Enhancing Electrocatalytic Production of H2O2 by Modulating Coordination Environment of Cobalt Center

被引:8
作者
Wu, Guoling [1 ,2 ,3 ,4 ]
Yang, Zhongjie [2 ,3 ,4 ]
Zhang, Tianlin [4 ]
Sun, Yali [2 ,3 ,4 ]
Long, Chang [5 ]
Song, Yaru [1 ]
Lei, Shengbin [1 ]
Tang, Zhiyong [2 ,3 ,4 ]
机构
[1] Tianjin Univ, Sch Sci, Dept Chem, Tianjin Key Lab Mol Optoelect, Tianjin 300072, Peoples R China
[2] CAS Key Lab Nanosyst & Hierarch Fabricat & CAS Ct, Beijing 100190, Peoples R China
[3] CAS Ctr Excellence Nanosci Natl Ctr Nanosci & Tec, Beijing 100190, Peoples R China
[4] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[5] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150080, Peoples R China
基金
中国国家自然科学基金;
关键词
catalyst; coordination environment; electrocatalytic; electrocatalytic oxygen reduction; H2O2; SELECTIVE OXYGEN REDUCTION; HYDROGEN-PEROXIDE; O-2; REDUCTION; NITROGEN; FRAMEWORKS; CATALYSTS; CARBON; SITES;
D O I
10.1002/bkcs.12348
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
As an environmentally friendly oxidant, H2O2 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 H2O2 is not sufficiently clear. Herein, we explore the effect of the cobalt (Co) coordination environment on the electrochemical production of H2O2. The detailed investigation on N-, P-, and S-coordinated Co catalysts (Co1N1N3, Co1P1N3, and Co1S1N3) demonstrates that changing the coordination environment evidently affects the H2O2 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 H2O2 via electrocatalytic oxygen reduction.
引用
收藏
页码:1155 / 1160
页数:6
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