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Enhancing Electrocatalytic Production of H 2 O 2 by Modulating Coordination Environment of Cobalt Center
Author(s) -
Wu Guoling,
Yang Zhongjie,
Zhang Tianlin,
Sun Yali,
Long Chang,
Song Yaru,
Lei Shengbin,
Tang Zhiyong
Publication year - 2021
Publication title -
bulletin of the korean chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.237
H-Index - 59
ISSN - 1229-5949
DOI - 10.1002/bkcs.12348
Subject(s) - cobalt , catalysis , chemistry , electrochemistry , oxygen , selectivity , metal , anthraquinone , inorganic chemistry , electrode , organic chemistry
As an environmentally friendly oxidant, H 2 O 2 is widely utilized in various fields; however, its production methods remain limited to the chemical anthraquinone process. Alternatively, electrocatalytic oxygen reduction possesses numerous notable advantages (e.g., cost‐effectiveness, small‐scale, and distributed nature). As electrocatalytic oxygen reduction has been widely investigated in the fields of fuel cells and metal‐air batteries, the mechanism of the 2e − ‐ORR pathway for producing H 2 O 2 is not sufficiently clear. Herein, we explore the effect of the cobalt (Co) coordination environment on the electrochemical production of H 2 O 2 . The detailed investigation on N‐, P‐, and S‐coordinated Co catalysts (Co 1 N 1 N 3 , Co 1 P 1 N 3 , and Co 1 S 1 N 3 ) demonstrates that changing the coordination environment evidently affects the H 2 O 2 selectivity, and the S‐coordinated Co exhibits the best catalytic performance. This finding would lead to the design and selection of catalysts at atomic level for producing H 2 O 2 via electrocatalytic oxygen reduction.