Dendrite‐Free Sodium‐Metal Anodes for High‐Energy Sodium‐Metal Batteries

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  • Bing Sun
    Centre for Clean Energy Technology University of Technology Sydney Broadway Sydney NSW 2007 Australia
  • Peng Li
    College of Materials Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing Jiangsu 210016 China
  • Jinqiang Zhang
    Centre for Clean Energy Technology University of Technology Sydney Broadway Sydney NSW 2007 Australia
  • Dan Wang
    State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences 1 BeiErjie Zhong Guancun Beijing 100190 China
  • Paul Munroe
    School of Materials Science and Engineering The University of New South Wales Sydney NSW 2052 Australia
  • Chengyin Wang
    College of Chemistry and Chemical Engineering Yangzhou University 180 Si‐Wang‐Ting Road Yangzhou 225002 China
  • Peter H. L. Notten
    Centre for Clean Energy Technology University of Technology Sydney Broadway Sydney NSW 2007 Australia
  • Guoxiu Wang
    Centre for Clean Energy Technology University of Technology Sydney Broadway Sydney NSW 2007 Australia

書誌事項

公開日
2018-05-31
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#am
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1002/adma.201801334
公開者
Wiley

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説明

<jats:title>Abstract</jats:title><jats:p>Sodium (Na) metal is one of the most promising electrode materials for next‐generation low‐cost rechargeable batteries. However, the challenges caused by dendrite growth on Na metal anodes restrict practical applications of rechargeable Na metal batteries. Herein, a nitrogen and sulfur co‐doped carbon nanotube (NSCNT) paper is used as the interlayer to control Na nucleation behavior and suppress the Na dendrite growth. The N‐ and S‐containing functional groups on the carbon nanotubes induce the NSCNTs to be highly “sodiophilic,” which can guide the initial Na nucleation and direct Na to distribute uniformly on the NSCNT paper. As a result, the Na‐metal‐based anode (Na/NSCNT anode) exhibits a dendrite‐free morphology during repeated Na plating and striping and excellent cycling stability. As a proof of concept, it is also demonstrated that the electrochemical performance of sodium–oxygen (Na–O<jats:sub>2</jats:sub>) batteries using the Na/NSCNT anodes show significantly improved cycling performances compared with Na–O<jats:sub>2</jats:sub> batteries with bare Na metal anodes. This work opens a new avenue for the development of next‐generation high‐energy‐density sodium‐metal batteries.</jats:p>

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