NiCoPd Inlaid NiCo-Bimetallene for Efficient Electrocatalytic Methanol Oxidation

Zhao, Long, Wen, Ming, Fang, Hao, Meng, Kexin, Qiu, Xiaoyu, Wu, Qingsheng and Fu, Yong Qing (2022) NiCoPd Inlaid NiCo-Bimetallene for Efficient Electrocatalytic Methanol Oxidation. Inorganic Chemistry, 61 (26). pp. 10211-10219. ISSN 0020-1669

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Pd-based metallenes have attracted great attention recently as newly burgeoning two-dimensional (2D) materials, attributed to their significantly increased active surface areas and intrinsic electrocatalytic activities. Therefore, they could be used as a potential candidate as the high-performance electrocatalyst for methanol oxidation reactions (MORs) in the direct methanol fuel cell. Herein, a new strategy is proposed to fabricate NiCoPd inlaid NiCo-bimetallene (NiCoPd/NiCo-bimetallene) by the structure directing effect of 18-crown-6 ether under an ultrasonic-pulse interface together with the HCHO reduction and atom-diffusion-aging process. NiCoPd ternary-alloys with uniformly dispersed Pd active sites are decorated onto NiCo-bimetallenes, achieving remarkably enhancing the effective utilization of Pd atoms. What is more, the intrinsic activity is enhanced by the “bifunctional mechanism” of NiCo-bimetallene adsorption of intermediate species and increased Pd-active sites. Moreover, the anti-CO poisoning ability is optimized through the “alloying ligand effect” of NiCoPd. Therefore, the NiCoPd/NiCo-bimetallene exhibits excellent mass activity for MOR, which is higher than commercial Pd/C. This work suggests a new way of the Pd-based metallenes catalyst approach to the efficient electrocatalytic MOR.

Item Type: Article
Additional Information: Funding information: This work was financially supported by the National Natural Science Foundation (NSFC Nos: 22171212), the Science and Technology Committee of Shanghai Municipality (21160710300 and 19DZ2271500) by China, and the International Exchange Grant (IEC/NSFC/201078) through Royal Society UK and NSFC.
Subjects: F200 Materials Science
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: John Coen
Date Deposited: 27 Jun 2022 08:05
Last Modified: 18 Jun 2023 08:00

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