Article
Chemistry, Physical
Ming Shi, Ruiwen Li, Yulin Liu
Summary: The research indicates that the LiFePO4/C composite material prepared using special copolymer carbon resource demonstrates excellent performance, including high discharge capacity, superior rate capability, and excellent cycling stability. The porous carbon layers allow for faster lithium ion diffusion and higher active sites, leading to outstanding battery performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Xing-Xing Gu, Shuang Qiao, Xiao-Lei Ren, Xing-Yan Liu, You-Zhou He, Xiao-Teng Liu, Tie-Feng Liu
Summary: A multi-core-shell-structured LiFePO4@Na3V2(PO4)(3)@C composite was successfully designed and prepared to improve the low-temperature performance of LiFePO4 cathode for lithium-ion batteries. The addition of NVP coating in the composite significantly enhanced the electrochemical performance, providing higher capacity and lower polarization even at -10 degrees C. The NASICON-structured NVP effectively reduced polarization for the electrochemical reactions, contributing to the improved performance of LFP@NVP@C composite.
Article
Chemistry, Physical
Yuluo Chen, Jinpeng Luo, Hang Xu, Xinran Hou, Man Gong, Changshu Yang, HuiCong Liu, Xiuqin Wei, Lang Zhou, Chuanqiang Yin, Xiaomin Li
Summary: Due to its excellent thermal stability, polyimide (PI) is considered a promising alternative for high-safety lithium-ion batteries (LIBs) separators. However, the wettability of PI separators to electrolytes remains undesirable. In this study, a composite membrane with a core-shell structure was developed using the complexation-hydrolyzation method, where gamma-Al2O3 nanoparticles were anchored on PI nanofibers (PI@gamma-Al2O3) as an LIB separator. The results showed that the PI@gamma-Al2O3 nanofiber membrane exhibited improved physicochemical properties and electrochemical performances, including enhanced wettability and higher ionic conductivity. Moreover, the membrane maintained a high capacity retention rate after 100 cycles. Therefore, the core-shell PI@gamma-Al2O3 nanofiber membranes have a promising future for the safety and stability of LIBs.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Engineering, Chemical
Guangwen Zhang, Xue Yuan, Chor Yong Tay, Yaqun He, Haifeng Wang, Chenlong Duan
Summary: The study proposes a method of carbothermal reduction combined with multi-stage leaching to recycle lithium from electrode materials. Results show that this method can achieve a comprehensive recovery rate of 87.15% even with a high aluminum content in the electrode materials.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Tahereh Rostami, Behnam Khoshandam, Samane Maroufi
Summary: This paper presents an efficient technique for recycling end-of-life lithium-ion batteries (LIBs) to recover metals. The carbothermal process is used to isolate lithium in solid lithium carbonate, followed by dissolution in cold water and a second carbothermal reduction to obtain high purity metals.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Nanoscience & Nanotechnology
Erpan Zhang, Wenjun Yan, Shiyu Zhou, Min Ling, Houpan Zhou
Summary: In this study, Fe3O4@uio66 core-shell composite was prepared by a facile method. Compared to pure Fe3O4, Fe3O4@uio66 shows enhanced selective response to volatile organic compounds, especially electrolyte vapors of lithium-ion batteries, and long-term stability due to the preconcentrator feature and thermal stability of the uio66 thin shell. Real-time detection of electrolyte leakage in a punctured lithium-ion battery further demonstrated the practical ability of the Fe3O4@uio66 sensor with long-term aging stability.
Article
Chemistry, Multidisciplinary
Wanwan Hong, Anni Wang, Lin Li, Tianyun Qiu, Jiayang Li, Yunling Jiang, Guoqiang Zou, Hongjian Peng, Hongshuai Hou, Xiaobo Ji
Summary: The spongiform porous Bi/C composite (Bi@PC) prepared by carbothermal reduction (CTR) method shows excellent performance as a potential anode for lithium ion batteries (LIBs), with superb capacity and convenient preparation method.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Biaobing Chen, Min Liu, Shuang Cao, Gairong Chen, Xiaowei Guo, Xianyou Wang
Summary: This paper presents a new method for recovering FePO4 and Li2CO3 from spent LiFePO4 cathode materials to address the shortage of lithium resources. It was found that a sample with 12% carbon content in the LiFePO4 composite demonstrated better electrochemical performance.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Cong Zhou, Hongyu Wang, Quanqing Li, Feichao Wu, Shuyi Cao, Jingde Li, Zhaoyang Tan
Summary: In this study, a metal-organic framework-derived Ag/C core-shell composite integrated with a carbon nanofiber film was developed to address the issues of dendrite growth and shuttle effect in Li-S batteries. The composite regulates the Li and sulfur electrochemical processes, achieving uniform Li deposition and accelerated polysulfides conversion, leading to improved capacity and cyclability of Li-S batteries.
