Graphene-modified copper chromate as the anode of ultrafast rechargeable Li-ion batteries

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• 作者：C. G. Wang ; J. D. Liu ; X. Li ; Z. C. Wang ; Y. C. Zhao…
• 刊名：Journal of Materials Science
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：52
• 期：4
• 页码：2131-2141
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Materials Science, general; Characterization and Evaluation of Materials; Polymer Sciences; Continuum Mechanics and Mechanics of Materials; Crystallography and Scattering Methods; Classical Mechanics;
• 出版者：Springer US
• ISSN：1573-4803
• 卷排序：52

文摘

Ultrafast rechargeable Li-ion batteries are most urgently needed for personal electronics and commercial application since they could fuel various energy applications. These days, much time and efforts have been paid on the research of ultrafast rechargeable Li-ion batteries, however, less breakthrough was appeared. In this manuscript, the CuCr₂O₄@RGO, a new-type of nanocomposite material, demonstrates a promising future application when it was used as an anode material of the Li-ion batteries. The Li-ion batteries displays a specific capacity of about 410 mAh g−1 and a coulombic efficiency of approximately 98 % at the discharge/charge current rate of 1000 mA g−1. We also found that the batteries constructed by CuCr₂O₄@RGO nanocomposites as active anode materials can be fully charged within 5 min, with a current density of 4000 mA g−1 and strive against more than 900 cycles without capacity decay. All the results indicate that the CuCr₂O₄@RGO nanocomposites with spinel structure of the mixed transitional metal oxide are promising for the anode materials of ultrafast rechargeable Li-ion batteries.