The DOI matches its Crossref record; 9 of the 9 references it cites were found in a registry or an index.
Identification of the Origin for Reconstructed Active Sites on Oxyhydroxide for Oxygen Evolution Reaction
Abstract
The regulation of atomic and electronic structures of active sites plays an important role in the rational design of oxygen evolution reaction (OER) catalysts toward electrocatalytic hydrogen generation. However, the precise identification of the active sites for surface reconstruction behavior during OER remains elusive for water‐alkali electrolysis. Herein, irreversible reconstruction behavior accompanied by copper dynamic evolution for cobalt iron layered double hydroxide (CoFe LDH) precatalyst to form CoFeCuOOH active species with high‐valent Co species is reported, identifying the origin of reconstructed active sites through operando UV‐Visible (UV–vis), in situ Raman, and X‐ray absorption fine‐structure (XAFS) spectroscopies. Density functional theory analysis rationalizes this typical electronic structure evolution causing the transfer of intramolecular electrons to form ligand holes, promoting the reconstruction of active sites. Specifically, unambiguous identification of active sites for CoFeCuOOH is explored by in situ 18 O isotope‐labeling differential electrochemical mass spectrometry (DEMS) and supported by theoretical calculation, confirming mechanism switch to oxygen‐vacancy‐site mechanism (OVSM) pathway on lattice oxygen. This work enables to elucidate the vital role of dynamic active‐site generation and the representative contribution of OVSM pathway for efficient OER performance.
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Self-citation
Metadata
- Authors
- Wang, C., Zhai, P., Xia, M., Liu, W., Gao, J., Sun, L., & Hou, J.
- Venue
- Advanced Materials
- Publisher
- Wiley
- Published
- 2022-12-19
- Volume
- 35
- Issue
- 6
- Pages
- e2209307-e2209307
- ISSN
- 0935-9648 (ISSN-L)
- 1521-4095
- OpenAlex
- W4309454234
- Cited by
- 307
- References
- 9
- FWCI
- 11.09
- Type
- journal article
- Language
- en
- Open access
- closed
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- Wang, C., Zhai, P., Xia, M., Liu, W., Gao, J., Sun, L., & Hou, J. (2023). Identification of the Origin for Reconstructed Active Sites on Oxyhydroxide for Oxygen Evolution Reaction. Advanced Materials. https://doi.org/10.1002/adma.202209307
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