A Polyvinyl Alcohol-Based Ion-Solvating Membrane with Non-Precious Metal Catalysts for Advanced Water Electrolysis DOI

Guoxiong Deng,

Yiwen Liao,

Yakai Lin

et al.

Published: Jan. 1, 2024

Language: Английский

Molybdenum-Doped Tungsten Nitride Coated with Carbon Shell and Cobalt Hydroxide Nanosheets for Efficient Alkaline Hydrogen Evolution Reaction DOI
Xiangrui Kong,

Tianhua Hao,

Cuncai Lv

et al.

Published: Jan. 1, 2024

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Language: Английский

Citations

0
Unconventional hcp/fcc Nickel Heteronanocrystal with Asymmetric Convex Sites Boosts Hydrogen Oxidation DOI
Hairui Pan,

Zhuo‐Qi Shi,

Xiaozhi Liu

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(39)

Published: July 2, 2024

Abstract Developing non‐platinum group metal catalysts for the sluggish hydrogen oxidation reaction (HOR) is critical alkaline fuel cells. To date, Ni‐based materials are most promising candidates but still suffer from insufficient performance. Herein, we report an unconventional hcp/fcc Ni (u‐ Ni) heteronanocrystal with multiple epitaxial heterointerfaces and coherent twin boundaries, generating rugged surfaces plenty of asymmetric convex sites. Systematic analyses discover that such sites enable adsorption *H in unusual bridge positions weakened binding energy, circumventing over‐strong on traditional hollow positions, simultaneously stabilizing interfacial 2 O. It thus synergistically optimizes HOR thermodynamic process as well reduces kinetic barrier rate‐determining Volmer step. Consequently, developed u‐ exhibits top‐rank activity a mass 40.6 mA mg −1 (6.3 times higher than fcc control) together superior stability high CO‐tolerance. These results provide paradigm designing high‐performance by shifting state intermediates through configuring surface

Language: Английский

Citations

0
Investigation of C-doped molybdenum disulfide (MoS2) thin films for visible light MSM photodetector application DOI
Indris S. Sianturi, Aljufri Hadju,

Kholik Hidayatullah

et al.

Optical Materials, Journal Year: 2024, Volume and Issue: 159, P. 116449 - 116449

Published: Dec. 4, 2024

Language: Английский

Citations

0
Engineering a Triphasic Co(OH)F/Co–S/CeO2 Nanostructure Interface for Promoting Hydrazine-Assisted Overall Water Splitting DOI
Dianyi Qu,

Shuai Zeng,

Zheng Yang

et al.

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 5, 2024

Synthesizing bifunctional electrocatalysts capable of concurrently accelerating the kinetics both hydrogen evolution reaction (HER) and hydrazine oxidation (HzOR) remains a formidable hurdle with academic research. Herein, nanoneedle-like electrocatalyst triphasic nanointerface, consisting crystalline Co(OH)F, amorphous Co–S, CeO2, was synthesized on nickel foam (NF) (Co(OH)F/Co–S/CeO2/NF) through an integrated hydrothermal–sulfidation–deposition strategy. Co(OH)F/Co–S/CeO2/NF not only possessed abundant active sites but also minimized charge-transfer resistance optimized electron distribution across interfaces, thus significantly kinetics. Then, it demonstrated overpotential 153 mV for HER low potential 80 HzOR at 10 mA cm–2, respectively. Employing as catalytic electrode, impressively cell voltage 0.20 V sufficient to achieve flow cm–2 during hydrazine-assisted overall water splitting. Density functional theory calculations elucidated that superior performance originated from balanced adsorption energy (ΔGH*) process altered rate-limiting step relatively barrier in HzOR. This research offers valuable insights into development sophisticated electrocatalysts, advancing large-scale deployment energy-conserving H2 production technologies.

Language: Английский

Citations

0
A Polyvinyl Alcohol-Based Ion-Solvating Membrane with Non-Precious Metal Catalysts for Advanced Water Electrolysis DOI

Guoxiong Deng,

Yiwen Liao,

Yakai Lin

et al.

Published: Jan. 1, 2024

Language: Английский

Citations

0