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作者:

Qiu, Hua (Qiu, Hua.) | Zheng, Hongyu (Zheng, Hongyu.) | Jin, Yuhong (Jin, Yuhong.) | Jia, Miao (Jia, Miao.) | Yuan, Qiong (Yuan, Qiong.) | Zhao, Chenchen (Zhao, Chenchen.) | Jia, Mengqiu (Jia, Mengqiu.)

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EI Scopus SCIE

摘要:

Two-dimensional lamellar MoS2 has been widely studied as an anode material for sodium-ion batteries. However, MoS2 exhibits low electrical conductivity and large volume change during the electrochemical charge-discharge process, resulting in poor electrochemical performance. In this work, the dopamine-derived N-doped carbon-encapsulated MoS2 microsphere (MoS2@NC) composite material was synthesized and employed as anode material for sodium-ion batteries (SIBs). As-prepared MoS2@NC composites exhibited an excellent cycle performance with high specific capacity of 480 mAh g(-1) at a current density of 100 mA g(-1) after 100 cycles and outstanding rate capability (the capacities of 484, 456, 425, 408, and 393 mAh g(-1) at 0.1, 0.2, 0.5, 1, and 2 A g(-1), respectively). The good electrochemical sodium storage performance for MoS2@NC is probably attributed to N-doped carbon layer on the surface of MoS2, which can effectively suppress the volume expansion of MoS2, increase the electric conductivity and limit contact with electrolyte.

关键词:

N-doped carbon Sodium-ion batteries MoS2 Anodematerials Dopamine

作者机构:

  • [ 1 ] [Qiu, Hua]Beijing Univ Chem Technol, Beijing Key Lab Electrochem Proc & Technol Mat, Beijing 100029, Peoples R China
  • [ 2 ] [Zheng, Hongyu]Beijing Univ Chem Technol, Beijing Key Lab Electrochem Proc & Technol Mat, Beijing 100029, Peoples R China
  • [ 3 ] [Jia, Miao]Beijing Univ Chem Technol, Beijing Key Lab Electrochem Proc & Technol Mat, Beijing 100029, Peoples R China
  • [ 4 ] [Yuan, Qiong]Beijing Univ Chem Technol, Beijing Key Lab Electrochem Proc & Technol Mat, Beijing 100029, Peoples R China
  • [ 5 ] [Jia, Mengqiu]Beijing Univ Chem Technol, Beijing Key Lab Electrochem Proc & Technol Mat, Beijing 100029, Peoples R China
  • [ 6 ] [Jin, Yuhong]Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China
  • [ 7 ] [Zhao, Chenchen]Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China
  • [ 8 ] [Jin, Yuhong]Beijing Univ Technol, Beijing Guyue New Mat Res Inst, Beijing 100124, Peoples R China
  • [ 9 ] [Zhao, Chenchen]Beijing Univ Technol, Beijing Guyue New Mat Res Inst, Beijing 100124, Peoples R China

通讯作者信息:

  • [Jia, Mengqiu]Beijing Univ Chem Technol, Beijing Key Lab Electrochem Proc & Technol Mat, Beijing 100029, Peoples R China;;[Jin, Yuhong]Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China;;[Jin, Yuhong]Beijing Univ Technol, Beijing Guyue New Mat Res Inst, Beijing 100124, Peoples R China

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来源 :

IONICS

ISSN: 0947-7047

年份: 2020

期: 11

卷: 26

页码: 5543-5551

2 . 8 0 0

JCR@2022

ESI学科: PHYSICS;

ESI高被引阀值:100

被引次数:

WoS核心集被引频次: 0

SCOPUS被引频次: 25

ESI高被引论文在榜: 0 展开所有

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