ADVANCED FIBER MATERIALS
(2023)
Article
Chemistry, Analytical
Wenzhen Zou, Ting Li, Zhendong Yao, Meiqiang Fan, Tingli Ma
Summary: This study designs and prepares a ZIF-8/SiOx/ZIF-8 composite with core-shell structure to overcome the low conductivity and volume expansion issues of silicon oxide in lithium-ion battery anode materials. The research shows that ZIF-8 not only regulates the particle size of SiOx, but also builds a three-dimensional network structure to provide buffer space, effectively preventing capacity loss caused by SiOx detachment from the anode surface.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Hao Zhang, Lihua Wang, Yongzhi Chen, Xu Wen
Summary: This study investigates the regeneration of cathode materials of discarded lithium-iron phosphate batteries using a pre-oxidation and reduction method. The results show that under specific conditions, regenerated LiFePO4/C with excellent cycling stability can be obtained. This research provides new insights for the high-value recycling and regeneration of other scrapped lithium-ion batteries.
Article
Chemistry, Physical
Lingfeng Zhu, Yun Wang, Minji Wang, Yaping Xiong, Ze Zhang, Ji Yu, Yaohui Qu, Jianxin Cai, Zhenyu Yang
Summary: Inspired by the structure of areca, MnO@C composites with a core-shell structure were successfully prepared and demonstrated superior performance in lithium-ion batteries. The formation mechanism of the composites was successfully clarified through heterogeneous contraction and carbon pyrolysis processes.
Article
Chemistry, Physical
Yang Liu, Cai Qi, Dandan Cai, Xiao Tang, Ying Li, Wenxian Li, Qinsi Shao, Jiujun Zhang
Summary: The development of electrode materials with high capacity and rate capability is necessary for improving the energy density and cycle life of lithium-ion batteries (LIBs). In this study, a cathode material, LiFePO4/C, modified with high electrical conductivity compound tantalum carbide (TaC), was successfully synthesized via hydrothermal method. The co-coating of nano-sized TaC and amorphous carbon layer on the surface of LiFePO4 particles allows for efficient electron and Li ion transfer, resulting in improved electrochemical kinetics. As a cathode material for LIBs, this composite demonstrates excellent electrochemical performances with high reversible capacity (159.0 mAh g(-1), 0.1C) and improved rate capacity. This methodology provides a new prospect for the application of transition metal carbides (TMCs) in modifying battery electrode materials.
Article
Engineering, Environmental
Zhiming Yan, Anwar Sattar, Zushu Li
Summary: This study presents an improved method for lithium recovery from Li(NixMnyCo1-x-y)O2 cathode materials, combining carbothermal reduction and water leaching. The reduction products at different temperatures are clarified, and the effects of various factors on lithium leaching efficiency are analyzed. The results show that the improved lithium extraction process can effectively recover over 93% of lithium with a purity greater than 99.5%. Additionally, the effect of aluminium and copper impurities on the lithium recovery rate is investigated.
