Article
Chemistry, Physical
Jin Han, Chaochao Zhao, Lei Wang, Jian Song, Dian Yang, Qinghua Tian
Summary: A simple method was developed to prepare a composite of N-doped carbon embedding Si nanoparticles (Si@C) to address the challenges faced by Si materials. The Si@C-2 composite exhibited excellent electrochemical performance and structure stability after a simple ball milling and pyrolysis carbonization process. The findings suggest that Si@C-2 has great potential for advanced LIB anode applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Kikang Lee, Jejun Jeong, Yeoneyi Chu, Jongbeom Kim, Kyuhwan Oh, Jeongtak Moon
Summary: In this study, structurally stable Fe-Si alloy powders were synthesized by high-energy milling, and it was found that the Fe-Si alloy powder after 12 hours of milling showed the best electrochemical properties. The low electrical conductivity and durability of β-FeSi2 were identified as the main factors contributing to the improved battery performance.
Article
Nanoscience & Nanotechnology
Hiroyuki Kawaura, Ryo Suzuki, Yasuhito Kondo, Yuji Mahara
Summary: A scalable process for producing Si anodes with excellent cycle characteristics was developed, by controlling their morphology and structure. The porous Si anodes prepared from Al-Si alloy powders exhibited reversible discharge capacity of 1607 mAh g(-1) after 200 cycles at a rate of 0.1 C with high stability and Coulombic efficiency. This manufacturing process shows great potential for producing high-capacity and long-life lithium-ion batteries.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Shuai Liu, Wenjie Tao, Yang Yu, Sandile Fakudze, Chen Wang, Jiaxin Wang, Jiangang Han, Jianqiang Chen
Summary: In this study, a sandwich structured composite with a buffer layer of porous silicon between the carbon layer and SnO2 layer was developed using ball milling. The introduction of silicon increased the disordered structure of SnO2 and improved the fast charging and cyclic stability of the composite. The composite showed impressive discharge capacity, ultra-long cyclability, and fast charging capability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Yin Zhang, Yangqin Cheng, Jinhua Song, Yanjun Zhang, Qian Shi, Jingxiao Wang, Fanghua Tian, Shuang Yuan, Zhou Su, Chao Zhou, Yang Wang, Sen Yang
Summary: The paper presents a cost-effective method for synthesizing Si and graphene composites through ball-milling, demonstrating their outstanding performance in lithium-ion batteries and potential for large-scale production in the future.
Article
Energy & Fuels
Hong Zeng, Yawen He, Mohamad Chamas
Summary: A Si/Cu composite anode was prepared using a solid mechanosynthesis method and wet chemical etching. The addition of Al80Si20 and super p carbon improved the homogeneity and stability of Si/Cu distribution. The synthesized Si/Cu composites showed higher stability and performance after cycling.
FRONTIERS IN ENERGY RESEARCH
(2022)
Article
Materials Science, Ceramics
Ting-Hao Hsu, Rasu Muruganantham, Wei-Ren Liu
Summary: In this study, novel CuIn2S4 (CIS) material was synthesized and its electrochemical performance was improved through modification with carbon black. The resulting CIS/C composite exhibited higher reversible discharge capacity and maintained stability over 500 cycles. The experiment demonstrates the potential of this composite material for future high-energy Li and post Li-ion batteries applications.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Hui Liu, Yun Chen, Zhiguo Wang, Chun Zhang, Xiong Zhang, Wang Zhou, Jilei Liu, Wei Wang, Peng Yu
Summary: In this study, an effective method for obtaining amorphous/nanocrystalline silicon was developed and applied to improve the cycle stability of conductive materials. The experimental results demonstrate that this amorphous/nanocrystalline silicon exhibits excellent electrochemical properties and can be used as an anode material in lithium-ion batteries to enhance energy density.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Jaehan Lee, Young-Min Kim, Ju-Han Kim, Jee-Woon Jeong, Donghyun Lee, Jae Wook Sung, Young Ju Ahn, Jae-Hyun Shim, Sanghun Lee
Summary: The study optimized the composition of a Si-Ti-Al alloy to achieve excellent electrochemical performance, with enhanced mechanical stability compared to pure silicon material.
