广东工业大学学报 ›› 2024, Vol. 41 ›› Issue (03): 29-35.doi: 10.12052/gdutxb.230116

• 材料科学与技术 • 上一篇    下一篇

SnSe2@C储钠负极材料的合成及电化学性能研究

钟家锐, 林琳, 郑程   

  1. 广东工业大学 材料与能源学院, 广东 广州 510006
  • 收稿日期:2023-08-28 出版日期:2024-05-25 发布日期:2024-06-14
  • 通信作者: 郑程(1985-),女,副教授,博士研究生,主要研究方向为钠离子电池,E-mail:zhengcheng@gdut.edu.cn
  • 作者简介:钟家锐(1998-),男,硕士研究生,主要研究方向为钠离子电池电极材料制备,E-mail:2769094782@qq.com
  • 基金资助:
    国家自然科学基金资助面上项目(52372184)

Synthesis and Electrochemical Research of Sodium Storage Anode SnSe2@C

Zhong Jia-rui, Lin Lin, Zheng Cheng   

  1. School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
  • Received:2023-08-28 Online:2024-05-25 Published:2024-06-14

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摘要： 二硒化锡(SnSe2)具有高理论比容量、原料广泛、成本低廉等优点，是一种十分有前途的钠离子电池负极材料，但同时在实际充放电过程中也受限于体积膨胀导致的结构破坏问题。鉴于此，本文通过高温煅烧的方法成功合成了碳包覆的二硒化锡(SnSe2@C)。碳包覆提高了二硒化锡材料作为钠离子电池负极的导电性和稳定性，使得SnSe2@C具有优异的高比容量(在1.0 A·g-1下，比容量为549.0 mAh·g-1)和倍率性能(在5.0 A·g-1下，比容量为427.7 mAh·g-1)。

关键词: 二硒化锡, 纳米材料, 钠离子电池, 负极材料, 电化学

Abstract: Tin selenide (SnSe2) is a very promising negative electrode material for sodium ion batteries, which has advantages such as high theoretical specific capacity, wide range of raw materials, and low cost. However, it is also limited by the structural damage caused by volume expansion during charging and discharging processes. A research is conducted on the successful synthesis of carbon coated tin selenide (SnSe2@C) through high-temperature annealing. Carbon coating improves the conductivity and stability of the material as sodium-ion battery anode, making SnSe2@C has high specific capacity (549.0 mAh·g-1 at 1.0 A·g-1) and excellent rate performance (427.7 mAh·g-1 at 5.0 A·g-1).

Key words: SnSe2, nano material, sodium-ion batteries, anode, electrochemistry

中图分类号: 

  • TM912.5
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