Do Rh-Hydride Phases Contribute to the Catalytic Activity of Rh Catalysts under Reductive Conditions? DOI
Kexiang Zhang, Lin Chen, Zhi‐Pan Liu

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 12, 2024

Rh-hydride phases were believed to be key causes of the exceptional catalytic ability Rh catalysts under H2 reductive conditions. Here, we utilize large-scale machine-learning-based global optimization explore millions bulk, surface, and nanoparticle structures in contact with H2, which rules out presence subsurface/interstitial H as thermodynamically stable ambient Instead, an Rh–H affinity is identified for surface atoms nanoparticles that can accommodate a high concentration adsorbed H, ratio reaching ∼2.5, featuring six-H-coordinated Rh, [RhH6]. Such [RhH6] species forming at edged sites are found intermediates electrochemical hydrogen evolution reaction (HER) on Rh. Guided by theory, our synthesized concave nanocubes density achieve Tafel slope 28.4 mV dec–1 low overpotential 36.1 jECSA = 1 mA cm–2, outperforms commercial Pt/C other morphologies catalysts. Our results clarify active phase nanosystems guide catalyst design precise morphology control nanocatalysts

Language: Английский

Engineering structure-activity relationships in rhodium-based catalysts for Electrocatalysis DOI
Juan Bai, Jun Mei, Ting Liao

et al.

Coordination Chemistry Reviews, Journal Year: 2025, Volume and Issue: 528, P. 216418 - 216418

Published: Jan. 4, 2025

Language: Английский

Citations

0
Ultrastable Ti@Ir core–shell catalyst with low iridium loading for water electrolysis at industrial-level current density DOI

Jia-Hao Yang,

Zhaoping Shi, Yibo Wang

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160118 - 160118

Published: Feb. 1, 2025

Language: Английский

Citations

0
Semi-ionic C-F optimizes metal-support interaction of Rh/F, N-codoped porous carbon for efficient all-pH hydrogen production DOI
Jian Guo, Rui Ding, Yi Li

et al.

Nano Energy, Journal Year: 2025, Volume and Issue: unknown, P. 110975 - 110975

Published: April 1, 2025

Language: Английский

Citations

0
Do Rh-Hydride Phases Contribute to the Catalytic Activity of Rh Catalysts under Reductive Conditions? DOI
Kexiang Zhang, Lin Chen, Zhi‐Pan Liu

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 12, 2024

Rh-hydride phases were believed to be key causes of the exceptional catalytic ability Rh catalysts under H2 reductive conditions. Here, we utilize large-scale machine-learning-based global optimization explore millions bulk, surface, and nanoparticle structures in contact with H2, which rules out presence subsurface/interstitial H as thermodynamically stable ambient Instead, an Rh–H affinity is identified for surface atoms nanoparticles that can accommodate a high concentration adsorbed H, ratio reaching ∼2.5, featuring six-H-coordinated Rh, [RhH6]. Such [RhH6] species forming at edged sites are found intermediates electrochemical hydrogen evolution reaction (HER) on Rh. Guided by theory, our synthesized concave nanocubes density achieve Tafel slope 28.4 mV dec–1 low overpotential 36.1 jECSA = 1 mA cm–2, outperforms commercial Pt/C other morphologies catalysts. Our results clarify active phase nanosystems guide catalyst design precise morphology control nanocatalysts

Language: Английский

Citations

0