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- Title
Charge Regulation on Hybrid Nanosheet Stereoassembly via Interfacial PO Coupling Enables Efficient Overall Water Splitting.
- Authors
Wu, Kaili; Wang, Xin; Wang, Wenqing; Luo, Yan; Cao, Wei; Cao, Yiyao; Xie, Haijiao; Yan, Yan; Lin, Huijuan; Zhu, Jixin; Rui, Kun
- Abstract
Precise regulation on interfacial electronic coupling is essential to achieve efficient catalysts with tailored electrocatalytic behaviors but remains challenging. Herein, a straightforward topochemical strategy is presented to realize Co‐based heterostructured nanofiber stereoassembled with PO coupled nanosheet (CoHF/PO). By constructing well‐defined metal oxide/phosphide interface, prominent electron redistribution can be established via interfacial PO coupling, which is strongly correlated with the catalytic activities. Density functional theory calculations indicate that the rational interface engineering renders accelerated charge transfer and more importantly, optimized surface adsorption/desorption behaviors, contributing to boosted kinetics for both hydrogen evolution reaction and oxygen evolution reaction. Particularly, CoHF/PO featuring promoted intrinsic activity and accessible active sites exhibits intriguing activity and stability at higher current densities in alkaline media, surpassing commercial Pt/C and Ir/C. This study is expected to demonstrate noteworthy promise of covalent coupling toward modulated electronic environment and interface chemistry for electrocatalytic applications and beyond.
- Subjects
SURFACE chemistry; OXYGEN evolution reactions; DENSITY functional theory; HYDROGEN evolution reactions; CHARGE transfer; METALLIC oxides
- Publication
Advanced Functional Materials, 2023, Vol 33, Issue 27, p1
- ISSN
1616-301X
- Publication type
Article
- DOI
10.1002/adfm.202214075