Review
Engineering, Environmental
Hyebin Jeong, Jooyoung Jang, Changshin Jo
Summary: This article summarizes the role of the current collector (CC) in battery systems and the problems that exist, with a particular focus on coating methods as a new approach for CC modification. It analyzes the applications of different coating materials and methods in state-of-the-art battery systems.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Xinlin Huang, Chuang Wang, Chuanfa Li, Meng Liao, Jiaxin Li, Haibo Jiang, Yao Long, Xiangran Cheng, Kun Zhang, Pengzhou Li, Bingjie Wang, Huisheng Peng
Summary: Fiber lithium-ion batteries are a promising power strategy for wearable electronics, but are hindered by low energy densities. A braided fiber current collector was developed to increase the mass fraction of active materials and promote ion transport. The resulting battery had a high energy density of 62 Wh kg(-1) and a specific capacity of 170 mAh g(-1), which was 2 times higher than that of solid copper wire.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Analytical
Huan Chen, Yongpeng Zhao, Huitong Zhao, Hui Huang, Ningxuan Wen, Chen Wang, Zeng Fan, Liang Hao, Lujun Pan
Summary: In this study, hybrid films constructed from carbon nanotubes (CNTs) and carbon nanocoils (CNCs) were used as current collectors (CCs) for lithium-ion batteries (LIBs) through a simple vacuum filtration method. The film with a mass ratio of CNTs: CNCs = 3:1 showed the best performance, with a high capacity of 135.7 mAh g-1 at 5C and stable cycling performance (>99% capacity retention) after 500 charge/discharge cycles at 1C. The well-constructed CNC skeleton achieved excellent contact between the active materials and the CNT-CNC hybrid film, allowing for a uniform and interconnected structure. This study demonstrates the promising potential of CNT-CNC hybrid films as CCs for high-performance LIBs.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Review
Chemistry, Physical
Pengcheng Zhu, Dominika Gastol, Jean Marshall, Roberto Sommerville, Vannessa Goodship, Emma Kendrick
Summary: This review article presents six types of materials for current collectors, including Al, Cu, Ni, Ti, stainless steel and carbonaceous materials, and compares them based on five aspects of electrochemical stability, electrical conductivity, mechanical property, density, and sustainability. The effects of three different structures of foil, mesh, and foam as well as two treatments of chemical etching and coating are also discussed, highlighting future opportunities for next-generation lithium-ion batteries.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Hongning Chen, Yao Liu, Xuefeng Zhang, Quan Lan, Yue Chu, Yongliang Li, Qixing Wu
Summary: Utilizing carbon felt as the 3D current collector in a single-component slurry based lithium-ion flow battery can significantly decrease slurry viscosity, increase the volume ratio of active materials, and improve volumetric capacity and energy density of the battery. This concept shows potential for minimizing viscosity and maximizing volumetric capacity in slurry based flow batteries.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Er-Chieh Cho, Cai-Wan Chang-Jian, Yen-Ju Wu, Szu-Han Chao, Jen-Hsien Huang, Kuen-Chan Lee, Huei Chu Weng, Shih-Chieh Hsu
Summary: The study demonstrates that using graphene-modified Al foils in lithium ion batteries can improve charge/discharge performance and cycling stability.
JOURNAL OF POWER SOURCES
(2021)
Article
Materials Science, Multidisciplinary
Xiangnan Yu, Yang Jiang, Xiao Yang, Zhaoheng Cai, Yang Hua, Shichun Yang, Huizhi Wang, Xinhua Liu, Liliang Wang
Summary: The freestanding PDCNT film demonstrated low mass density, excellent flexibility, and high electrochemical stability, while the HSSi-PDCNT anode delivered a specific capacity of 750 mAh g(-1) after 200 cycles. The innovative and simple fabricating method proposed in this study can be widely used to develop high-performance flexible current collectors, especially in the application of LIBs.
