Hollow Nanotubes of N‐Doped Carbon on CoS |
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| Authors: | Dr Yuming Chen Dr Xiaoyan Li Dr Kyusung Park Prof Limin Zhou Prof Haitao Huang Prof Yiu‐Wing Mai Prof John B Goodenough |
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| Institution: | 1. Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, China;2. Texas Materials Institute and Materials Science and Engineering Program, The University of Texas at Austin, Austin, TX, USA;3. Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hong Kong, China;4. Centre for Advanced Materials Technology (CAMT), School of Aerospace, Mechanical and Mechatronics Engineering J07, The University of Sydney, NSW, Australia |
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| Abstract: | Low‐cost, single‐step synthesis of hollow nanotubes of N‐doped carbon deposited on CoS is enabled by the simultaneous use of three functionalities of polyacrylonitrite (PAN) nanofibers: 1) a substrate for loading active materials, 2) a sacrificial template for creating hollow tubular structures, and 3) a precursor for in situ nitrogen doping. The N‐doped carbon in hollow tubes of CoS provides a high‐capacity anode of long cycle life for a rechargeable Li‐ion or Na‐ion battery cell that undergoes the conversion reaction 2 A++2 e?+CoS →Co+A2S with A=Li or Na. |
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| Keywords: | anode materials batteries cobalt N-doped carbon nanotubes |
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