Article
Chemistry, Physical
Xingyue Qian, Yixuan Yin, Yuchen Lu, Jiawei Xia, Bingji Huang, Jingwen Sun, Guangyu He, Haiqun Chen
Summary: Designing bimetallic sulfide materials with well-defined nanostructure and high energy density is desirable for high-performance supercapacitors. In this study, a hollow zinc cobalt sulfide dodecahedron with plentiful sulfur vacancies was synthesized, which exhibited enhanced capacitance performance for supercapacitors. The tailored hollow structure accelerated charge transport and facilitated the diffusion of OH-, while the sulfur vacancies increased the amount of contact active sites and enhanced electronic conductivity. The designed bimetallic sulfide showed outstanding electrochemical performance for energy storage devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Energy & Fuels
Rakesh Mondal, Krishna Gopal Nigam, Neeraj Kumar Mishra, Asha Gupta, Preetam Singh
Summary: The energy storage capacity of a material depends on the active-ion arrangement and electron transfer rate at the electrode-electrolyte interface. The pseudocapacitive electrode can improve the power density of full cell in ASCs mode, making grid-scale energy storage and delivery feasible. Anhydrous NiC2O4 QDs exhibit high charge storage capacity and have potential as an energy storage material. A full cell with porous anhydrous NiC2O4 QDs as the positive electrode and activated carbon as the negative electrode shows high specific energy and power density with high cyclic stability in aqueous electrolytes.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Inorganic & Nuclear
Xiaomian Wang, Jianfeng Wu, Qianqian Liu, Miao Cheng, Ruirui Wang, Yinghui Wei, Muzi Chen, Jing Hu, Tao Wei, Yun Ling, Bo Liu, Wanfei Li
Summary: The electrocatalytic sulfur carrier CoS2@ZIF-8(C)@CMK-3 (CoS2@ZCC) was fabricated for the first time, which effectively suppressed the dissolution of polysulfide and shuttle effect, promoting reaction kinetics. The confinement of CoS2 inside ZCC improved interfacial contact and chemisorptivity, leading to high-rate capacity and cyclic stability.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Energy & Fuels
Sreelakshmi Rajeevan, Sam John, Deepalekshmi Ponnamma, Soney C. George
Summary: The combination of graphene with metal sulfides has attracted attention due to their compatibility in structure and exceptional properties. In this study, highly efficient electrode material was synthesized using ionic liquid-modified graphene and ultrathin MoS2 nanosheets. The modified graphene surface increased the number of active sites and allowed for accommodation of MoS2 nanosheets. The synthesized binary electrode showed high specific capacitance and pseudocapacitance.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Engineering, Environmental
Haobin Song, Tong Li, Tingting He, Zhouhao Wang, Daliang Fang, Ye Wang, Xue Liang Li, Daohong Zhang, Junping Hu, Shaozhuan Huang
Summary: This study demonstrates the design of catalytic materials with covalent heterojunction and S vacancy for regulating electronic structure and improving LiPSs conversion kinetics. The Li-S battery with MoS2-x-Co9S(8-y)/rGO interlayer shows high sulfur utilization, excellent rate capability, and long cycle life, highlighting the importance of anion deficiency and heterojunction in high-performance Li-S batteries.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Analytical
Gokcen Gokceli, Serdar Bozoglu, Nilgun Karatepe
Summary: The development of highly graphitized and porous carbon materials is crucial for waste evaluation and energy applications. This study successfully produced simple, safe, and sustainable porous graphitic carbon materials using hazelnut shell powder in the Black Sea region, and investigated the effects of metallic Co and bimetallic Co-Mo catalysts on the properties of the produced materials. The results showed that a Co:Mo ratio of 1:4 exhibited the best performance.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Chemistry, Physical
Shuai Jia, Jie Wei, Baixue Gong, Ziqiang Shao
Summary: In this study, hollow spheres of nickel-cobalt sulfides decorated with sulfur vacancies were prepared as electrode materials for supercapacitors, showing excellent performance in terms of specific capacity, cyclability, and rate capacity. Furthermore, an all-solid-state hybrid supercapacitor device assembled with these materials exhibited outstanding energy density and stability, demonstrating the potential of combining hollow structures with sulfur vacancies for developing high-performance electrode materials.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Energy & Fuels
Ishita Naskar, Partha Ghosal, Melepurath Deepa
