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Lithium storage in polymerized carbon nitride nanobells

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7 Author(s)
Zhong, D.Y. ; State Key Laboratory for Surface Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100080, China ; Zhang, G.Y. ; Liu, S. ; Wang, E.G.
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Polymerized carbon nitride nanobells (CNNBs) have been intercalated by a large amount of Li ions using an electrochemical method. Li nanocrystals are observed on the inside surface of CNNB walls, which is direct evidence that a Li nanocrystal can exist at the micropore structure at a heavy intercalating level. Graphene layers are expanded and become partly disordered by Li intercalation, while after deintercalation, they are reordered to a certain degree, and Li nanocrystals disappear. The samples show a reversible Li storage capacity of 480 mAhg-1, much higher than 330 mAhg-1 of commercial carbon materials used for Li ion batteries. © 2001 American Institute of Physics.

Published in:

Applied Physics Letters  (Volume:79 ,  Issue: 21 )

Date of Publication:

Nov 2001

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