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Efficient Electrochemical Reduction of Oxygen Catalyzed by Porous Carbon Containing Trace Amount of Metal Residues
Author(s) -
Feng Xin,
Dong Xiaomei,
Zhang Qingcheng,
Cui Cuixia,
Zhang JingJing,
Chen Zhen,
Wu Changmi,
Jin Huile,
Wang Shun,
Wang Jichang
Publication year - 2018
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201800478
Subject(s) - cobalt , catalysis , carbon fibers , methanol , metal , materials science , electrochemistry , chemical engineering , inorganic chemistry , porosity , chemistry , electrode , composite number , organic chemistry , metallurgy , engineering , composite material
In this study carbon materials with a hierarchical pore structure have been fabricated through a scalable and template free solvothermal method in the presence of metal catalysts, where the presence of metal catalysts was found to be essential for the initial polymerization process. The as‐prepared carbon contained trace amounts of metal residues and exhibited highly efficient catalytic activity toward the oxygen reduction reaction (ORR). Among all the metal catalysts studied, cobalt containing porous carbon exhibited the highest ORR electrocatalytic activity with great tolerance to methanol crossover and excellent long‐term cycling stability, outperforming the commercial 30 % ( w / w ) Pt/C catalysts. The great performance may be contributed to the unique porous structure, the large specific surface area of cobalt‐doped carbon and chemical activity of cobalt. The result provides useful guidance for the development of carbon‐based electrocatalysts.