Issue 28, 2014

A flexible electrode based on a three-dimensional graphene network-supported polyimide for lithium-ion batteries

Abstract

Flexible batteries are of great importance for the application in flexible electronic devices. In this paper, a flexible film electrode was designed and prepared by using three-dimensional graphene as a conductive network and polyimide (PI) as an active material. Structural characterization indicates the formation of a uniform composite of PI and graphene. The weight ratio of the active material in the film electrode reaches 80%, and no additive is required during the electrode preparation processes. Compared with the electrode prepared by a conventional method, the hierarchical structure of graphene composited PI in the proposed electrode results in lower resistance for the reaction with lithium ions. PI exhibits a specific capacitance of 175 mA h g−1 as well as high rate performance. After 150 charge–discharge cycles at 0.5 C, 82% of the initial capacity was retained. This hierarchical graphene/PI film has high potential as a cathode for flexible lithium batteries.

Graphical abstract: A flexible electrode based on a three-dimensional graphene network-supported polyimide for lithium-ion batteries

Article information

Article type
Paper
Submitted
21 Qun 2014
Accepted
27 Nah 2014
First published
28 Nah 2014

J. Mater. Chem. A, 2014,2, 10842-10846

Author version available

A flexible electrode based on a three-dimensional graphene network-supported polyimide for lithium-ion batteries

Y. Meng, H. Wu, Y. Zhang and Z. Wei, J. Mater. Chem. A, 2014, 2, 10842 DOI: 10.1039/C4TA00364K

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