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Issue 9, 2011
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Polypyrrole-iron-oxygen coordination complex as high performance lithium storage material

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Abstract

Current lithium ion battery (LIB) technologies are all based on inorganic electrodes though organic materials have been hyped as electrodes for years. Disadvantages such as low specific capacity and poor rate performance hinder their applications. Here we report a novel high-performance organometallic lithium-storage material, a polypyrrole-iron-oxygen (PPy-Fe-O) coordination complex. Extended X-ray absorption fine structure (EXAFS) spectroscopy and density functional theory (DFT) calculations indicate that this complex has a multilayer structure. The strong and stable intralayer Fe–N coordination permits the material to possess high specific capacity, the high reversibility of its interlayer Fe–O–Fe interaction during cycling ensures its high cycling stability and the conducting PPy matrix endows it with outstanding rate performance. These findings pave the way to constructing a new type of high-performance organic anode materials for LIBs.

Graphical abstract: Polypyrrole-iron-oxygen coordination complex as high performance lithium storage material

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Supplementary files

Article information


Submitted
09 Mar 2011
Accepted
06 May 2011
First published
24 Jun 2011

Energy Environ. Sci., 2011,4, 3442-3447
Article type
Paper

Polypyrrole-iron-oxygen coordination complex as high performance lithium storage material

Y. Mao, Q. Kong, B. Guo, X. Fang, X. Guo, L. Shen, M. Armand, Z. Wang and L. Chen, Energy Environ. Sci., 2011, 4, 3442
DOI: 10.1039/C1EE01275D

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