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An efficient sewage sludge-derived bi-functional electrocatalyst for oxygen reduction and evolution reaction

Green Chemistry, ISSN: 1463-9270, Vol: 18, Issue: 14, Page: 4004-4011
2016
  • 70
    Citations
  • 0
    Usage
  • 34
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    70
    • Citation Indexes
      70
  • Captures
    34

Article Description

An efficient, low cost, and stable bi-functional electrocatalyst consisting of N, Fe, and S multi-doped nanoporous carbon was produced by a green and facile one-step pyrolysis of sewage sludge under NH conditions. The as-synthesized multi-doped electrocatalyst shows excellent electrocatalytic activities for oxygen reduction reaction (ORR) in both alkaline and acid media, which compares favorably with the commercial 20% Pt/C catalyst. The electrocatalyst also exhibits superior oxygen evolution reaction (OER) performance with favorable stability. The hierarchically porous structure, favorable surface area, and unique N, Fe, and S multi-doped carbon framework stem from the particular composition of sewage sludge and the NH atmosphere is responsible for the excellent catalytic efficiency of the as-synthesized electrocatalyst. This development offers a straightforward environment-compatible route for synthesizing attractive bi-functional electrocatalyst materials as promising candidates for fuel cells directly from a type of pollutant.

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