RESOURCES CONSERVATION AND RECYCLING
(2023)
Article
Nanoscience & Nanotechnology
Yingmeng Zhang, Shaojun Li, Luting Liu, Yihan Lin, Shengyang Jiang, Yongliang Li, Xiangzhong Ren, Peixin Zhang, Lingna Sun, Hui Ying Yang
Summary: This study presents a novel core-shell-shell Sb2S3/Sb@TiO2@C nanorod composite, which exhibits enhanced energy storage performance. The Sb2S3/Sb cores are partially reduced into metallic Sb and the TiO2 shell creates oxygen vacancies during the carbothermic reduction process. The double-shelled design of TiO2 and carbon provides dual protection and buffers the volume changes.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Analytical
Meng-Xin Bai, Jian-Fei Gao, Zheng-Hua He, Jing-Feng Hou, Ling-Bin Kong
Summary: In this study, VO2(B) nanoflakes with petal-shaped folds were reported, which exhibited higher electrochemical activity, quicker electron transfer kinetics, and better electronic conductivity. The VO2(B) showed remarkable rate performance and cycling stability at high current densities, indicating its potential application in aqueous zinc ion batteries. This research provides insights into improving the performance of cathode materials for such batteries.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Jian-Fei Gao, Jing-Feng Hou, Ling-Bin Kong
Summary: Pseudocapacitive behavior is a popular research topic in the field of electrochemistry. This article reports the pseudocapacitive behavior of copper tungstate hydrate for the first time and compares it with MXene. Copper tungstate hydrate exhibits a new type of intercalation pseudocapacitive behavior and has a high volumetric specific capacitance.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
Zhi-Chan Lu, Jian Liu, Ling-Bin Kong
Summary: Lithium ion capacitors (LICs) that combine the features of supercapacitors and lithium-ion batteries have attracted significant research attention. Balancing the electrochemical kinetics between capacitive-type cathode and battery-type anode materials is critical for constructing high-performance LICs. Using a one-carbon dual-purpose strategy to simultaneously manipulate MoSe2/layered microporous carbon heterostructure anode (MoSe2@LMC-1.5) and amorphous microporous carbon cathode (LMC) shows promising results in improving lithium ion storage performance.
SOLID STATE IONICS
(2022)
Article
Chemistry, Physical
Mao-Cheng Liu, Yu-Shan Zhang, Bin-Mei Zhang, Ling-Bin Kong, Yu-Xia Hu
Summary: This study investigates the use of Co atom protection layers to address the self-stacking and consumption issues in MXenes, a type of two-dimensional nanomaterials used for Li+ storage. The Co atom layers not only prevent self-stacking and expand the interlayer spacing of Ti3C2, but also reduce the consumption of Li+ and electrolyte by forming a thin solid electrolyte interphase (SEI) film. The findings show that 65-Co/m-Ti3C2 exhibits the best specific capacity and rate capability, attributed to its superior diffusion coefficient in Li+ storage process. The addition of Co atom protection layers provides an approach to expand interlayer spacing and protect 2D nanomaterials.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Electrochemistry
Jian-Fei Gao, Jing-Feng Hou, Ling-Bin Kong
Summary: Pseudocapacitive behavior is a highly studied topic in the field of electrochemistry. Accurately distinguishing between capacitive, pseudocapacitive, and battery behavior is a challenging task. Moreover, the discovery of non-Faraday capacitive charge storage mechanism in non-carbon-based materials has posed difficulties in defining the electrochemical behavior of newly discovered materials. This study presents the first report on the pseudocapacitance behavior of sanmar-tinite (ZnWO4), showing ideal rectangular cyclic voltammetry curves and isosceles triangle galvanostatic charge/discharge curves. The calculated value of b, 0.88, further confirms that the kinetic process is controlled by surface capacitance.
ELECTROCHIMICA ACTA
(2023)
Article
Electrochemistry
Bei Zhao, Mao-Cheng Liu, Dong-Ting Zhang, Ya-Qin Wang, Hao Chen, Ling-Bin Kong, Cheng-Gong Chang
Summary: Ti3C2-MXene has been widely studied for energy storage applications due to its adjustable surface chemistry, excellent electronic conductivity, and unique layered structure. However, the diffusion kinetics of alkali metal ions in Ti3C2 is limited by the interlayer spacing. In this study, a diphenic acid (DHA) molecular welding strategy is used to prepare DHA-Ti3C2 with enlarged interlayer spacing, improving ion diffusion rate and structure stability. DHA-Ti3C2 exhibits high rate capability and long-term cycle stability with specific capacities of 444 mAh g(-1) and 156 mAh g(-1) after 200 cycles and 1700 cycles in Li+/Na+ batteries, respectively. This study provides a strategy to efficiently tune the layered structure of 2D materials for optimal alkali metal ions storage performance.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Analytical
Zheng-Hua He, Jian-Fei Gao, Ling -Bin Kong
Summary: Supercapacitors (SC) and hydrogen evolution reactions (HER) play important roles in electrochemical storage and conversion. Developing low-cost and high-performance materials for SCs and HER devices is crucial. Nickel-based materials have advantages as both positive materials for SCs and hydrogen evolution catalysts. In this study, NiF2 material with rutile phase structure was prepared and showed excellent electrochemical performance, including high specific capacitance and good rate performance in alkaline electrolyte, and stable hydrogen evolution at low overpotential in acidic electrolyte. Therefore, NiF2 holds great promise as a future electrode material for SCs and HER.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Maocheng Liu, Dongting Zhang, Bao Liu, Chenyang Tian, Bei Zhao, Yaqin Wang, Yuanyi Wang, Yuxia Hu, Lingbin Kong, Dan Luo, Zhongwei Chen
Summary: This study presents a molecular welding strategy to stabilize MXenes structure and enlarge interlayer spacing through a dehydration condensation reaction. The Nb2C/BTC composite materials exhibit enhanced rate capability and cycling stability as electrodes in alkali metal ion batteries. The research provides a new approach to improve the performance of MXenes in batteries.
