期刊
NATURE COMMUNICATIONS
卷 6, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms8872
关键词
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资金
- NSF [DMR-1120901]
- National Natural Science Foundation of China (NSFC) [51221291, 51172119]
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.
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