Article
Chemistry, Physical
Jiehai Peng, Yuan Yuan, Wuhua Yuan, Kun Peng
Summary: In this study, urchin-like Co3O4 microspheres were synthesized and oxygen vacancies and phosphorus doping were introduced to adjust the electronic structure, increasing catalytic activity, improving adsorption energy of intermediates, and activating more active sites for the catalytic reaction. Additionally, Co3O4-Ov and Co3O4-P catalysts demonstrated excellent performance in OER and HER, with an electrolytic cell only needing 1.58 V to achieve 20 mA cm-2 for overall water splitting.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Chenfei Zhao, Jing Wang, Ya Gao, Jing Zhang, Chengyu Huang, Qinhao Shi, Shichun Mu, Qunfeng Xiao, Shengjuan Huo, Zhonghong Xia, Jiujun Zhang, Xionggang Lu, Yufeng Zhao
Summary: This study presents a novel electrocatalyst, Ru@CrFeMOF, with an extremely low amount of Ru nanoclusters anchored on Cr-doped Fe-metal-organic frameworks. The as-prepared catalyst exhibits excellent performance for both oxygen and hydrogen evolution reactions, surpassing the state-of-the-art literatures at industrial-level current densities.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Physical
Yi Tang, Chenhui Yang, Xingtao Xu, Yunqing Kang, Joel Henzie, Wenxiu Que, Yusuke Yamauchi
Summary: This review systematically summarizes the strategies involved in defect engineering in MXenes-based catalysts and provides insights into the mechanisms that govern the catalytic activity of defects. Current challenges and future opportunities in this field are also discussed.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Mingqi Sun, Shuai Zhang, Yaru Li, Chen Yang, Ying Guo, Lan Yang, Sailong Xu
Summary: Introducing low-content CeOx into Ni3Fe nanoparticle-encapsulated carbon nanotubes enhances the electrocatalytic performance for both the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), enabling overall water splitting. The composite material exhibits low overpotentials of 195 and 125 mV at 10 mA cm(-2) in 1.0 M KOH, outperforming Ni3Fe@CNTs/NF (313 and 139 mV) and CeOx/NF (345 and 129 mV). Moreover, the composite-assembled electrolyzer achieves a current density of 10 mA cm(-2) at a cell voltage of 1.641 V, enabling efficient water splitting.
DALTON TRANSACTIONS
(2023)
Review
Chemistry, Inorganic & Nuclear
Lan Sun, Qiaomei Luo, Zhengfei Dai, Fei Ma
Summary: Water electrolysis is crucial for hydrogen generation, requiring efficient electrocatalysts; Recent advancements include strategies like nanoarchitecturing and heteroatomic doping to enhance electrocatalyst performance; Challenges and opportunities lie ahead for improving water splitting performance.
COORDINATION CHEMISTRY REVIEWS
(2021)
Review
Chemistry, Physical
Ye Zeng, Mengting Zhao, Zihao Huang, Weijie Zhu, Jiaxian Zheng, Qiu Jiang, Zhoucheng Wang, Hanfeng Liang
Summary: This article reviews recent progress in regulation strategies for reconstruction reactions in water electrolysis, including the mechanism of water electrolysis, critical factors of the reconstruction process, advanced characterization methods, and modulation strategies. The article highlights the effectiveness of regulating the reconstruction process to enhance catalytic performance of electrocatalysts, and discusses future challenges in surface-reconstructed catalysts for water electrolysis.
