Ni3N@Ni juncture layer enabled performance enhanced electrocatalytic water oxidation

Yu, Wei; Liu, Taolue; Xu, Ning; Ding, Xiangdong; Gao, Yan

doi:10.1016/j.jelechem.2023.117470

Cited by 2 publications

(1 citation statement)

References 39 publications

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“…The two peaks of Ni 2p 3/2 in Ni/V 2 O 3 ‐300 are located at 855.87 and 856.65 eV, corresponding to Ni 2+ and Ni 3+ , respectively 45,46 . When the reduction temperature exceeds 300°C, a new peak appears at 853.24 eV for Ni 2p 3/2 , corresponding to metallic Ni 0 47,48 . By analyzing the XPS peak area of the metal elements, it was found that as the reduction temperature increased from 300 to 700°C, the proportion of Ni 0 increased from 0% to 24%, while the proportion of Ni 3+ decreased from 54% to 18% (Figure S15).…”

Section: Resultsmentioning

confidence: 99%

Enhancing deuterium/hydrogen evolution performance through synergistic effects of Ni and V₂O₃

Li,

Xu,

Sheng

et al. 2023

AIChE Journal

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Compared to the hydrogen evolution reaction (HER), the deuterium evolution reaction (DER) has slower kinetics that causes unsatisfactory performance of conventional HER catalysts in DER. Herein, we report a Ni/V2O3‐500 catalyst with nanosheet morphology that shows excellent performance in both alkaline DER and HER with ultralow overpotential of 64 mV (in 1 M NaOD) and 32 mV (in 1 M NaOH) at 10 mA cm−2. The activity remains stable after accelerated durability test and 1000 h of chronopotentiometric test at 500 mA cm−2. The high performance is attributed to uniform dispersion of Ni nanoparticles and synergistic effects between Ni and V2O3. Density functional theory modeling demonstrates that the synergistic effect optimizes the adsorption of H*/D* intermediate, promoting the reaction rate. This study provides valuable insights into metal‐support interactions in electrocatalysis which facilitates the development of superior DER/HER catalysts. The Ni/V2O3‐500 shows great potential for industrial applications.

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Section: Resultsmentioning

confidence: 99%

Enhancing deuterium/hydrogen evolution performance through synergistic effects of Ni and V₂O₃

Li,

Xu,

Sheng

et al. 2023

AIChE Journal

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Oxygen vacancy and heterointerface engineering of Ni3Fe/NiFe2O4 @N-GTs oxygen evolution reaction electrocatalyst for water splitting

Zou,

Song,

Cui

et al. 2024

Diamond and Related Materials

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Ni3N@Ni juncture layer enabled performance enhanced electrocatalytic water oxidation

Cited by 2 publications

References 39 publications

Enhancing deuterium/hydrogen evolution performance through synergistic effects of Ni and V₂O₃

Enhancing deuterium/hydrogen evolution performance through synergistic effects of Ni and V₂O₃

Oxygen vacancy and heterointerface engineering of Ni3Fe/NiFe2O4 @N-GTs oxygen evolution reaction electrocatalyst for water splitting

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Ni3N@Ni juncture layer enabled performance enhanced electrocatalytic water oxidation

Cited by 2 publications

References 39 publications

Enhancing deuterium/hydrogen evolution performance through synergistic effects of Ni and V2O3

Enhancing deuterium/hydrogen evolution performance through synergistic effects of Ni and V2O3

Oxygen vacancy and heterointerface engineering of Ni3Fe/NiFe2O4 @N-GTs oxygen evolution reaction electrocatalyst for water splitting

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Enhancing deuterium/hydrogen evolution performance through synergistic effects of Ni and V₂O₃

Enhancing deuterium/hydrogen evolution performance through synergistic effects of Ni and V₂O₃