High-rate aluminium yolk-shell nanoparticle anode for Li-ion battery with long cycle life and ultrahigh capacity
Author(s)Li, Sa; Zhao, Yu Cheng; Wang, Chao; Wang, Chang An; Li, Ju; Niu, Jun Jie; So, Kangpyo; ... Show more Show less
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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 (30 nm in diameter) and TiO[subscript 2] shell (~3 nm in thickness), with a tunable interspace, we achieve 10 C charge/discharge rate with reversible capacity exceeding 650 mAh g[superscript −1] after 500 cycles, with a 3 mg cm[superscript −2] loading. At 1 C, the capacity is approximately 1,200 mAh g[superscript −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.
DepartmentMassachusetts Institute of Technology. Department of Materials Science and Engineering; Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Nature Publishing Group
Li, Sa, Junjie Niu, Yu Cheng Zhao, Kang Pyo So, Chao Wang, Chang An Wang, and Ju Li. “High-Rate Aluminium Yolk-Shell Nanoparticle Anode for Li-Ion Battery with Long Cycle Life and Ultrahigh Capacity.” Nat Comms 6 (August 5, 2015): 7872. © 2015 Macmillan Publishers Limited
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