Electrochemical hydrogen and oxygen evolution reactions from a cobalt-porphyrin-based covalent organic polymer

[Display omitted] Covalent organic polymers have attracted much attention due to their high specific surface area, superlative porosity, and diversity in electronic structure. Herein, a novel porous cobalt-porphyrin-based covalent organic polymer (CoCOP) is fabricated through the Schiff-base condens...

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Bibliographic Details
Published in:Journal of colloid and interface science 2020-11, Vol.579, p.598-606
Main Authors: Wang, Aijian, Cheng, Laixiang, Zhao, Wei, Shen, Xiaoliang, Zhu, Weihua
Format: Article
Language:English
Subjects:
Covalent organic polymer
Hydrogen evolution reaction
Oxygen evolution reaction
Porphyrin
Synergistic effect
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Summary:[Display omitted] Covalent organic polymers have attracted much attention due to their high specific surface area, superlative porosity, and diversity in electronic structure. Herein, a novel porous cobalt-porphyrin-based covalent organic polymer (CoCOP) is fabricated through the Schiff-base condensation reaction, which is used as a difunctional electrocatalyst for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). The CoCOP possesses a high surface area and strong synergistic effect between the cobalt-porphyrins and the CN groups, resulting in efficient HER and OER performances. The CoCOP required relatively low overpotentials for both HER (121 mV to reach 1.0 mA cm−2 and 310 mV to reach 10 mA cm−2) and OER (166 mV to reach 1.0 mA cm−2 and 350 mV to reach 10 mA cm−2) in alkaline media. This work may provide a new idea for the design of non-noble metal-based coordination polymers with excellent structure and high electrocatalytic performance.
ISSN:0021-9797
1095-7103
DOI:10.1016/j.jcis.2020.06.109