Summary: In this study, a unique binder-free composite cathode ZnCo2S4@MgCo2O4 is reported, which exhibits high electrical conductivity, fast ion diffusion, and abundant electrolyte-electroactive site interactions, leading to excellent capacitance performance and cycle life. The effect of different electrolytes on the redox behavior is evaluated, and the potential application of this configuration in consumer-electronic-devices is demonstrated.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Multidisciplinary
Chao Yue Zhang, Chaoqi Zhang, Guo Wen Sun, Jiang Long Pan, Li Gong, Geng Zhi Sun, Jordi Jacas Biendicho, Lluis Balcells, Xiao Long Fan, Joan Ramon Morante, Jin Yuan Zhou, Andreu Cabot
Summary: The study demonstrates that using an external magnetic field in lithium-sulfur batteries can significantly improve the LiPS adsorption ability and Li-S reaction kinetics. The electron spin polarization of Co ions reduces electron repulsion and enhances orbital hybridization, resulting in LSBs with unprecedented performance and stability.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Hong Liu, Mingmei Zhang, Zixiang Song, Tianjiao Ma, Zhiye Huang, An Wang, Shouyan Shao
Summary: In this study, a novel three-dimensional sulfur-doped graphene/cobalt molybdate-molybdenum oxide framework was successfully prepared, showing excellent specific capacity and cycling stability. Utilizing porous carbon prepared from lotus leaf as the negative electrode further enhances charge storage efficiency.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Review
Engineering, Electrical & Electronic
Qingguo Shao, Xuhui Liu, Jianxia Dong, Liheng Liang, Qiqi Zhang, Peixu Li, Shaodan Yang, Xiaobei Zang, Ning Cao
Summary: Transition metal sulfides have potential as electrodes for supercapacitors due to their stability and high capacitance. Single metal sulfides have limitations in terms of surface area and ion transfer, but bimetallic sulfides have gained attention for their theoretical capacities and low cost. This review summarizes and analyzes the recent progress in the synthesis of bimetallic sulfide electrodes using different sulfur sources and vulcanization conditions, and discusses potential improvements in specific capacitance and applications in energy storage devices.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Physical
Yuxin Zhang, Yuhong Jin, Yuanyuan Song, Hao Wang, Mengqiu Jia
Summary: In this study, laminated reduced graphene oxide (rGO) was used to induce the growth of SnCoS4 particles and self-assembled into a nanosheet-structured SnCoS4@rGO composite through a solvothermal procedure. The optimized material showed abundant active sites and facilitated Na. ion diffusion due to the synergistic interaction between bimetallic sulfides and rGO. As the anode material of sodium-ion batteries, this composite maintained a high capacity of 696.05 mAh g-1 after 100 cycles and a high-rate capability of 427.98 mAh g-1 even at a high current density of 10 A g-1. Our rational design provides valuable inspiration for high-performance sodium-ion battery anode materials.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Xiyang Kang, Yutao Dong, Hui Guan, Mohammed A. Al-Tahan, Jianmin Zhang
Summary: This study focuses on the development of lithium-sulfur (Li-S) batteries by fabricating sulfur hosts with cheap and rapid sulfur reaction properties and inhibiting the shuttling effect of lithium polysulfides (LiPSs). Hollow cubic materials with nitrogen-doped carbon derived from Prussian blue analogues (PBA) precursor were prepared at different vulcanization temperatures. Among them, CoS1.097/MnS/NC@NC-600 showed the best performance in terms of adsorption ability and electrocatalytic activity, greatly improving the electrochemical performances of Li-S batteries.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Yanyan He, Caifu Dong, Sijia He, Huan Li, Xiuping Sun, Yuan Cheng, Guowei Zhou, Liqiang Xu
Summary: A series of bimetallic nickel cobalt sulfides with hierarchical micro/nano architectures were successfully fabricated using a facile synthesis strategy, displaying excellent performance in sodium-ion storage. The enhanced conductivity by bimetallic components, the unique coral-like micro/nanostructure, and fast sodium ion diffusion were key factors contributing to the remarkable electrochemical properties observed during charging and discharging cycles.
Article
Engineering, Environmental
Ruya Cao, Jianfeng Zhang, De Wang, Fuwei Sun, Nian Li, Jiaxing Li
Summary: By combining laser-induced graphene (LIG) and electrodeposition, LIG/cobalt sulfide (LIG/Co4S3) electrodes with good adsorption performance were developed for uranium capture using capacitive deionization (CDI) technology. The advantages of this electrode preparation method include simplified graphene preparation and electrode distribution, as well as the three-dimensional structure of LIG which avoids nanosheet aggregation. This study provides a simple and environmentally friendly method for electrode synthesis and serves as a reference for designing efficient electroadsorption materials.
CHEMICAL ENGINEERING JOURNAL
(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)