Article
Chemistry, Physical
Xi Huang, Yicheng Ding, Kailin Li, Xuyun Guo, Ye Zhu, Yuxin Zhang, Zhihao Bao
Summary: The study introduces a new process where silica nanomaterials are converted into silicon nanostructures with a conformal carbon nanolayer to form Si@C. Si@C derived from diatomite shows excellent performance, providing a scalable method for synthesizing high-performance LIB anode materials.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Feng Jiang, Yaocai Bai, Limin Zhang, Wenqing Zhao, Peng Ge, Wei Sun, Xinghua Chang, Xiaobo Ji
Summary: Mineral-derived carbon-coated Cu5FeS4 anode material demonstrates outstanding performance in both sodium-ion and lithium-ion batteries, delivering high reversible capacity and superior long-term cycling performance. This work sheds light on potential energy storage applications for naturally abundant mineral-based materials.
ENERGY STORAGE MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Jichen Jia, Hao Liu, Shenglong Liao, Kai Liu, Yapei Wang
Summary: This article introduces a novel shape-memorized current collector (SMCC) that can effectively prevent battery thermal runaway. The collector has ideal conductivity at normal temperatures and turns insulative at overheating temperatures, enabling the battery to shut down automatically before the occurrence of fire and explosion.
Article
Materials Science, Multidisciplinary
Konstantin Pushnitsa, Alexandra Kosenko, Vladislav Chernyavsky, Alexander A. Pavlovskii, Pavel Novikov, Anatoliy A. Popovich
Summary: A novel copper-coated graphite felt is proposed as a current collector for lithium-ion batteries, which can enhance the energy density of the batteries. The copper coating reduces the charge transfer resistance and increases the capacity of the material. This study has significant implications for the development and application of lithium-ion batteries.
Review
Electrochemistry
Minhao Shi, Yinghui Ren, Jianyun Cao, Zengyu Kuang, Xiaojun Zhuo, Hui Xie
Summary: Discharge pre-treatment of decommissioned lithium-ion batteries is crucial for ensuring safety and improving the overall benefits of battery recycling. This review discusses the latest research progress in discharge pre-treatment, evaluates existing technologies, and examines the potential of discharge pre-treatment in energy recovery, increasing cathode lithium content, and reducing pollution. It provides a new perspective for the development of discharge pre-treatment technology and enhancing the comprehensive benefits of lithium-ion battery recycling.
BATTERIES & SUPERCAPS
(2023)
Article
Chemistry, Analytical
Jiarui Huang, Qingshan Dai, Chengjie Cui, Hiabo Ren, Xiaojing Lu, Yong Hong, Sang Woo Joo
Summary: A cake-like porous Fe3O4 coated with a carbon layer (Fe3O4@C nanocakes) has been prepared and used as an anode for lithium-ion batteries (LIBs). The Fe3O4@C nanocakes show superior electrochemical properties and rate behavior, making them a potential electrode for LIBs with high specific capacities.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Yanzhou Duan, Jinpeng Tian, Jiahuan Lu, Chenxu Wang, Weixiang Shen, Rui Xiong
Summary: In this paper, a deep learning-based method using a convolutional neural network is proposed to predict impedance spectra in lithium ion batteries over their lifespan. The results show accurate predictions of impedance spectra, validating the effectiveness of the method.
ENERGY STORAGE MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Dai Haihua, Li Kairui, Dai Zhengkun, Zheng Xiaoyan, Wang Yonglong, Li Yesheng
Summary: By changing the structure of LTO material through pre-delithiation (activation) and introducing CMF as a current collector, a high specific capacity and high stability LTO electrode was successfully prepared, exhibiting excellent rate performance.
RARE METAL MATERIALS AND ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Zhi-Xiong Huang, Xue-Li Zhang, Xin-Xin Zhao, Yong-Li Heng, Ting Wang, Hongbo Geng, Xing-Long Wu
Summary: In this study, hollow P2-Na0.62K0.05Mn0.7Ni0.2Co0.1O2 polyhedra with exposed stable {001} facets and riveted K+ ions were successfully synthesized. The cathode material showed high capacity, air stability, and cycling stability due to the blockage of phase transition and the improved transfer of sodium.
