Hierarchically nanostructured ZnCo2O4 particles in 3D graphene networks for high-rate and long-life lithium ion batteries

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

2 Scopus Citations
View graph of relations

Author(s)

  • Yang Yang
  • Zihao Li
  • Shanshan Xu
  • Yongbing Tang

Detail(s)

Original languageEnglish
Pages (from-to)46-52
Journal / PublicationMaterials Today Energy
Volume12
Early online date9 Jan 2019
Publication statusPublished - Jun 2019

Abstract

Hierarchical ZnCo2O4 particles hosted by 3D graphene network were synthesized through a one-pot hydrothermal synthesis approach. The as-synthesized ZnCo2O4-graphene composites showed an outstanding overall electrochemical performance as an anode of lithium ion batteries with high specific capacity and excellent cycling stability, i.e., a reversible capacity of 1920 mAh g−1 at a current density of 1000 mA g−1 after 300 cycles. In particular, at an elevated current density of 4000 mA g−1, a high capacity of 1100 mAh g−1 could still be achieved, and it dropped by only 34% to 730 mAh g−1 after 2000 cycles. The synergistic roles of the hierarchically nanostructured ZnCo2O4 and highly-conductive 3D graphene networks in improving the specific capacity, rate performance, and cycling stability were discussed.

Research Area(s)

  • 3D graphene, Anode lithium ion battery, Hierarchical, ZnCo2O4

Citation Format(s)