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@ARTICLE{Guo:636256,
author = {Guo, Weijia and Wang, Zhan and Zhou, Yangdong and Wang,
Tongde and Zhu, Gaoming and Akhtar, Farid and Koudakan,
Payam Ahmadian and Zhang, Baojing and Jiang, Jiangmin and
Pan, Shuaijun and Feng, Peizhong},
title = {{B}ridged {O}v–{R}u–{O}–{C}o coordination induced by
{C}o$^{2+δ}$ substitution in {C}o/{R}u{O}$_2$ catalysts for
enhanced alkaline hydrogen and oxygen evolution reactions},
journal = {Journal of materials chemistry / A},
volume = {13},
number = {28},
issn = {2050-7488},
address = {London [u.a.]},
publisher = {RSC},
reportid = {PUBDB-2025-03638},
pages = {22414 - 22424},
year = {2025},
abstract = {Tailoring a highly active and stable alkaline
electrocatalyst endowed with an ultra-low electron transfer
energy barrier for hydrogen/oxygen evolution reactions
(HER/OER) has remained elusive to date. Herein, a
defect-rich nanoporous Co$^{2+d}$ -incorporated RuO$_2$
(Co/RuO$_2$) catalyst was proposed that offered low
overpotential and good stability for alkaline HER/OER.
Ov–Ru–O–Co coordination under the electron coupling
constructed by slight anchoring of Co$^{2+d}$ at Ru$^{4+d}$
sites played a pivotal role in optimizing the reaction
energy barrier of the intermediates. Theoretical
calculations suggested that Ov–Ru–O–Co coordination
effectively optimized the primary active site by modulating
the electron structure and position of the d-band center.
This refinement enhanced the adsorption/desorption of
reactive species, facilitating the overall progression of
the catalytic reactions. Consequently, the optimal
Co/RuO$_2$-1/50 catalyst achieved an ultralow overpotential
at 10 mA cm$^{−1}$ , an impressive Tafel slope for both
HER (26 mV, 54 mV dec$^{−1}$ ) and OER (243 mV, 88 mV
dec$^{−1}$ ) and an outstanding stability for over 100 h
for OER. This work offers a practical roadmap for the
development of noble metal-based electrocatalysts that
exhibit high activity/stability for alkaline HER/OER.},
cin = {FS DOOR-User},
ddc = {530},
cid = {$I:(DE-H253)FS_DOOR-User-20241023$},
pnm = {6G3 - PETRA III (DESY) (POF4-6G3) / SWEDEN-DESY -
SWEDEN-DESY Collaboration $(2020_Join2-SWEDEN-DESY)$},
pid = {G:(DE-HGF)POF4-6G3 / $G:(DE-HGF)2020_Join2-SWEDEN-DESY$},
experiment = {EXP:(DE-H253)P-P21.2-20150101},
typ = {PUB:(DE-HGF)16},
doi = {10.1039/D5TA02960K},
url = {https://bib-pubdb1.desy.de/record/636256},
}