Article
Electrochemistry
Ran-Ran Yao, Lei Xie, Ya-Qian Wu, Wen-Jie Meng, Yan-Jun He, Dong-Lin Zhao
Summary: Research has shown that by controlling the ratio of magnesium powder and sodium chloride, the morphology of porous silicon can be adjusted, which affects the electrochemical performance of the electrode. Among these electrodes, the MRHDE-Si-5 electrode exhibits the best cycle performance, with a specific capacity of up to 1290.9 mAh g(-1).
ELECTROCHIMICA ACTA
(2021)
Article
Materials Science, Multidisciplinary
Ben Xiang, Wei-Li An, Ji-Jiang Fu, Shi-Xiong Mei, Si-Guang Guo, Xu-Ming Zhang, Biao Gao, Paul K. Chu
Summary: This study demonstrates a method to produce blackberry-like porous silicon nanospheres controllably using a magnesiothermic reduction reaction, providing better control of kinetics and heat release compared to traditional methods. The resulting porous silicon material has higher structural integrity, and the encapsulated composite shows superior cycling stability and rate performance.
Article
Chemistry, Physical
Tianhao Wang, Xiang Ji, Fuzhong Wu, Wanliang Yang, Xinyi Dai, Xuejiao Xu, Jing Wang, Dan Guo, Meili Chen
Summary: A novel three-dimensional coral-like Si nanostructure coated with C/rGO was successfully prepared through high-temperature magnesiothermic reduction, effectively managing volume expansion and enhancing electrode conductivity for improved cycling stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Zhao Zhang, Fengshuo Xi, Xiuhua Chen, Shaoyuan Li, Wenhui Ma, Zhao Ding, Tao Qu, Yongnian Dai, Rong Deng
Summary: In this study, spherical porous silicon was prepared by recycling microsilica waste from the photovoltaic industry, and nitrogen-doped carbon was coated on the surface to create a coral-like structure. The material showed excellent performance in lithium-ion batteries, with good accommodation of volumetric changes of silicon.
ENVIRONMENTAL CHEMISTRY LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Dajin Chen, Chuanying Tao, Tongzhou Chen, Xiaohan Liu, Yong Liu, Gang Xu, Gaorong Han
Summary: In this study, a pomegranate-like silicon-based anode was prepared by magnesiothermic reduction, using hollow-structured Si/void@C nanoparticles self-assembled. The anode exhibited high reversible capacity, long cycle life, and high Coulombic efficiency, attributed to the tolerant presealed void in the carbon shells of the primary nanoparticles.
Article
Chemistry, Multidisciplinary
Mingyuan Zhao, Shaobin Yang, Wei Dong
Summary: In this study, silicon nanofibers were prepared using natural sepiolite as a template via a low-temperature aluminum reduction process. The resulting nanofibers showed a more complete structure and exhibited higher reversible capacity as an anode material for lithium-ion batteries compared to commercial silicon. This simple and low-cost method provides a new strategy for the synthesis of high-capacity silicon anodes.
FRONTIERS IN CHEMISTRY
(2022)
Article
Chemistry, Physical
Feng Hong, Ruxuan Zhou, Chenyu Gao, Yishao Liu, Zhenjie Sun, Yang Jiang
Summary: A gas-phase magnesiothermic reduction strategy was proposed to fabricate highly porous SiOx/nanoSi@C composites. The composites showed excellent electrochemical performance with a reversible capacity of 1067.92 mAh/g.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Biochemistry & Molecular Biology
Xiuxia Zuo, Qinghua Yang, Yaolong He, Ya-Jun Cheng, Shanshan Yin, Jin Zhu, Peter Mueller-Buschbaum, Yonggao Xia
Summary: In this study, a facile HF-free method was proposed to synthesize macro-/mesoporous silicon with good cyclic and rate performance. By increasing the reduction temperature, the structure of the silicon material changed and could effectively withstand mechanical stress, improving the cyclic stability.
Article
Electrochemistry
Naeun Yoon, Chohee Young, DongHwan Kang, Hyejeong Park, Jung Kyoo Lee
Summary: A rotational magnesiothermic reduction (R-MR) system was developed to efficiently produce high purity porous silicon (pSi) with high yield. The carbon-coated pSi/C samples and pSi/C@Gr composites exhibited stable cycling performance at high capacity and high cycling efficiency.
ELECTROCHIMICA ACTA
(2021)
Review
Electrochemistry
Yao Liu, Wei Li, Yongyao Xia
Summary: While carbon, oxide, and silicon-based materials have limitations in current LIB applications, polyanionic compounds have gained attention for their ability to stabilize structures, adjust redox couples, and provide migration channels for guest ions, leading to electrode materials with long-term cycling, high energy density, and outstanding rate capability.
ELECTROCHEMICAL ENERGY REVIEWS
(2021)
Article
Chemistry, Physical
Zhiguo Wang, Biao Zheng, Hui Liu, Chun Zhang, Fangfang Wu, Huayun Luo, Peng Yu
Summary: NPSi@C composites were successfully synthesized via one-step magnesiothermic co-reduction using rice husks and CO2, showing superior lithium storage performance and electrical conductivity. The nanoporous silicon structure accommodates activated silicon and facilitates lithium ion transfer, while the graphitized carbon layers enhance the electrochemical properties of the composites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Xiang Li, Jianwei He, Yucong Liao, Shaoshan Zhu, Yayun Tang, Hanyang Li, Ning Lv, Yuexin Xu, Yadong Wang
Summary: In this study, a conjugate carbonyl polyimide and nano-silicon composite was designed and synthesized to address the challenges of rapid capacity fading and complicated electrode material preparation in silicon-based electrodes for lithium-ion batteries. This composite exhibited a relative high specific capacity and excellent cycling stability, as well as improved electrode kinetics and electrochemical performance.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Physical
Youngmo Yang, Hae-Ri Yang, Hyungeun Seo, Kyungbae Kim, Jae-Hun Kim
Summary: This study presents a modified magnesiothermic method to improve the electrochemical properties of porous Si composite materials, offering an alternative option for commercial lithium-ion battery anodes by controlling the porous structure of the composite materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Jeong-Myeong Yoon, Young-Han Lee, Cheol-Min Park
Summary: This study investigates the use of two structural types of Ga as anodes for Li-ion batteries (LIBs) and develops an optimized Ga-based nanocomposite using a solid-state alloying-dealloying process. The nanocomposite effectively addresses the melting and agglomeration issues of Ga, improving the cycling stability and electrochemical performance of LIBs.
MATERIALS TODAY ENERGY
(2023)
Article
Materials Science, Ceramics
Meng-Xin Ren, Cun-Jian He, Ya-Jing Duan, Yu-Qian Wang, Wen-Jie Meng, Yun-Lei Hou, Dong-Lin Zhao
Summary: The combination of nitrogen-doped carbon shell or graphene with mesoporous structure significantly enhances the electrochemical properties of the composite materials. The synthesis of mesoporous silicon nanocubes coated by nitrogen-doped carbon shell or wrapped by graphene addresses the challenges of large volumetric expansion and poor electrical conductivity, resulting in improved stability and specific capacities of the electrode materials.
CERAMICS INTERNATIONAL
(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)