Issue 22, 2017, Issue in Progress

Hierarchical CuBi2O4 microspheres as lithium-ion battery anodes with superior high-temperature electrochemical performance

Abstract

In the present report, hierarchical CuBi2O4 microspheres are prepared through a hydrothermal route, and applied as anode materials for LIBs. The hierarchical CuBi2O4 microspheres of diameter 2.0–4.0 μm are assembled by crystalline tetragonal nanoparticles with a size of 50–60 nm. The electrochemical performance of the hierarchical CuBi2O4 microspheres shows strong temperature-dependence whereby higher temperatures evidently enhance the electrochemical performance. At an elevated temperature of 70 °C, a reversible capacity of 525.1 mA h g−1 has been achieved after 500 cycles at a current density of 100 mA g−1. Even after being cycled at a high current density of 6.4 A g−1, the hierarchical CuBi2O4 microspheres are still able to deliver a capacity of 585 mA h g−1 when the current density is set back to 100 mA g−1. The superior high-temperature electrochemical performance of the hierarchical CuBi2O4 microspheres is ascribed to their hierarchical structure and outstanding thermostability.

Graphical abstract: Hierarchical CuBi2O4 microspheres as lithium-ion battery anodes with superior high-temperature electrochemical performance

Supplementary files

Article information

Article type
Paper
Submitted
23 Nov 2016
Accepted
20 Feb 2017
First published
27 Feb 2017
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2017,7, 13250-13256

Hierarchical CuBi2O4 microspheres as lithium-ion battery anodes with superior high-temperature electrochemical performance

H. Yin, M. Cao, X. Yu, C. Li, Y. Shen and M. Zhu, RSC Adv., 2017, 7, 13250 DOI: 10.1039/C6RA27216A

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