In:
Nature Communications, Springer Science and Business Media LLC, Vol. 14, No. 1 ( 2023-08-08)
Abstract:
The two-electron oxygen reduction reaction in acid is highly attractive to produce H 2 O 2 , a commodity chemical vital in various industry and household scenarios, which is still hindered by the sluggish reaction kinetics. Herein, both density function theory calculation and in-situ characterization demonstrate that in dual-atom CoIn catalyst, O-affinitive In atom triggers the favorable and stable adsorption of hydroxyl, which effectively optimizes the adsorption of OOH on neighboring Co. As a result, the oxygen reduction on Co atoms shifts to two-electron pathway for efficient H 2 O 2 production in acid. The H 2 O 2 partial current density reaches 1.92 mA cm −2 at 0.65 V in the rotating ring-disk electrode test, while the H 2 O 2 production rate is as high as 9.68 mol g −1 h −1 in the three-phase flow cell. Additionally, the CoIn-N-C presents excellent stability during the long-term operation, verifying the practicability of the CoIn-N-C catalyst. This work provides inspiring insights into the rational design of active catalysts for H 2 O 2 production and other catalytic systems.
Type of Medium:
Online Resource
ISSN:
2041-1723
DOI:
10.1038/s41467-023-40467-8
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2023
detail.hit.zdb_id:
2553671-0
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