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- Title
Hydrothermal Synthesis of Metal-Polyphenol Coordination Crystals and Their Derived Metal/N-doped Carbon Composites for Oxygen Electrocatalysis.
- Authors
Wei, Jing; Liang, Yan; Hu, Yaoxin; Kong, Biao; Zhang, Jin; Gu, Qinfen; Tong, Yuping; Wang, Xianbiao; Jiang, San Ping; Wang, Huanting
- Abstract
Cobalt (or iron)-polyphenol coordination polymers with crystalline frameworks are synthesized for the first time. The crystalline framework is formed by the assembly of metal ions and polyphenol followed by oxidative self-polymerization of the organic ligands (polyphenol) during hydrothermal treatment in alkaline condition. As a result, such coordination crystals are even partly stable in strong acid (such as 2 m HCl). The metal (Co or Fe)-natural abundant polyphenol (tannin) coordination crystals are a renewable source for the fabrication of metal/carbon composites as a nonprecious-metal catalyst, which show high catalytic performance for both oxygen reduction reaction and oxygen evolution reaction. Such excellent performance makes metal-polyphenol coordination crystals an efficient precursor to fabricate low-cost catalysts for the large-scale application of fuel cells and metal-air batteries.
- Subjects
COORDINATION compounds; CHEMICAL synthesis; POLYPHENOLS; ELECTROCATALYSIS; METAL ions; POLYMERIZATION; CATALYSTS; FUEL cells
- Publication
Angewandte Chemie, 2016, Vol 128, Issue 40, p12658
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201606327