Article
Chemistry, Physical
Mao-Cheng Liu, Chen-Yang Tian, Dong-Ting Zhang, Yu-Shan Zhang, Bin-Mei Zhang, Yuan-Yi Wang, Chen-Yang Li, Ming-Jin Liu, Bingni Gu, Kun Zhao, Ling-Bin Kong, Yu-Lun Chueh
Summary: This study demonstrates the inhibition of dendrite growth and side reactions on the zinc anode through the use of a hydrophobic organic-inorganic surface modification layer, which provides a solid foundation for the realization of ultra-stable zinc ion batteries.
Article
Meteorology & Atmospheric Sciences
Hao Ding, Lingbin Kong, Yingchang You, Jingying Mao, Weihua Chen, Duohong Chen, Ming Chang, Xuemei Wang
Summary: Based on different track types of tropical cyclones, this study finds that tropical cyclones can have an impact on the characteristics of ozone pollution in the Pearl River Delta region. By classifying the tropical cyclones that landed on the South China coastal area between 2009 and 2018 into different types, it is found that certain types of tropical cyclones can significantly increase ozone concentration in the PRD region and lead to longer ozone pollution duration.
ATMOSPHERIC RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Zheng-Hua He, Jian-Fei Gao, Ling-Bin Kong
Summary: CoF2 was successfully synthesized by solvothermal method, showing micron particles with uneven size and shape as its morphology. It exhibited electrochemical activity only in alkaline electrolytes, with distinctive pseudocapacitance behavior in LiOH solution. Moreover, as a catalyst for HER, CoF2 achieved a low overpotential of 168 mV to achieve a current density of 10 mA cm(-2) in 1 M KOH solution. This research offers a novel way to explore high-performance electrode materials for SC and HER.
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Article
Chemistry, Physical
Jun Peng, Lei Xian, Ling-Bin Kong
Summary: In this study, Li3HoCl6 was synthesized and Br substitution was conducted to improve the ionic conductivity, resulting in the formation of Li3HoCl4Br2 with significantly enhanced conductivity. The crystal structure remained unchanged with increasing Br substitution up to x = 2. However, further substitution (x = 3) led to a change in the crystal structure.
Article
Chemistry, Physical
Meng-Xin Bai, Zheng-Hua He, Jing-Feng Hou, Jian-Fei Gao, Ling-Bin Kong
Summary: In this study, a solvothermal method was used to prepare curled hydrated VO2(B) nanosheets with modified morphology and structure. The VO2(B) exhibited high specific capacity and retention rate, as well as impressive energy and power density. Such excellent performance was attributed to the suitable nanostructure, high capacitance-controlled kinetic behavior, fast Zn2+ diffusion, and sustained crystal water structure. The energy storage mechanism of the material was H+/Zn2+ co-insertion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Zu-Tao Pan, Zheng-Hua He, Jing-Feng Hou, Ling-Bin Kong
Summary: Prussian blue analogs, specifically CoHCF and FeHCF, have different performance as sodium-ion battery cathode materials. The core-shell structure of CoHCF@FeHCF improves rate performance and cycling stability compared to unmodified CoHCF.
Article
Chemistry, Physical
Jian-Fei Gao, Jing-Feng Hou, Ling-Bin Kong
Summary: Researchers have discovered that Bi2WO6, a typical Aurivillius phase material, exhibits nearly ideal pseudocapacitive behavior. It shows rectangular cyclic voltammetry curves with no redox peaks, similar to carbon materials. The galvanostatic charge-discharge curve is close to an isosceles triangle. The material also presents a high volumetric specific capacitance, making it an ideal support material for pseudocapacitive energy storage.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(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)