ADVANCED ENERGY MATERIALS
(2022)
Review
Chemistry, Inorganic & Nuclear
Zhenxing Li, Mingliang Hu, Ping Wang, Jiahao Liu, Jiasai Yao, Chenyu Li
Summary: The article summarizes the design strategies and synthesis methods of various heterojunction catalysts, as well as their applications in the water splitting process. By briefly discussing the current progress in electrocatalytic water splitting, it provides a prospect for the future of heterojunction catalysts in this field.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Chemistry, Multidisciplinary
Xin Ding, Run Jiang, Jialin Wu, Minghui Xing, Zelong Qiao, Xiaofei Zeng, Shitao Wang, Dapeng Cao
Summary: This study successfully synthesized the heterostructure of nickel nitride and ceria on nickel foam, showing excellent hydrogen evolution and oxygen evolution performance. Ceria plays different roles in the hydrogen evolution and oxygen evolution processes. The study reveals the different catalytic mechanisms of ceria in boosting the hydrogen evolution and oxygen evolution activities of nickel nitride, providing useful guidance for designing high-performance bifunctional catalysts.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Yiyue Zhai, Xiangrong Ren, Bolun Wang, Shengzhong (Frank) Liu
Summary: This article provides a comprehensive overview of the research progress in using HEM catalysts for electrochemical water splitting. The article introduces the concept, structure, and design strategies of HEMs, and highlights the importance of computationally aided methods in HEM research. Additionally, the article reviews the applications of HEMs in the field of water electrolysis and provides an outlook on the future prospects of HEMs.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Mengmeng Jin, Jiewei Li, Jingchang Gao, Weilan Liu, Jing Han, Haimin Liu, Da Zhan, Linfei Lai
Summary: In this study, the oxygen evolution reaction (OER) activity of cobalt hydroxide carbonate (CCH) was enhanced by atomic doping of W6+ (W-CCH), reducing the overpotential and increasing the current density. Additionally, the electrolyzer based on 5%W-CCH only required a potential of 1.65 V to achieve 10 mA cm(-2) in full water splitting.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Review
Chemistry, Physical
Longcheng Zhang, Haitao Zhao, Siran Xu, Qian Liu, Tingshuai Li, Yonglan Luo, Shuyan Gao, Xifeng Shi, Abdullah M. Asiri, Xuping Sun
Summary: This review discusses recent progress in electrocatalytic water splitting using advanced electrospun nanomaterials, covering fundamentals, structure design, and electrocatalytic properties. The review highlights the importance of designing 1D nanocatalysts with large surface area, high electronic conductivity, and tunable composition to improve the efficiency of electrochemical water splitting. The future perspectives and challenges in designing next-generation 1D electrospun nanocatalysts for electrochemical water splitting are also outlined.
Review
Electrochemistry
Yasemin Aykut, Ayse Bayrakceken Yurtcan
Summary: Hydrogen energy has gained momentum worldwide, but faces challenges in its applicability in different fields, including sustainable hydrogen production and efficient catalysts. This review focuses on electrocatalysts developed for the low-temperature electrocatalytic water splitting method, summarizing catalyst parameters, nanostructures, challenges, and prospects.
ELECTROCHIMICA ACTA
(2023)
Article
Engineering, Environmental
Yue Wang, Pengfei Yang, Yuecheng Gong, Dongzheng Liu, Silu Liu, Weiping Xiao, Zhenyu Xiao, Zhenjiang Li, Zexing Wu, Lei Wang
Summary: The development of highly efficient and low-cost electrocatalysts for hydrogen/oxygen evolution reactions is crucial for their large-scale practical applications. The use of corrosive engineering and low-temperature phosphorization approach enables the preparation of Mo-doped NiFeP on nickel-iron foam with amorphous morphology, porous structure, and superhydrophilic surface, providing abundant active sites and facilitating charge transfer. The prepared Mo-NiFeP/NIF exhibits excellent electrocatalytic performance for OER and HER with low overpotentials and remarkable stability under large current density.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Chun-Lung Huang, Kotaro Sasaki, Duraisamy Senthil Raja, Cheng-Ting Hsieh, Yen-Ju Wu, Jing-Ting Su, Chih-Chieh Cheng, Po-Yin Cheng, Shin-Hong Lin, YongMan Choi, Shih-Yuan Lu
Summary: Twin boundaries significantly enhance the performance of copper-based catalysts, reducing overpotentials for electrolytic water splitting and improving stability. The formation of active (CuO2-)-O-III at low overpotentials enhances the efficiency of the oxygen evolution reaction, while geometric and electronic effects induced by the twin boundaries lead to a remarkable improvement in hydrogen evolution reaction activity.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Shi Chen, Wenjing Liang, Xinyi Wang, Yueqi Zhao, Shuo Wang, Zheng Li, Shengmei Wang, Li Hou, Yang Jiang, Faming Gao
Summary: In this paper, carbon skeleton supported CoNi bimetallic sulfides catalysts modified with phosphorus doping were successfully synthesized. The catalyst exhibits low overpotential in hydrogen evolution reaction and oxygen evolution reaction, and shows remarkable performance and good stability in overall water splitting.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Yunhong Wei, Boya Wang, Yin Zhang, Mi Zhang, Qian Wang, Yun Zhang, Hao Wu
Summary: In this study, a conductive composite architecture consisting of bio-derived N-doped porous carbon fiber bundles with embedded cobalt and niobium carbide nanoparticles was used to address the challenges in Li-S batteries. It was found that the niobium carbide nanoparticles could regulate the lithium and sulfur electrochemistry simultaneously, resulting in excellent rate performance and cycling life of the assembled Li-S batteries.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Boya Wang, Yunhong Wei, Haoyu Fang, Xiaoling Qiu, Qiaobao Zhang, Hao Wu, Qian Wang, Yun Zhang, Xiaobo Ji
Summary: By engineering a novel multidimensional integrated architecture consisting of Mn-substituted PAA nanocrystals embedded in tubular graphene scrolls and co-assembled with N-doped graphene sheets, the challenges in electronic conductivity and structural stability of PAA-based electrodes are addressed. This 3D electrode framework provides omnidirectional electron/ion transport network, enabling ultrahigh rate capacity, superfast-charging capability, and durable cycling performance.
