• 文献标题:   Nitrogen-doped carbon nanotubes/reduced graphene oxide nanosheet hybrids towards enhanced cathodic oxygen reduction and power generation of microbial fuel cells
  • 文献类型:   Article
  • 作  者:   DU Y, MA FX, XU CY, YU J, LI D, FENG YJ, ZHEN L
  • 作者关键词:   electrocatalysi, oxygen reduction reaction, carbon nanomaterial, microbial fuel cell
  • 出版物名称:   NANO ENERGY
  • ISSN:   2211-2855 EI 2211-3282
  • 通讯作者地址:   Harbin Inst Technol Shenzhen
  • 被引频次:   14
  • DOI:   10.1016/j.nanoen.2019.05.001
  • 出版年:   2019

▎ 摘  要

A microbial fuel cell (MFC) is a bio-electrochemical device that convert the chemical energy to electrical energy by the oxidation of microorganisms at bioanode, while its powder generation is largely depending on the activity and durability of cathode catalysts. In this work, we report the design and synthesis of N-doped carbon nanotubes/reduced graphene oxide (rGO) nanosheet hybrids with mixed-dimensional characteristics as high-performance oxygen reduction reaction catalyst for cost-saving MFCs. Co-glycolate nanoparticles uniformly coated on rGO nanosheets are reduced to Co nanoparticles, acting as catalysts for the catalyst mediated growth of carbon nanotubes with abundant metal-nitrogen-carbon active sites. The half-wave potential of hybrid electrocatalyst are 0.859 V (vs RHE), comparable to that of benchmark Pt/C. A maximum power density of 1329 mW cm(-2), 1.37 times higher than that of commercial Pt/C catalyst, is achieved in single-chamber MFCs using optimized hybrid electrocatalysts.