Nitrogen-doped porous carbon nanofiber webs as anodes for lithium ion batteries with a superhigh capacity and rate capability.

Qie, Long; Chen, Wei-Min; Wang, Zhao-Hui; Shao, Qing-Guo; Li, Xiang; Yuan, Li-Xia; Hu, Xian-Luo; Zhang, Wu-Xing et al. · Adv Mater · 2012

basic_science · Level V

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Abstract

Nitrogen-doped carbon nanofiber webs (CNFWs) with high surface areas are successfully prepared by carbonization-activation of polypyrrole nanofiber webs with KOH. The as-obtained CNFWs exhibit a superhigh reversible capacity of 943 mAh g(-1) at a current density of 2 A g(-1) even after 600 cycles, which is ascribed to the novel porous nanostructure and high-level nitrogen doping.

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