Enhanced Water Splitting Electrocatalysis with Heterointerfacial Cobalt Phosphide In Situ Supported on a Cellulose-Derived Carbon Aerogel DOI

Taoyi Shen,

Xiang Chen,

Zhongce Hu

et al.

Langmuir, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 25, 2024

The active site density, intrinsic activity, and supporting substrate of cobalt phosphide catalysts are vital to their performance in alkaline water electrolysis. In this work, a CoP/Co2P loaded on cellulose nanofiber-derived carbon aerogels (CP/CCAs) bifunctional electrocatalyst with three-dimensional network heterostructure is illustrated through sequential facile hydrothermal, freeze-drying, phosphorylation processes. derived from nanofibers reveals specific surface area 183.41 m2/g, greatly enriching the sites facilitating electron mass transportation. Besides, interactions between heterogeneous structure modulate electronic enhance activity catalysts. Benefiting these advantages, CP/CCAs-2 demonstrates superior oxygen evolution reaction (η10 mA cm–2 = 277 mV) over benchmark RuO2 moderate hydrogen 63 mV). Density functional theory calculations further reveal that coupling cellulose-derived promotes adsorption activates H–O bond. As result, electrolyzer assembled both as cathode an anode shows low cell voltage 1.59 V at current density 10 good stability. This work provides strategy for electrocatalysts composited green carriers overall splitting.

Language: Английский

Nitrogen-doped carbon nanotube-coated cobalt and cobalt nitride heterojunction hierarchical structure for hydrogen evolution at full pH DOI
Yu Wang,

Yaxiao Cui,

Xueyi Zhao

et al.

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: unknown, P. 177296 - 177296

Published: Oct. 1, 2024

Language: Английский

Citations

0
Enhanced Water Splitting Electrocatalysis with Heterointerfacial Cobalt Phosphide In Situ Supported on a Cellulose-Derived Carbon Aerogel DOI

Taoyi Shen,

Xiang Chen,

Zhongce Hu

et al.

Langmuir, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 25, 2024

The active site density, intrinsic activity, and supporting substrate of cobalt phosphide catalysts are vital to their performance in alkaline water electrolysis. In this work, a CoP/Co2P loaded on cellulose nanofiber-derived carbon aerogels (CP/CCAs) bifunctional electrocatalyst with three-dimensional network heterostructure is illustrated through sequential facile hydrothermal, freeze-drying, phosphorylation processes. derived from nanofibers reveals specific surface area 183.41 m2/g, greatly enriching the sites facilitating electron mass transportation. Besides, interactions between heterogeneous structure modulate electronic enhance activity catalysts. Benefiting these advantages, CP/CCAs-2 demonstrates superior oxygen evolution reaction (η10 mA cm–2 = 277 mV) over benchmark RuO2 moderate hydrogen 63 mV). Density functional theory calculations further reveal that coupling cellulose-derived promotes adsorption activates H–O bond. As result, electrolyzer assembled both as cathode an anode shows low cell voltage 1.59 V at current density 10 good stability. This work provides strategy for electrocatalysts composited green carriers overall splitting.

Language: Английский

Citations

0