NDLI: Nanoporous LiMn<sub>2</sub>O<sub>4</sub> nanosheets with exposed {111} facets as cathodes for highly reversible lithium-ion batteries

Content Provider	Royal Society of Chemistry (RSC)
Author	Zhao, Xingzhong Liu, Xiaogang Yuan, Jikang Cao, Feng Liu, Yumin Sun, Weiwei
Copyright Year	2012
Abstract	Control over porosity and exposed highly reactive facets is challenging in the area of materials science. Materials with high porosity and reactivity of exposed facets are favorable candidates in catalysis and energy storage. Here we demonstrate a facile template-free route to synthesize nanoporous LiMn2O4 nanosheets composed of single-crystalline LiMn2O4 nanorods with exposed {111} facets via an in situ lithiation of ultrathin MnO2 nanosheets. Nearly 100% of the initial capacity can be retained after 500 cycles at a 1C discharge rate using the nanoporous nanosheets as a cathode, whereas at a discharge rate of 25C, the capacity retention is about 86% of the initial capacity after 500 cycles. The durable cycling performance and high capacity retention can be attributed to the intrinsic highly oriented crystallinity, two-dimensional (2D) nanoporosity and exposed {111} facet of the nanosheet cathode.
Starting Page	20952
Ending Page	20957
Page Count	6
File Format	HTM / HTML PDF
ISSN	09599428
Volume Number	22
Issue Number	39
Journal	Journal of Materials Chemistry
DOI	10.1039/c2jm32658b
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Porosity Materials science Cathode Nanosheet
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry

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Nanoporous LiMn₂O₄ nanosheets with exposed {111} facets as cathodes for highly reversible lithium-ion batteries