Issue 54, 2020, Issue in Progress

Three-dimensional hierarchical ZnCo2O4@C3N4-B nanoflowers as high-performance anode materials for lithium-ion batteries

Abstract

ZnCo2O4 has become one of the most widely used anode materials due to its good specific capacity, cost-efficiency, high thermal stability and environmental benignity. However, its poor conductivity and cycle stability have limited its practical application in lithium-ion batteries. To overcome these issues, we constructed a 3D nanoflower composite material (ZnCo2O4@C3N4-B) by combining ZnCo2O4 as a framework and B-doped g-C3N4 (g-C3N4-B) as a new carbon source material via a simple hydrothermal method. ZnCo2O4@C3N4-B exhibited exceptional specific capacitance of 919.76 mA h g−1 after 500 cycles at 0.2 A g−1 and a long-term capacity retention of 97.8% after 1000 cycles at 2 A g−1. The high reversible capacity, long cycling life and good rate performance could be attributed to the 3D interconnected architecture and doping of g-C3N4-B. This work provides a simple and general strategy to design high-performance anode materials for lithium-ion batteries to meet the needs of practical applications.

Graphical abstract: Three-dimensional hierarchical ZnCo2O4@C3N4-B nanoflowers as high-performance anode materials for lithium-ion batteries

Supplementary files

Article information

Article type
Paper
Submitted
13 Jun 2020
Accepted
06 Aug 2020
First published
02 Sep 2020
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2020,10, 32609-32615

Three-dimensional hierarchical ZnCo2O4@C3N4-B nanoflowers as high-performance anode materials for lithium-ion batteries

H. Xiao, G. Ma, J. Tan, S. Ru, Z. Ai and C. Wang, RSC Adv., 2020, 10, 32609 DOI: 10.1039/D0RA05203E

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