Article
Nanoscience & Nanotechnology
Yin Zhang, Menglei Wang, Yi Guo, Lingzhi Huang, Boya Wang, Yunhong Wei, Peng Jing, Yueying Zhang, Yun Zhang, Qian Wang, Jingyu Sun, Hao Wu
Summary: The study proposes the use of Nicandra physaloides pectin as an effective polysulfide/polyselenide captor to address the shuttling issues in Li-SeS2 batteries. Validated by operando spectroscopy analysis, this method enhances the trapping efficiency and conversion efficiency, providing ultra-high rate capability, durable cycling lifespan, and high areal capacity for Li-SeS2 cells. Pouch cells assembled with this interlayer exhibit excellent flexibility, decent rate capability, and stable cycling life, promising a low-cost, viable design protocol for practical Li-SeS2 batteries.
NANO-MICRO LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Yunhong Wei, Mi Zhang, Li Yuan, Boya Wang, Hongmei Wang, Qian Wang, Yun Zhang, Junling Guo, Hao Wu
Summary: This study presents a novel multichambered carbon nanofiber host architecture with an in-built TiN/TiO2 heterostructure that does not require additional nitrogen sources. The architecture effectively immobilizes, diffuses, and transforms polysulfides, leading to excellent battery cycling performance and high energy density.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Physical
Boya Wang, Haoyu Fang, Yunhong Wei, Yun Zhang, Qian Wang, Hao Wu
Summary: By encapsulating oxygen-deficient zinc antimonate in graphene nanoscrolls, its conductivity is improved and cycling stability is enhanced, showing the potential application as a high-performance anode material for lithium-ion batteries.
Article
Nanoscience & Nanotechnology
Yuchen Wang, Yiran Pu, Li Yuan, Yun Zhang, Can Liu, Qian Wang, Hao Wu
Summary: A composite made of a bimetallic compound embedded in nitrogen-doped carbon nanofibers is synthesized by using biomass collagen fibers as a structure template. The composite exhibits excellent electrochemical performance and catalytic activity, making it suitable for separator modification and sulfur host in lithium-sulfur batteries.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Yin Zhang, Boya Wang, Peng Jing, Yi Guo, Yueying Zhang, Yunhong Wei, Qian Wang, Yun Zhang, Hao Wu
Summary: In this study, an ultralight self-standing interlayer composed of porous curly carbon fibers and cobalt electrocatalysts was introduced into Li-SeS2 batteries. The interlayer captured and boosted the conversion kinetics of dual-intermediate polysulfides/polyselenides, resulting in outstanding high-rate capability and superior cycling stability.
Article
Chemistry, Inorganic & Nuclear
Xiande Zhang, Xin He, Shan Yin, Wenlong Cai, Qian Wang, Hao Wu, Kaipeng Wu, Yun Zhang
Summary: The unique heterostructure composed of MnO and MnS confined in carbon microspheres showed improved lithium storage performance due to the abundance of electrochemically active sites, alleviated volumetric variation, enhanced conductive network, and enhanced lithium-ion diffusion kinetics. The heterostructure also promoted the transfer of electrons and accelerated the migration of lithium ions, resulting in remarkable rate capability and exceptional cycling stability.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Kai Yong, Haoyu Fang, Boya Wang, Xiaoling Qiu, Kaipeng Wu, Qian Wang, Yun Zhang, Hao Wu
Summary: By synergistic structural engineering, a high-performance PAA composite electrode with improved conductivity and energy storage capacity is successfully prepared, showing high specific capacity and fast charging capability. The application of 3D-printed composite electrodes is also demonstrated.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Yi Guo, Wenlong Cai, Yi Lin, Yueying Zhang, Song Luo, Kaixin Huang, Hao Wu, Yun Zhang
Summary: This study proposes a solution to the issues of zinc dendrites and side reactions in aqueous zinc ion batteries by constructing a Zn2+ redistributor using weighing paper as an interlayer. The weighing paper exhibits a high water-locking ability to terminate side reactions and contains functional -O groups that can adsorb and facilitate the desolvation process of Zn2+. The electrode covered with weighing paper shows a highly reversible plating/stripping behavior with a long lifespan, even with lean electrolyte and cost-effective separators. This cost-effective and high-performing interlayer engineering holds great potential for practical applications of aqueous zinc ion batteries.
