Thursday, July 31, 2014

Novel design of ultra-fast Si anodes for Li-ion batteries: crystalline Si@amorphous Si encapsulating hard carbon




Nanoscale , 2014, Advance Article

DOI: 10.1039/C4NR02394C, Paper

Chanhoon Kim, Minseong Ko, Seungmin Yoo, Sujong Chae, Sinho Choi, Eun-Ho Lee, Seunghee Ko, Sang-Young Lee, Jaephil Cho, Soojin Park

Nanocrystalline Si (c-Si) dispersed in amorphous Si (a-Si) encapsulating hard carbon (HC) has been synthesized as a new anode material for next generation lithium-ion batteries. An excellent cycle retention of 80% was exhibited for a HC@c-Si@a-Si/LiCoO2 full cell after 160 cycles at 1 C discharge/charge rate.

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