited high proton conductivity.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Rui Zhou, Yanru Yin, Hailu Dai, Xuan Yang, Yueyuan Gu, Lei Bi
Summary: A La0.5Ba0.5MnO3-δ oxide was prepared using sol-gel technique, and it was found to be a combination of La0.7Ba0.3MnO3-δ and BaMnO3. The in-situ production of La0.7Ba0.3MnO3-δ+BaMnO3 nanocomposites improved the oxygen vacancy formation, making it a potential cathode for fuel cells. Utilizing La0.7Ba0.3MnO3-δ+BaMnO3 nanocomposites as the cathode for proton-conducting solid oxide fuel cells significantly enhanced cell performance.
JOURNAL OF ADVANCED CERAMICS
(2023)
Article
Nanoscience & Nanotechnology
Qinong Shao, Chenhui Yan, Mingxi Gao, Wubin Du, Jian Chen, Yaxiong Yang, Jiantuo Gan, Zhijun Wu, Wenping Sun, Yinzhu Jiang, Yongfeng Liu, Mingxia Gao, Hongge Pan
Summary: This study investigates the effects of Zr doping on the ionic conductivity and electrochemical stability window of Li3-xEr1-xZrxCl6 halide solid electrolytes. The results show that Zr doping can increase the ionic conductivity but narrows the electrochemical stability window. Furthermore, carbon additives are beneficial for achieving high discharge capacity, better cycling stability, and rate performance in halide-based all-solid-state lithium-ion batteries.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Chemistry, Multidisciplinary
Liaona She, Guoqiang Zhao, Tianyi Ma, Jian Chen, Wenping Sun, Hongge Pan
Summary: This review summarizes the recent research progress on tackling the stability issues of Ir-based OER electrocatalysts in acid media, aiming to provide inspiration for designing highly active and stable Ir-based electrocatalysts.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Zhenglong Li, Shun Wang, Mingxia Gao, Kaicheng Xian, Yi Shen, Yaxiong Yang, Panyu Gao, Wenping Sun, Yongfeng Liu, Hongge Pan
Summary: By introducing Li3BO3 and V as catalysts, the dehydrogenation temperature of LiBH4 can be lowered and the reversibility can be improved, thus enhancing the hydrogen storage performance.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Xiaobo Zheng, Yaping Chen, Weihong Lai, Peng Li, Chenliang Ye, Nana Liu, Shi Xue Dou, Hongge Pan, Wenping Sun
Summary: This study presents a facile and universal strategy for the synthesis of defect-abundant 2D materials with unique electronic structures using mechanical shear-assisted exfoliation. The fabricated defect-rich LiCoO2 nanosheets exhibit accelerated oxygen evolution kinetics and reduced energy barrier. Importantly, this method can be applied to the fabrication of other ultrathin defect-rich 2D materials.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Bingxing Zhang, Yaping Chen, Jianmei Wang, Hongge Pan, Wenping Sun
Summary: Single-atom catalysts have gained attention in electrocatalysis for their exceptional activity, selectivity, and atom utilization. However, their limited metal-support interactions hinder their applications in complex reactions. Supported sub-nanometer cluster catalysts with nearly fully exposed active atoms may outperform single-atom catalysts in specific catalytic reactions. This review summarizes recent advances in supported sub-nanometer cluster catalysts in electrocatalysis and highlights the importance of support-cluster interactions and ensemble effects.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Jiufeng Ruan, Yaping Chen, Guoqiang Zhao, Peng Li, Bingxing Zhang, Yinzhu Jiang, Tianyi Ma, Hongge Pan, Shi Xue Dou, Wenping Sun
Summary: Cobalt single atoms are introduced to enhance the electrocatalytic performance of N-doped carbon supported Pt for methanol oxidation reaction. The Co-N-C/Pt electrocatalyst exhibits impressive electrocatalytic activity, superior CO poisoning resistance, and durability.
Article
Chemistry, Physical
Yaping Chen, Xusheng Zheng, Jinyan Cai, Guoqiang Zhao, Bingxing Zhang, Zhouxin Luo, Gongming Wang, Hongge Pan, Wenping Sun
Summary: This study demonstrates the importance of tailoring the interfacial interaction between metal species and supports in supported electrocatalysts. By engineering a highly active interface in S-doped graphitic carbon nitride (SGCN)-supported Pt heterostructured electrocatalysts, enhanced oxygen reduction reaction (ORR) performance is achieved. The coordination and electronic structure of Pt species are modulated by S doping, resulting in strengthened Pt-N bonding and reinforcement of the metal-support interaction. The optimized 20Pt/SGCN-550 electrocatalyst exhibits excellent ORR performance and decent durability. This work not only advances the development of robust ORR electrocatalysts, but also provides a strategy for engineering heterostructured electrocatalysts with tunable interface chemistry for various catalytic applications.
