Chemistry

Bioinspired trimesic acid anchored electrocatalysts with unique static and dynamic compatibility for enhanced water oxidation

X. Lin, Z. Wang, et al.

Discover the innovative bioinspired approach by Xiaojing Lin and colleagues at China University of Petroleum that enhances the efficiency of layered double hydroxides for the oxygen evolution reaction. With remarkable stability and kinetics improvements, this research unravels how specific chemical interactions lead to superior OER performance!

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Abstract

Layered double hydroxides (LDHs) are promising electrocatalysts for the oxygen evolution reaction (OER), but their stability and kinetics are limited by metal dissolution and lamellar structure ablation. This study introduces a bioinspired strategy using trimesic acid anchors to create sub-size NiFe-LDH nanosheets with enhanced OER performance. Operando spectroscopy and DFT calculations reveal that the superaerophobic surface facilitates O2 bubble release, while C-O-Fe bonding prevents metal dissolution. Uncoordinated carboxylates act as proton ferries, accelerating OER kinetics. This approach offers a pathway to improve OER stability and dynamic performance.

Publisher

Nature Communications

Published On

Oct 23, 2023

Authors

Xiaojing Lin, Zhaojie Wang, Shoufu Cao, Yuying Hu, Siyuan Liu, Xiaodong Chen, Hongyu Chen, Xingheng Zhang, Shuxian Wei, Hui Xu, Zhi Cheng, Qi Hou, Daofeng Sun, Xiaoqing Lu

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