Nitrogen‐Doped Porous Carbon Nanofiber Webs as Anodes for Lithium Ion Batteries with a Superhigh Capacity and Rate Capability
Advanced Materials2012Vol. 24(15), pp. 2047–2050
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Long Qie, Weimin Chen, Zhaohui Wang, Qingguo Shao, Xiang Li, Lixia Yuan, Xianluo Hu, Wuxing Zhang, Yunhui Huang
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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