Synthesis of Nitrogen-Doped MnO/Graphene Nanosheets Hybrid Material for Lithium Ion Batteries

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• 作者：Kejun Zhang ; Pengxian Han ; Lin Gu ; Lixue Zhang ; Zhihong Liu ; Qingshan Kong ; Chuanjian Zhang ; Shanmu Dong ; Zhongyi Zhang ; Jianhua Yao ; Hongxia Xu ; Guanglei Cui ; Liquan Chen
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2012
• 出版时间：February 22, 2012
• 年：2012
• 卷：4
• 期：2
• 页码：658-664
• 全文大小：413K
• 年卷期：v.4,no.2(February 22, 2012)
• ISSN：1944-8252

文摘

Nitrogen-doped MnO/graphene nanosheets (N-MnO/GNS) hybrid material was synthesized by a simple hydrothermal method followed by ammonia annealing. The samples were systematically investigated by X-ray diffraction analysis, Raman spectroscopy, X-ray photoelectron spectroscopy, transmission electron microscopy, and atomic force microscopy. N-doped MnO (N-MnO) nanoparticles were homogenously anchored on the thin layers of N-doped GNS (N-GNS) to form an efficient electronic/ionic mixed conducting network. This nanostructured hybrid exhibited a reversible electrochemical lithium storage capacity as high as 772 mAh g^鈥? at 100 mA g^鈥? after 90 cycles, and an excellent rate capability of 202 mA h g^鈥? at a high current density of 5 A g^鈥?. It is expected that N-MnO/GNS hybrid could be a promising candidate material as a high capacity anode for lithium ion batteries.

Keywords:

nitrogen-doped MnO; nitrogen-doped graphene nanosheets; surface defects; anode material; lithium ion batteries