Preparation of Co3O4/Nitrogen-Doped Carbon Composite by in Situ Solvothermal with Ionic Liquid and Its Electrochemical Performance as Lithium-Ion Battery Anode

Mingjun Xiao, Yanshuang Meng, Chaoyu Duan, Qianru Hu, Ruinian Li, Fuliang Zhu, Yue Zhang

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

In this work, the Co 3 O 4 /nitrogen-doped carbon (Co 3 O 4 /NDC) composite was prepared by in situ solvothermal method using ionic liquid as carbon and nitrogen sources. The Co 3 O 4 /NDC composite was characterized by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), and electrochemical testing. The HRTEM results show that there is a thin layer of amorphous carbon film on the surface of Co 3 O 4 particles, which can improve the conductivity of Co 3 O 4 and inhibit the fragmentation of material caused by volume expansion. When the Co 3 O 4 /NDC composite is used as the anode material of lithium-ion batteries, the reversible capacity is 1056 mAh g −1 after 50 cycles at 0.1 C. The superior electrochemical performance can be attributed to the synergistic effect of amorphous carbon film, nitrogen doping, and Co 3 O 4 particles.

Original languageAmerican English
JournalIonics
Volume25
DOIs
StatePublished - Feb 1 2019

Keywords

  • Co3O4/nitrogen-doped carbon composite
  • In situ solvothermal method
  • Ionic liquids
  • Lithium-ion batteries

DC Disciplines

  • Manufacturing

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