Article
Multidisciplinary Sciences
Bingxing Zhang, Baohua Zhang, Guoqiang Zhao, Jianmei Wang, Danqing Liu, Yaping Chen, Lixue Xia, Mingxia Gao, Yongfeng Liu, Wenping Sun, Hongge Pan
Summary: Overcoming the sluggish kinetics of alkaline hydrogen oxidation reaction (HOR) is challenging but is of critical importance for practical anion exchange membrane fuel cells. Here, the authors report atomically dispersed chromium coordinated with hydroxyl clusters on ruthenium nanoparticles for accelerated hydrogen oxidation reaction.
NATURE COMMUNICATIONS
(2022)
Review
Chemistry, Multidisciplinary
Jianmei Wang, Bingxing Zhang, Wei Guo, Lei Wang, Jian Chen, Hongge Pan, Wenping Sun
Summary: The study of direct methanol fuel cells (DMFCs) has been ongoing for around 70 years, but commercialization is still a distant goal. The methanol oxidation reaction (MOR) is the bottleneck reaction that limits the overall performance of DMFCs. This review summarizes the controversies and progress in electrocatalytic mechanisms, performance evaluations, and design science for MOR electrocatalysts. It also provides an overview of the recent development of emerging MOR electrocatalysts, focusing on the innovation of alloy, core-shell structure, heterostructure, and single-atom catalysts. Perspectives on future research directions are also discussed.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Dan-Qing Liu, Zhouxin Luo, Bingxing Zhang, Guoqiang Zhao, Wei Guo, Jian Chen, Mingxia Gao, Yongfeng Liu, Hongge Pan, Wenping Sun
Summary: In this study, epitaxial growth of Ir nanoclusters on a MoS2 surface was reported, and the activity of alkaline hydrogen oxidation reaction was optimized by tailoring interfacial charge transfer and hydrogen binding energy between Ir clusters and MoS2. The results show that Ir/MoS2 exhibits better performance compared to carbon-supported Ir nanoclusters.
ADVANCED ENERGY MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Lingchao Zhang, Xin Zhang, Wenxuan Zhang, Zhenguo Huang, Fang Fang, Juan Li, Limei Yang, Changdong Gu, Wenping Sun, Mingxia Gao, Hongge Pan, Yongfeng Liu
Summary: High thermal stability and sluggish absorption/desorption kinetics are limitations for using MgH2 as a hydrogen storage medium. Introducing a suitable catalyst, such as the novel nanoparticulate ZrNi, can significantly improve the hydrogen storage properties. The catalytic reaction of nano-ZrNi during the first de-/hydrogenation cycle forms active species that enhance the breaking and rebonding of H-H bonds and provide multiple hydrogen diffusion channels, leading to remarkably improved hydrogen absorption and desorption capabilities.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Xin Zhang, Xuelian Zhang, Lingchao Zhang, Zhenguo Huang, Limei Yang, Mingxia Gao, Changdong Gu, Wenping Sun, Hongge Pan, Yongfeng Liu
Summary: High operating temperatures and sluggish kinetics are obstacles for the practical application of MgH2 as a solid hydrogen carrier. This study investigates the catalytic activity of nanostructured niobium oxide (Nb2O5) and explores the relationship between nanoparticle size, morphology, and catalytic activity. The results demonstrate that the primary particle size is the decisive factor in the catalytic activity of Nb2O5, enabling dehydrogenation at low temperatures and higher reactivity due to the formation of more uniform and finer Nb-based active species when ball-milled with MgH2.
ACS APPLIED NANO MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Yaxiong Yang, Peng Li, Xiaobo Zheng, Wenping Sun, Shi Xue Dou, Tianyi Ma, Hongge Pan
Summary: This review provides a comprehensive overview of the fundamentals, technological progress, and future perspectives on AEMWEs and AEMFCs. It analyzes the market development status, key components, working management, and operation monitoring of these technologies, and identifies aspects that need further research.
CHEMICAL SOCIETY REVIEWS
(2022)
Review
Chemistry, Multidisciplinary
Xiaoyu (Baohua) Zhang, Xuezhang Xiao, Jian Chen, Yongfeng Liu, Hongge Pan, Wenping Sun, Mingxia Gao
Summary: In this review, recent advances in Ru-based electrocatalysts for alkaline hydrogen oxidation reaction (HOR) are summarized and the fundamental reaction mechanisms of the electrocatalytic HOR under alkaline conditions are discussed. The recent progress in Ru-based electrocatalysts is summarized based on four catalyst-design strategies including composition, support, size, and structure effects. Furthermore, the challenges and opportunities for developing advanced Ru-based HOR electrocatalysts are highlighted.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Jingj Xiang, Minghe Luo, Xingxing Wu, Yaofeng Zhu, Xuan Zhang, Hongge Pan, Wenping Sun, Mi Yan, Yingying Lu, Yinzhu Jiang
Summary: This study investigates the impact of various Zn2+ coordinated configurations on Zn anode reversibility using ethylenediamine as a complexing agent. The results show that both symmetric Zn/Zn cells and Zn/NiHCF full cells exhibit significantly improved cycling stability under specific coordinated configurations.
CHEMICAL COMMUNICATIONS
(2022)
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)
