RETRACTED: High-rate aluminium yolk-shell nanoparticle anode for Li-ion battery with long cycle life and ultrahigh capacity (Retracted Article)

被引：215

作者：

Li, Sa ^{[1
,2
]}

Niu, Junjie ^{[2
,3
]}

Zhao, Yu Cheng ^{[1
]}

So, Kang Pyo ^{[2
]}

Wang, Chao ^{[2
]}

Wang, Chang An ^{[1
]}

Li, Ju ^{[2
,4
]}

机构：

[1] Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

[2] MIT, Dept Nucl Sci & Engn, Cambridge, MA 02139 USA

[3] Univ Wisconsin, Dept Mat Sci & Engn, Milwaukee, WI 53211 USA

[4] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA

来源：

NATURE COMMUNICATIONS | 2015年 / 6卷

基金：

中国国家自然科学基金;

关键词：

ELECTROCHEMICAL LITHIATION; LI+/ELECTRON CONDUCTIVITY; TIO2; NANOPARTICLES; SI NANOPARTICLES; LITHIUM; ELECTRODES; SILICON; DELITHIATION; NANOSCALE; SURFACE;

D O I：

10.1038/ncomms8872

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Alloy-type anodes such as silicon and tin are gaining popularity in rechargeable Li-ion batteries, but their rate/cycling capabilities should be improved. Here by making yolk-shell nanocomposite of aluminium core (30nm in diameter) and TiO2 shell (similar to 3 nm in thickness), with a tunable interspace, we achieve 10 C charge/discharge rate with reversible capacity exceeding 650mAhg(-1) after 500 cycles, with a 3 mgcm(-2) loading. At 1 C, the capacity is approximately 1,200mAhg(-1) after 500 cycles. Our one-pot synthesis route is simple and industrially scalable. This result may reverse the lagging status of aluminium among high-theoretical-capacity anodes.

引用

页数：7

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