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Table · dataset · 2026

Dual-Optimized Medium-Entropy Alloy Heterojunction: Synergistically Enhancing Surface Kinetics and Interfacial Mass Transfer for Hydrazine-Assisted Hydrogen Evolution

Listed in ZivaHub and Deakin Research Online and DMU Figshare and HKU DataHub and Swinburne Figshare and DaYta Ya Rona and SUNScholarData and figshare and Loughborough Research Repository and GRANTS Data and UP Research Data Repository — shown once because both records carry DOI 10.1021/acs.inorgchem.6c03596.s009

Description

To address the prominent “bubble shielding” effect at high current densities during hydrazine oxidation reaction (HzOR) as a replacement for the traditional oxygen evolution reaction (OER), this study successfully designed a medium-entropy heterojunction electrocatalyst (Co<sub>0.226</sub>Fe<sub>0.277</sub>Ni<sub>0.209</sub>Mo<sub>0.288</sub>/MoS<sub>2</sub>/CC) featuring discontinuous three-phase contact lines through a topological transformation strategy.

The catalyst exhibits unique superwetting properties (superhydrophilic/superaerophobic), significantly enhancing bubble detachment efficiency during gas evolution. In situ microscopic observations reveal that the bubble sizes released from the surface are markedly smaller than those form Pt/C/CC under current densities of 10 and 100 mA cm<sup>–2</sup>. In addition, the Co<sub>0.226</sub>Fe<sub>0.277</sub>Ni<sub>0.209</sub>Mo<sub>0.288</sub>/MoS<sub>2</sub>/CC achieves dual optimization of reaction kinetics and interfacial mass transfer through the synergistic effect of enhanced N<sub>2</sub>H<sub>4</sub> adsorption capacity and reduced H* desorption energy barrier, achieves outstanding bifunctional performance in hydrazine-assisted water electrolysis system, requiring overpotential of only 28 mV for HER and work-potential of −6 mV for HzOR to reach a current density of 10 mA cm<sup>–2</sup>.

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Furthermore, a membrane-free overall hydrazine splitting (OHzS) system with Co<sub>0.226</sub>Fe<sub>0.277</sub>Ni<sub>0.209</sub>Mo<sub>0.288</sub>/MoS<sub>2</sub>/CC as an electrode requires only 0.247 V to deliver 100 mA cm<sup>–2</sup>. This work provides novel insights for designing efficient and stable gas-evolving electrocatalysts, contributing significantly to advancing sustainable energy conversion technologies.

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Related

Provenance · 11 source records, 130 field assertions
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Deakin Research Onlineoai:figshare.com:article/340374749 d agoJSON v1
DMU Figshareoai:figshare.com:article/340374749 d agoJSON v1
HKU DataHuboai:figshare.com:article/340374749 d agoJSON v1
Swinburne Figshareoai:figshare.com:article/340374749 d agoJSON v1
DaYta Ya Ronaoai:figshare.com:article/340374749 d agoJSON v1
SUNScholarDataoai:figshare.com:article/340374749 d agoJSON v1
figshareoai:figshare.com:article/340374748 d agoJSON v1
Loughborough Research Repositoryoai:figshare.com:article/340374748 d agoJSON v1
GRANTS Dataoai:figshare.com:article/340374748 d agoJSON v1
UP Research Data Repositoryoai:figshare.com:article/340374748 d agoJSON v1
FieldAssertionExtractorEvidence
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