SCIENCE CHINA-MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Rui Jiao, Yan-Fei Li, Guo-Duo Yang, Wen-Chen Wang, Lei Ding, Jian Lin, Yi-Han Song, Jia-Yu Zhang, Xing-Long Wu, Jing-Ping Zhang, Ming-Xiao Deng, Hai-Zhu Sun
Summary: Synthesizing alloy-type materials is an effective method to prevent lithium dendrites in Li metal anode due to their good lithiophilicity and easy electrochemical reaction with lithium. However, previous studies have neglected the alloying reaction process between Li+ and X. In this work, a novel approach involving the alloy reaction between Li+ and Zn is developed to inhibit lithium dendrites more effectively. A three-dimensional substrate material loaded with metallic Zn on the surface of Cu foam is synthesized, enabling a more uniform Li nucleation and growth. The full cell demonstrates a reversible capacity of 122.5 mAh g(-1) and a high capacity retention of 95% after 180 cycles.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Qi-Min Yin, Zhen-Yi Gu, Yan Liu, Hong-Yan Lu, Yi-Tong Liu, Yan-Ning Liu, Meng-Yuan Su, Jin-Zhi Guo, Xing-Long Wu
Summary: In this study, an anion-regulated strategy was proposed to optimize the performance of the Na3.4Mn1.2Ti0.8(PO4)(3) phosphate cathode for sodium-ion batteries. By introducing F anions, the rate performance and cycling stability of the material were significantly improved, and the reaction kinetics were enhanced. This research demonstrates that the anion regulation strategy provides a new method for designing high-performance phosphate cathode materials for sodium-ion batteries.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Xue-Li Zhang, Zhi-Xiong Huang, Yan-Ning Liu, Meng-Yuan Su, Kai Li, Xing-Long Wu
Summary: Layered transition metal oxides show great potential as cathode materials for sodium-ion batteries. In this study, the combination of surface CeO2 modification and trace doping of Ce elements improves the oxygen redox and enhances the structural stability and electrochemical performance of the material.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Zhi-Xiong Huang, Xue-Li Zhang, Xin-Xin Zhao, Hong-Yan Lu, Xin-Yi Zhang, Yong-Li Heng, Hongbo Geng, Xing-Long Wu
Summary: Sodium-ion batteries (SIBs) are considered a promising alternative to lithium-ion batteries due to their similar mechanism and the abundance of sodium. In this study, a Li-Ni-Co co-substituted P2-Na 0.67 [Li 0.1 (Mn 0.7 Ni 0.2 Co 0.1 ) 0.9 ]O 2 (NLMNC) cathode with ribbon superstructure is prepared to enhance the performance of SIBs. The addition of Ni and Co improves the structural stability and triggers oxygen redox activities. The NLMNC cathode exhibits smooth charge/discharge profiles and demonstrates excellent cycling stability with a capacity retention of 94.4% after 100 cycles.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Jian Lin, Yanfei Li, Yihan Song, Jingping Zhang, Haiming Xie, Haizhu Sun
Summary: The inner-outer dual space protection of MoS2 fibers is achieved by regulating the surface and interface structure of electrospinning precursors. This work provides a new idea for the preparation of stable anodes for alkali metal ion secondary batteries, with a decent cycling performance and satisfying rate capacities.
Article
Chemistry, Multidisciplinary
Wan-Yue Diao, Dan Xie, Yuan Sang, Fang-Yu Tao, Chang Liu, Hai-Zhu Sun, Wen-Liang Li, Xing-Long Wu, Jing-Ping Zhang
Summary: In this study, a liquid-dynamic and self-adaptive protective layer is constructed on the Zn metal surface to improve the reversibility and stability. The outer layer consists of liquid PFPE, which can adapt volume change and inhibit side reactions. The inner layer is composed of in-situ formed ZnF2, which accelerates ion transfer and restricts dendrite formation.
Article
Chemistry, Multidisciplinary
Chang Liu, Wen-Bin Jiang, Dan Xie, Wan-Yue Diao, Fang-Yu Tao, Xin-Zhe Wang, Hai-Zhu Sun, Wen-Liang Li, Xing-Long Wu, Jing-Ping Zhang
Summary: Reconstructing the inner Helmholtz layer (IHL) by introducing an electrolyte additive is a promising strategy to obtain stable Zn metal anodes in aqueous zinc ion batteries (AZIBs). The addition of (4-chloro-3-nitrophenyl) (pyridin-4-yl) methanone (CNPM) to the ZnSO4 electrolyte reshapes the Zn metal anode/electrolyte interface and changes the solvation structure of Zn2+. The CNPM adsorbs on the Zn anode surface and serves as zincophilic sites, leading to uniform Zn deposition along the (002) plane and suppressing dendrite growth and parasitic reactions.
