Article
Chemistry, Physical
Jay Singh, Seulgi Lee, Priya Yadav, Sungjin Kim, Jaekook Kim, Alok Kumar Rai
Summary: In this study, a hydrothermal synthesis method was used to produce a mulberry-like mesoporous CoMoO4 anode material with improved electrochemical properties for lithium ion and sodium ion batteries. The unique morphology of the CoMoO4 material led to high reversible discharge capacity and long cycle stability, making it a promising alternative high-performance anode material for sodium ion battery applications.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Lei Jiang, Weihao Yin, Changjian He, Tingting Luo, Yichuan Rui, Bohejin Tang
Summary: Globular Sb2O4 @ PPy core-shell nanospheres were successfully synthesized using a method that combines controllable synthesis of nanospheres and conductive nanocomposite engineering. These nanospheres possess an ultrastable structure, relatively large void space, and shortened diffusion distance, along with a thin conductive PPy shell that can alleviate the significant volume change. As an anode material for lithium-ion batteries, the obtained Sb2O4 @ PPy core-shell nanospheres exhibit enhanced electrochemical performance and high rate capability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Multidisciplinary
Li Zeng, Hongxue Xi, Xingang Liu, Chuhong Zhang
Summary: Silicon/carbon nanofibers with a core-shell structure were successfully fabricated using a coaxial electrospinning technique, exhibiting excellent electrochemical performance, high electrical conductivity, and structural stability, showing great potential for advanced flexible energy storage.
Article
Materials Science, Multidisciplinary
Zeyu Zhang, Shixiong Sun, Wen Zhang, Jia Xu, Xin Wang, Chun Fang, Qing Li, Jiantao Han
Summary: A watermelon-like core-buffer-shell Si/electrochemically exfoliated graphene/C (Si/EG/C) composite was prepared using ball milling and spray drying. The composite exhibited excellent electrochemical performance due to the presence of folds and voids in the graphene layer, which buffered the volume fluctuations of the silicon core and facilitated fast lithium ion transport. It has potential applications in the next generation of Li-ion batteries.
SCIENCE CHINA-MATERIALS
(2022)
Article
Chemistry, Physical
Zhengqing Fan, Yiting Wang, Songsheng Zheng, Ke Xu, Jianyang Wu, Si Chen, Junhua Liang, Aodi Shi, Zhaolin Wang
Summary: Silicon waste from wafer slicing in the photovoltaic industry was utilized to prepare a submicron core-shell structure anode for lithium-ion batteries (LIBs), exhibiting high capacity retention after multiple cycles. COMSOL Multiphysics and MD simulations confirmed the impact of silicon volume expansion on stable lithium intercalation capacity.
ENERGY STORAGE MATERIALS
(2021)
Article
Chemistry, Physical
Zhixuan Huang, Kaifeng Yu, Doudou Wang, Ye Zhang, Lili Li, Ce Liang
Summary: A facile method for fabricating anode nanocomposites with efficient lithium/sodium storage and excellent cycling stability is reported. The nanocomposites consist of iron phytate nanoparticles embedded in TiO2 and N, P-doped Fe2P@TiO2 core-shell carbon nanofibers. The nanocomposites exhibit high energy density, improved electron transport, and cycling stability due to the structural defects induced by the doped carbon fiber and the inhibiting effect of the TiO2 shell. The anode nanocomposites show outstanding electrochemical performance in lithium/sodium-ion batteries.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Electrochemistry
Xinlong Li, Xinlin Huang, Yuanzhi Chen, Jie Mei, Wanjie Xu, Laisen Wang, Dong-Liang Peng
Summary: The study demonstrated the preparation of monodisperse spinel Li4Ti5O12 (LTO) particles coated with a carbon layer through a solid-phase sintering reaction, which can enhance the rate performances of batteries.
ELECTROCHIMICA ACTA
(2021)
Article
Materials Science, Ceramics
Xue-Qi Lai, Nan Zhang, Xiao Han, Yan-Rong Zhu, Ying Xie, Ting-Feng Yi
Summary: Sea urchin-like LiAlO2@NiCoO2 hybrid composites with core-shell structure assembled with nanoneedles exhibit excellent electrochemical performance, attributed to the large accessible surface area and numerous active sites. The synergy of the sea urchin-like architecture and the ingenious composition design plays a key role in enhancing the specific capacity, cycle performance, and rate capability of the materials.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Xuefang Chen, Xiaofei Yang, Fengling Pan, Tingting Zhang, Xiayu Zhu, Jingyi Qiu, Meng Li, Yue Mu, Hai Ming
Summary: By studying the fluorine-functionalized core-shell silicon-carbon composite, successful surface modification of silicon-based anode material was achieved, resulting in enhanced reversible capacity and capacity retention in lithium-ion batteries. This research demonstrates a promising prospect for regulating interfacial reactions in silicon-based energy storage systems.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Jiantong Sun, Cheng Liu, Huili Wang, Yu Cao, Xinpeng Han, Shaojie Zhang, Haipeng Wang, Yiming Zhang, Aibing Chen, Zhanxu Yang, Jie Sun
Summary: A phosphorus/carbon nanotube@polypyrrole (BP/CNT@PPy) composite with good performance was successfully synthesized using a simple method, showing excellent stability in the application of lithium-ion batteries.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Ying Zeng, Zhiyan He, Mingqi Li
Summary: A core-shell structured monodisperse carbon-rich SiO1.31C1.46H0.81 submicron ceramic sphere with a unique microstructure and carbon content is synthesized. It exhibits higher reversible capacity and rate performance as an anode material for lithium-ion batteries compared to the SiOC-based ceramic materials reported previously in literature.
Article
Chemistry, Physical
Chunhui Li, Chunshun Yuan, Jiyan Zhu, Xuepeng Ni, Kunming Li, Li Wang, Yongjun Qi, Anqi Ju
Summary: Silicon/carbon@porous carbon nanofiber composites prepared by coaxial electrospinning exhibit excellent electrochemical performance and have the potential to be used as high-performance anodes in lithium-ion batteries (LIBs).
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Bo Li, Yuguang Pu, Ting Zhang, Wei Gao
Summary: This study proposes a facile method of synthesizing a yolk-shelled Sn@void@TiO2-x composite using sequential coating and shell-to-core evolution. The optimized void space accommodates the expansion of the Sn core, while the solid TiO2-x outer shell stabilizes the SEI layer and improves electrical conductivity. The electrode demonstrates excellent electrochemical performance.
APPLIED SURFACE SCIENCE
(2022)
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
Chemistry, Physical
Ruirui Gao, Suqin Wang, Zhaoxiu Xu, Hongbo Li, Shuiliang Chen, Haoqing Hou, Jiulin Wang
Summary: The Fe3O4/FeS composite, synthesized by a hydrothermal method, effectively alleviates volume expansion in lithium-ion batteries and forms a high-quality solid-electrolyte interface film, demonstrating superior cycling performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(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)