Article
Materials Science, Multidisciplinary
Shuai Wang, Zhenfei Cai, Qinyu Wu, Qi Li, Zishan Ahsan, Yangzhou Ma, Hemin Jing, Guangsheng Song, Weidong Yang, Cuie Wen
Summary: Scalable wet high-energy ball milling was used to refine commercial micro-silicon, and water and ethanol were used as process control agents (PCA). The type of PCA used affected the formation of amorphous silicon oxide on the surface of silicon particles, resulting in variations in electrochemical performance. The ball-milled silicon powder with a silicon-to-ethanol ratio of 1:9 showed the best electrochemical performance, displaying good cycling stability.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Chemistry, Physical
Jiaqi Zhu, Dan Cai, Jingru Li, Xiuli Wang, Xinhui Xia, Changdong Gu, Jiangping Tu
Summary: In this study, a 40 μm thin lithium composite anode based on the AlN-embedded reduced graphene oxide (rGO) scaffold was proposed for solid-state lithium metal batteries. The composite anode facilitated well oriented Li deposition and effectively inhibited dendrite growth, leading to improved cycling capability and rate performance.
ENERGY STORAGE MATERIALS
(2022)
Article
Chemistry, Physical
Xiuyun Zhao, Nathiya Kalidas, Vesa-Pekka Lehto
Summary: Silicon is a highly promising anode material for next-generation lithium-ion batteries due to its high capacity and safe potential. Mesoporous silicon has been widely studied for its ability to accommodate volume expansion during cycling and provide stable battery performance. This research investigates the impact of pore characteristics on battery performance by producing self-standing mesoporous silicon films without carbon additives. The study finds that porosity and surface area greatly affect specific capacity and initial Coulombic efficiency, while cycling performance is mainly determined by film thickness. The best mesoporous silicon film anode achieves stable cycling for over 450 cycles with an initial Coulombic efficiency of 81.2% and a limited specific capacity of 1200 mAh/g. This study provides valuable insights for the development of high-performance lithium-ion batteries.
JOURNAL OF POWER SOURCES
(2022)
Article
Thermodynamics
Rongfu Xu, Yueya Shi, Wenhao Wang, Yong Xu, Zhigang Wang
Summary: In this study, porous silicon electrode was prepared by adopting P and Sr complex modification and increasing the cooling rate. The porous silicon exhibited a three-dimensional dendritic porous structure based on SEM characterization. The addition of 5% FEC in the electrolyte solution significantly improved the charge-discharge performance of the porous silicon electrode.
INTERNATIONAL JOURNAL OF GREEN ENERGY
(2022)
Article
Chemistry, Physical
Weixu Zhong, Jiabin Hong, Chunxiang Wang, Zhifeng Li, Jun Chen, Sydorov Dmytro
Summary: Nano-MoS2 and MoS2/graphene nanocomposites were prepared using a simple xylitol auxiliary ball milling method. Xylitol can increase the shear force during ball milling and improve the efficiency of preparing nanomaterials by overcoming the interlayer van der Waals force. The MoS2/graphene hybrid nanosheets exhibit higher discharge capacity and better cycle stability as lithium-ion anode materials. The xylitol auxiliary ball milling method is suitable for scalable preparation of new transitional metal sulfide (TMDS)-based anodes for lithium-ion batteries.
Article
Engineering, Chemical
Haodong Li, Yizhu Lai, Haoyu Li, Qing Yang, Zhiwei Yang, Zhuo Zheng, Yang Liu, Yan Sun, Benhe Zhong, Zhenguo Wu, Xiaodong Guo
Summary: In this study, it was found that nanoporous Si@C anodes prepared using larger particle size silicon exhibited better performance, providing significant guidance for industrial applications.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
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)