Lithium storage in polymerized carbon nitride nanobells

Zhong, D. Y.; Zhang, G. Y.; Liu, S.; Wang, E. G.; Wang, Q.; Li, H.; Huang, X. J.
November 2001
Applied Physics Letters;11/19/2001, Vol. 79 Issue 21, p3500
Academic Journal
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.


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