ENERGY STORAGE MATERIALS
(2022)
Article
Chemistry, Applied
Aipeng Zhu, Qin Wang, Yin Zhang, Yueyin Zhang, Xiaogang He, Kaipeng Wu, Hao Wu, Qian Wang, Wenlong Cai, Yun Zhang
Summary: In this study, a stable Li0.5Mn0.5O layer was in-situ constructed on the surface of Li-rich layered oxide (Li1.2Mn0.6Ni0.2O2) through acetic passivation and calcination process. This modification layer improved the ion diffusion kinetics, resulting in enhanced cycling stability and rate performance.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Chemistry, Applied
Guochuan Wang, Hongmei Wang, Guangqiang Ma, Xinhe Du, Liyu Du, Peng Jing, Yanqing Wang, Kaipeng Wu, Hao Wu, Qian Wang, Yun Zhang
Summary: Li4Ti5O12 (LTO) anode material with stable spinel structure and high lithiation/de-lithiation potential was successfully synthesized using a novel solid-phase synthesis route. The amorphous crystal structure of metatitanic acid (HTO) was found to be more conducive for Li+ insertion, allowing for the preparation of LTO at a lower sintering temperature. The use of glucose pre-coating effectively enhanced the conductivity, inhibited particle growth, and avoided impurity formation, resulting in excellent electrochemical performance of the obtained ALTO@C anode material. In addition, the LiCoO2//ALTO@C full cell exhibited outstanding low-temperature properties with high capacity and minimal decay.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Hongmei Wang, Yunhong Wei, Guochuan Wang, Yiran Pu, Li Yuan, Can Liu, Qian Wang, Yun Zhang, Hao Wu
Summary: To achieve high energy densities in lithium-sulfur (Li-S) batteries, it is important to develop dense electrodes and reduce the electrolyte and other lightweight inactive components. In this study, a compact TiO2@VN heterostructure with high true density was proposed as a carbon-free dual-capable host for both sulfur and lithium. The heterostructure integrated adsorptive TiO2 with conductive VN to trap, migrate, and convert polysulfides effectively. The TiO2@VN-S composite exhibited high tap-density and low porosity, resulting in dual-boosted cathode-level peak volumetric/gravimetric-energy-densities and prominent areal capacity. The TiO2@VN also demonstrated lithiophilicity as a host material, allowing for uniform Li nucleation and restrained dendrite growth. This enabled the assembled full-cell to achieve high electrode-level volumetric/gravimetric-energy-density with limited lithium excess.
Article
Chemistry, Physical
Peng Jing, Changhaoyue Xu, Yin Zhang, Haijiao Xie, Qianyu Zhang, Hao Wu, Kaipeng Wu, Qian Wang, Yun Zhang
Summary: A novel in-situ oxidization strategy was developed to construct an ideal Se/dual-carbon composite, which greatly improves the cycle life and high-rate capability of the battery.
ENERGY STORAGE MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Peng Jing, Qiong Wang, Chunxiang Xian, Liyu Du, Yin Zhang, Boya Wang, Hao Wu, Kaipeng Wu, Qian Wang, Yun Zhang
Summary: A hierarchical framework composed of FeSe nanoparticles and carbon matrix was developed, demonstrating excellent rate performance and cycling stability. The structure with porous and elastic characteristics could release the stress induced by volume change, ensuring structural integrity during cycling. Ultrafine FeSe particles and the conductive network carbon matrix facilitated rapid electron/ion transfer capability and considerable surface active sites, contributing to fast charging and discharging reactions.
INORGANIC CHEMISTRY FRONTIERS
(2021)
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)
