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High-rate sodium ion anodes assisted by N-doped carbon sheets

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Abstract

Well-defined 3D nitrogen-doped porous carbon materials (NPCMs) have been obtained from CQDs and melamine by the self-assembly process, presenting a distinct textural structure with uniform N-doping distribution. The as-prepared NPCMs, as the anode materials for SIBs, display high specify capacity, long-term cyclability and good rate capacity. At 100 mA g−1, the NPCM electrode can reach the first capacity of 225 mA h g−1 (204.7 mA h cm−2) and maintain 241.2 mA h g−1 (219.3 mA h cm−2) after 100 cycles. Even at the current density of 1000 mA g−1, a reversible capacity of 130.2 mA h g−1 (118.9 mA h cm−2) can be retained, which can be attributed to the improved extrinsic defects and electrical conductivity resulting from N-doping.

Graphical abstract: High-rate sodium ion anodes assisted by N-doped carbon sheets

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Publication details

The article was received on 09 Mar 2017, accepted on 21 Apr 2017 and first published on 24 Apr 2017


Article type: Paper
DOI: 10.1039/C7SE00134G
Citation: Sustainable Energy Fuels, 2017, Advance Article
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    High-rate sodium ion anodes assisted by N-doped carbon sheets

    P. Ge, H. Hou, N. Liu, X. Qiu, Q. Zeng, C. Wang, L. Shao and X. Ji, Sustainable Energy Fuels, 2017, Advance Article , DOI: 10.1039/C7SE00134G

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