Synthesis of Co3O4 nano-octahedra enclosed by {111} facets and their excellent lithium storage properties as anode material of lithium ion batteries

Gui-Liang Xu, Jun-Tao Li, Ling Huang, Wenfeng Lin, Shi-Gang Sun

Research output: Contribution to journalArticle

117 Citations (Scopus)

Abstract

Nano-sized (nO-Co3O4, 387 nm) and micron-sized (mO-Co3O4, 6.65 μm) Co3O4 octahedra enclosed by {111} facets have been both synthesized through a wet chemical method followed by thermal treatment, and served as anode material of lithium ion batteries (LIBs). Electrochemical results demonstrate that the nO-Co3O4 shows excellent long cyclability and rate capability. The nO-Co3O4 can deliver a stable charge capacity as high as 955.5 mAh g−1 up to 200 cycles without noticeable capacity fading at a charge/discharge current density of 0.1 A g−1 (ca. 0.11C). The excellent electrochemical performance is ascribed to the nano-size and the {111} facets that enclose the octahedra. While the mO-Co3O4 could only maintain 288.5 mAh g−1 after 200 cycles, illustrating very poor cycling performance, which is ascribed to the large particle size that may cause huge volume change during repeated charging/discharging process. The results reveal that the Co3O4 nano-octahedra would be a promising anode material for the next-generation of LIBs.
Original languageEnglish
Pages (from-to)394-402
JournalNano Energy
Volume2
Issue number3
Early online date20 Nov 2012
DOIs
Publication statusPublished - May 2013

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