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Improving ORR activity of carbon nanotubes by hydrothermal carbon deposition method

         

摘要

Nitrogen doped carbons are an important family of materials with ideal activity for oxygen reduction reaction (ORR).It is always interesting to search functional carbons with high heteroatom contents and desirable structure for ORR.Within this study,the surface modification of carbon nanotubes (CNTs) via hydrothermal carbonization (HTC) technique in the presence of glucose and urea was reported,where the surface of CNTs is successfully coated by nitrogen containing hydrothermal carbon layers.The resulting composite combines both advantages of the outstanding electrical conductivity of CNTs and the effective ORR active sites provided by doped nitrogen in the HTC carbon layers.By controlling the ratio of glucose and urea,the nitrogen contents coated on the surface of CNTs can reach up to 1.7 wt%.The resulting materials show outstanding electrochemical activity towards ORR in alkaline electrolyte,making it one of the valuable metal-free electrode materials and a competent alternative to the state-of-the-art Pt/C catalyst.

著录项

  • 来源
    《天然气化学(英文版)》 |2017年第4期|712-718|共7页
  • 作者单位

    College of Chemistry, Fuzhou University, Qishan Campus, Fuzhou 350116, Fujian, China;

    College of Chemistry, Fuzhou University, Qishan Campus, Fuzhou 350116, Fujian, China;

    College of Chemistry, Fuzhou University, Qishan Campus, Fuzhou 350116, Fujian, China;

    College of Chemistry, Fuzhou University, Qishan Campus, Fuzhou 350116, Fujian, China;

    College of Chemistry, Fuzhou University, Qishan Campus, Fuzhou 350116, Fujian, China;

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  • 正文语种 eng
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