Ultrathin Nanosheets of Li2MSiO4 (M = Fe, Mn) as High-Capacity Li-Ion Battery Electrode

被引：324

作者：

Rangappa, Dinesh ^{[1
,2
]}

Murukanahally, Kempaiah Devaraju ^{[1
]}

Tomai, Takaaki ^{[1
]}

Unemoto, Atsushi ^{[1
]}

Honma, Itaru ^{[1
]}

机构：

[1] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan

[2] Int Adv Res Ctr Powder Met & New Mat ARCI, Ctr Nanomat, Hyderabad 500005, Andhra Pradesh, India

来源：

NANO LETTERS | 2012年 / 12卷 / 03期

关键词：

Li2MSiO4; nanosheets; supercritical fluids; high capacity; cathode; ELECTROCHEMICAL PERFORMANCE; LI2FESIO4; LI2MNSIO4;

D O I：

10.1021/nl202681b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Novel ultrathin Li2MnSiO4 nanosheets have been prepared in a rapid one pot supercritical fluid synthesis method. Nanosheets structured cathode material exhibits a discharge capacity of similar to 340 mAh/g at 45 +/- 5 degrees C. This result shows two lithium extraction/insertion performances with good cycle ability without any structural instability up to 20 cycles. The two-dimensional nanosheets structure enables us to overcome structural instability problem in the lithium metal silicate based cathode materials and allows successful insertion/extraction of two complete lithium ions.

引用

页码：1146 / 1151

页数：6

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