SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2024, Vol. 67 ›› Issue (3): 78-88.DOI: 10.1016/j.cjche.2023.12.003

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Controllable fabrication of FeCoS4 nanoparticles/S-doped bowl-shaped hollow carbon as efficient lithium storage anode

Ming Zhou1, Mengrong Wu1, Haiwei Yu1, Xiangjun Zheng1, Kuan Shen1, Xingmei Guo1, Yuanjun Liu1, Fu Cao1, Hongxing Gu2, Qinghong Kong3, Junhao Zhang1   

  1. 1 School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China;
    2 Jiangsu Hengshen Co., Ltd, Zhenjiang 212314, China;
    3 School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
  • 收稿日期:2023-07-23 修回日期:2023-11-04 出版日期:2024-03-28 发布日期:2024-06-01
  • 通讯作者: Xiangjun Zheng,E-mail address:zhengxj@just.edu.cn;Junhao Zhang,E-mail address:jhzhang6@just.edu.cn.
  • 基金资助:
    This work was financially supported by the National Natural Science Foundation of China (22379056, 52102260), the Project funded by China Postdoctoral Science Foundation (2022M711545), and the Carbon Peak and Carbon Neutrality Project (Breakthrough for Industry Prospect and Key Technologies) of Zhenjiang City (CG2023003).

Controllable fabrication of FeCoS4 nanoparticles/S-doped bowl-shaped hollow carbon as efficient lithium storage anode

Ming Zhou1, Mengrong Wu1, Haiwei Yu1, Xiangjun Zheng1, Kuan Shen1, Xingmei Guo1, Yuanjun Liu1, Fu Cao1, Hongxing Gu2, Qinghong Kong3, Junhao Zhang1   

  1. 1 School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China;
    2 Jiangsu Hengshen Co., Ltd, Zhenjiang 212314, China;
    3 School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
  • Received:2023-07-23 Revised:2023-11-04 Online:2024-03-28 Published:2024-06-01
  • Contact: Xiangjun Zheng,E-mail address:zhengxj@just.edu.cn;Junhao Zhang,E-mail address:jhzhang6@just.edu.cn.
  • Supported by:
    This work was financially supported by the National Natural Science Foundation of China (22379056, 52102260), the Project funded by China Postdoctoral Science Foundation (2022M711545), and the Carbon Peak and Carbon Neutrality Project (Breakthrough for Industry Prospect and Key Technologies) of Zhenjiang City (CG2023003).

摘要: To address the low conductivity and easy agglomeration of transition metal sulfide nanoparticles, FeCoS4 nanoparticles embedded in S-doped hollow carbon (FeCoS4@S-HC) composites were successfully fabricated through a combination of hydrothermal processes and sulfidation treatment. The unique bowlshaped FeCoS4/S-HC composites exhibit excellent structural stability with a high specific surface area of 303.7 m2·g-1 and a pore volume of≥0.93 cm3·g-1. When applied as anode material for lithium-ion batteries, the FeCoS4@S-HC anode exhibits efficient lithium storage with high reversible specific capacity (970.2 mA·h·g-1 at 100 mA·g-1) and enhanced cycling stability (574 mA·h·g-1 at≥0.2 A·g-1 after 350 cycles, a capacity retention of 84%). The excellent lithium storage is attributed to the fact that the bimetallic FeCoS4 nanoparticles with abundant active sites can accelerate the electrochemical reaction kinetics, and the bowl-shaped S-HC structure can provide a stable mechanical structure to suppress volume expansion.

关键词: Bimetallic sulfides, Bowl-shaped hollow carbon, S doping, Buffering volume expand, Lithium-ion batteries

Abstract: To address the low conductivity and easy agglomeration of transition metal sulfide nanoparticles, FeCoS4 nanoparticles embedded in S-doped hollow carbon (FeCoS4@S-HC) composites were successfully fabricated through a combination of hydrothermal processes and sulfidation treatment. The unique bowlshaped FeCoS4/S-HC composites exhibit excellent structural stability with a high specific surface area of 303.7 m2·g-1 and a pore volume of≥0.93 cm3·g-1. When applied as anode material for lithium-ion batteries, the FeCoS4@S-HC anode exhibits efficient lithium storage with high reversible specific capacity (970.2 mA·h·g-1 at 100 mA·g-1) and enhanced cycling stability (574 mA·h·g-1 at≥0.2 A·g-1 after 350 cycles, a capacity retention of 84%). The excellent lithium storage is attributed to the fact that the bimetallic FeCoS4 nanoparticles with abundant active sites can accelerate the electrochemical reaction kinetics, and the bowl-shaped S-HC structure can provide a stable mechanical structure to suppress volume expansion.

Key words: Bimetallic sulfides, Bowl-shaped hollow carbon, S doping, Buffering volume expand, Lithium-ion batteries