Article
Chemistry, Physical
Yue-Ming Li, Zhi-Wei Wang, Wen-Hao Li, Xiao-Ying Zhang, Cong Yin, Kai Li, Wei Guo, Jing-Ping Zhang, Xing-Long Wu
Summary: By constructing a nanopore structure on a copper foam framework, a 3D electrode with trinary nanogradients was prepared, including conductivity-dielectric, zincophilicity, and electrolyte concentration. This structure enables reversible plating/stripping with an average Coulombic Efficiency (CE) of 99.5% over 3000 cycles. A full battery with a 3D lean-zinc anode and NH4V4O10 as the cathode was assembled, which can be cycled stably for 500 cycles (2 A g-1).
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Physical
Jian Lin, Yan-Hong Shi, Yan-Fei Li, Yi-Han Song, Xing-Long Wu, Hai-Zhu Sun
Summary: In this study, an electrode with a 2D porous carbon nanosheets (2D-PCS) structure was successfully prepared using borax as the pore-forming agent and heteroatom dopants. The electrode exhibited high capacity and rate performance, and a dual-carbon lithium-ion capacitor (DC-LIC) device was successfully fabricated. This work provides an efficient method for developing highly efficient DC-LIC devices.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Nabilah Al-Ansi, Abdulwahab Salah, Zhen-Yi Gu, Qasem A. Drmosh, Guo-Duo Yang, Jia-Yu Zhang, Muhammad Sajid, Xing-Long Wu, Jing-Ping Zhang, Liang Zhao, Hai-Zhu Sun
Summary: Researchers have developed a hybrid composite by coating MoO3 nanorods with TiO2, significantly improving the cycling stability and electrochemical performance in Li/Na-ion batteries. The optimized electrode achieves impressive capacity and cycling performance in both lithium-ion and sodium-ion batteries.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Chao Meng, Wei-Dong He, Hao Tan, Xing-Long Wu, Hong Liu, Jian-Jun Wang
Summary: To address low Coulombic efficiency and premature failure in Zn metal batteries, an integrated eutectic electrolyte was used to construct a gradient organic/inorganic hybrid SEI layer on the Zn anode. This layer with a gradient structure and composition alleviates corrosion and passivation on the Zn anode, as well as inhibits dendrite growth. The results show a significantly improved Coulombic efficiency of 99.8% over 1200 cycles and a high cumulative plated capacity of 5.57 A h cm(-2) at 5 mA cm(-2).
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Review
Engineering, Chemical
Mingyang Ma, Miao Du, Yan Liu, Hongyan Lue, Jialin Yang, Zelin Hao, Jinzhi Guo, Xinglong Wu
Summary: The demand for large-scale energy storage is increasing due to the decreasing non-renewable resources and deteriorating environmental pollution. Developing rechargeable batteries with high energy density and long cycle performance is an ideal choice to meet the demand of energy storage system.
Article
Chemistry, Physical
Yechen Si, Yunhao Jiang, Jiayi Liu, Hongyu Guan, Xing-Long Wu, Changsheng Shan
Summary: For the first time, an oxidized ZIF-8/polyacrylonitrile (OZPAN) fiber film was designed as a multifunctional interlayer for constructing a high-performance Li metal battery. The OZPAN interlayer demonstrated excellent lithophilicity and uniform porous structure, enabling the battery to exhibit ultralow overpotential, long-term cycling stability, and dendrite-free Li deposition. Furthermore, the Li//LiFePO4 (LFP) full cell showed outstanding capacity, rate performance, and coulombic efficiency during 500 cycles.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Inorganic & Nuclear
Fang-Yu Tao, Dan Xie, Xin-Fang Liu, Hong-Yan Lue, Wan-Yue Diao, Jia-Lin Yang, Wen-Liang Li, Xing-Long Wu
Summary: A lithiophilic Li-B alloy layer is constructed on the lithiophobic Ni foam to promote the growth of Li metal and inhibit dendrite formation. This modification also reduces concentration polarization near the electrode. The resulting electrode shows improved stability and low overpotential.
INORGANIC CHEMISTRY FRONTIERS
(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)
