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Issue 22, 2020
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Removing the barrier to water dissociation on single-atom Pt sites decorated with a CoP mesoporous nanosheet array to achieve improved hydrogen evolution

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Abstract

The hydrogen evolution reaction (HER) in alkaline solution has attracted considerable interest, but it is limited by the kinetically sluggish water dissociation step. Herein, we report single-atom Pt immobilized in the lattice of CoP mesoporous nanosheets (MNSs) grown on carbon fiber cloth (CFC) (Ptat–CoP MNSs/CFC) with ultralow Pt loading (0.7 wt% relative to CoP, 5.89 μg cmgeo−2) as a high-performance electrocatalyst for the HER in alkaline solution. Assisted by the strong interaction between Ptat and CoP, water dissociation becomes spontaneous, providing Ptat–CoP MNSs/CFC with a low HER kinetic barrier. Accordingly, Ptat–CoP MNSs/CFC exhibits outstanding HER performance with negligible onset potential, super high catalytic activity, and excellent durability that is even superior to the commercial 20 wt% Pt/C catalyst. Moreover, Ptat–CoP MNSs/CFC exhibits excellent catalytic activity and stability toward seawater electrolysis.

Graphical abstract: Removing the barrier to water dissociation on single-atom Pt sites decorated with a CoP mesoporous nanosheet array to achieve improved hydrogen evolution

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Supplementary files

Article information


Submitted
13 Mar 2020
Accepted
15 May 2020
First published
18 May 2020

J. Mater. Chem. A, 2020,8, 11246-11254
Article type
Paper

Removing the barrier to water dissociation on single-atom Pt sites decorated with a CoP mesoporous nanosheet array to achieve improved hydrogen evolution

S. Ye, W. Xiong, P. Liao, L. Zheng, X. Ren, C. He, Q. Zhang and J. Liu, J. Mater. Chem. A, 2020, 8, 11246
DOI: 10.1039/D0TA02936J

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