title: A Fe/Fe3O4/N-carbon composite with hierarchical porous structure and in situ formed N-doped graphene-like layers for high-performance lithium ion batteries.
abstract: A Fe/Fe3O4/N-carbon composite consisting of a porous carbon matrix containing a highly conductive N-doped graphene-like network and Fe/Fe3O4 nanoparticles was prepared. The porous carbon has a hierarchical structure which is inherited from rice husk and the N-doped graphene-like network formed in situ. When used as an anode material for lithium batteries, the composite delivered a reversible capacity of approximately 610 mA h g(-1) at a current density of 200 mA g(-1) even after 100 cycles, due to the synergism between the unique hierarchical porous structures, highly electrically conductive N-doped graphene-like networks and nanosized particles of Fe/Fe3O4. This work provides a simple approach to prepare N-doped porous carbon activated nanoparticle composites which could be used to improve the electrochemical performance of lithium ion batteries.
authors: State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China. smzhu@sjtu.edu.cn.
authors: Yao
authors: Y
authors: Li
authors: Qing
authors: Q
authors: Meng
authors: Shen-min
authors: SM
authors: Zhu
authors: Zeng-hui
authors: ZH
authors: Sun
authors: Hao
authors: H
authors: Yang
authors: Zhi-xin
authors: ZX
authors: Chen
authors: Cheng-ling
authors: CL
authors: Zhu
authors: Zai-ping
authors: ZP
authors: Guo
authors: Di
authors: D
authors: Zhang