The effect of graphene wrapping on the performance of LiFePO4 for a lithium ion battery

doi:10.1016/j.carbon.2013.01.070

Carbon

Volume 57, June 2013, Pages 530-533

https://doi.org/10.1016/j.carbon.2013.01.070 Get rights and content

Abstract

Graphene wrapping is used to experimentally understand how a carbon coating works in improving the electrochemical performance of the LiFePO₄ cathode for a lithium ion battery. A full wrapping of LiFePO₄ by graphene is realized by a self-assembly driven by the electrostatic interaction in a graphene oxide suspension. Results indicate that a partial graphene wrapping provides a balance between increased electron transport and fast ion diffusion while full graphene wrapping isolates LiFePO₄ from the electrolyte and retards ion diffusion. This indicates that steric hindrance for ion diffusion should be considered together with electron transport in constructing a carbon coating layer.

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Acknowledgments

We appreciate the supports from NSFC (No. 51072131), State Key Laboratory of Heavy Oil Processing, NSF of Tianjin China (No. 12JCZDJC27400), Shenzhen Basic Research Project (No. JC201104210152A) and Joint Project for Guangdong-MOE-MOST (No. 2011B090400342).

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Letter to the EditorThe effect of graphene wrapping on the performance of LiFePO4 for a lithium ion battery

Abstract

Section snippets

Acknowledgments

Nano Energy

J. Power Sources

Understanding and recent development of carbon coating on LiFePO4 cathode materials for lithium-ion batteries

Energy Environ. Sci.

Letter to the Editor
The effect of graphene wrapping on the performance of LiFePO₄ for a lithium ion battery

Understanding and recent development of carbon coating on LiFePO₄ cathode materials for lithium-ion batteries