期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 5, 期 39, 页码 20635-20642出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ta05853e
关键词
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资金
- National Research Foundation of Korea (NRF) - Korea government (MSIP) [NRF-2016R1C1B2010772]
- Inha University WCSL, Korea
A novel dual imprinting method is suggested to synthesize pyridinic N-enriched, hierarchically porous carbon. Rose-like melamine cyanurate (MCA) mesocrystals are prepared by simple self-assembly and utilized as a sacrificial template. The unique morphological and chemical features of the MCA are imprinted in the carbon source during carbonization. Curled graphene-like layers with a high nitrogen content (19.9 at%, especially 8.9 at% of pyridinic N) are interconnected to form a unique red blood cell-shaped morphology with a hierarchical pore structure. The resulting material exhibits an outstanding electrochemical performance (2019 mA h g(-1) at 100 mA g(-1) and 643 mA h g(-1) at 2000 mA g(-1) after 250 cycles) when evaluated as an anode material for lithium ion batteries. Furthermore, this novel imprinting strategy can provide a simple and efficient methodology to produce pyridinic N-enriched, hierarchically porous carbonaceous materials for extensive applications.
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