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Novel Hybrid Carbon Nanofiber/Highly Branched Graphene Nanosheet for Anode Materials in Lithium-Ion Batteries

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journal contribution
posted on 12.11.2014, 00:00 by Haejune Kim, Xingkang Huang, Xiaoru Guo, Zhenhai Wen, Shumao Cui, Junhong Chen
The novel hybrid carbon nanofiber (CNF)/highly branched graphene nanosheet (HBGN) is synthesized via a simple two-step CVD method and its application as the anode material in a lithium-ion battery (LIB) is demonstrated. The CNFs offer a good electrical conductivity and a robust supporting structure, while the HBGNs provide increased Li storage sites including nanoporous cavities, large surface area, and edges of exposed graphene platelets. The hybrid material showed a reversible capacity of 300 mAh g–1 with excellent cycling stability. Our study provides a new avenue for design and synthesis of carbon–carbon hybrid materials for versatile applications.