Zincate Ion Enables M(II)‐Vacancy NiFe Layered Double Hydroxide for Stable Seawater Electrolysis at 3 A cm−2 DOI
Shihang Li, Wei Liu,

Xinlong Guo

и другие.

Small, Год журнала: 2025, Номер unknown

Опубликована: Май 15, 2025

Abstract Seawater electrolysis offers a sustainable route for hydrogen production. Operating at high current densities can improve the energy efficiency but requires anodes that sustain oxygen evolution reaction (OER) activity, selectivity, and stability against negative effects of Cl − . Herein, NiFeZn layered double hydroxide (NiFeZn‐LDH) demonstrates remarkable OER performance, requiring only 220 mV overpotential to achieve 10 mA cm −2 , maintaining 100% selective seawater oxidation 500 h an unprecedented density 3 A with minimal degradation. Through comprehensive characterizations, it is found dissolution amphoteric Zn‐site following formation Zn 2+ vacancies are key excellent activity. The free in electrolyte converts Zn(OH) 4 2− adsorbs onto electrode, facilitating OH nucleophilic attack by disrupting bond network electrochemical interface. Furthermore, steric hindrance suppresses competing adsorption, ensuring selectivity long‐term stability. As result, industrial‐scale electrolyzer NiFeZn‐LDH as anode operates stably over 700 saturated NaCl electrolyte, consuming 4.26 Nm −3 H 2 This work feasibility developing energy‐efficient, highly stable electrolyzers outperform conventional water electrolyzers.

Язык: Английский

CoP@NC nanorod array for efficient alkaline water and alkaline seawater electrolysis DOI
Meng Song, Jinbo Wang, Yufei Xia

и другие.

Journal of Alloys and Compounds, Год журнала: 2025, Номер unknown, С. 179248 - 179248

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

0
Zincate Ion Enables M(II)‐Vacancy NiFe Layered Double Hydroxide for Stable Seawater Electrolysis at 3 A cm−2 DOI
Shihang Li, Wei Liu,

Xinlong Guo

и другие.

Small, Год журнала: 2025, Номер unknown

Опубликована: Май 15, 2025

Abstract Seawater electrolysis offers a sustainable route for hydrogen production. Operating at high current densities can improve the energy efficiency but requires anodes that sustain oxygen evolution reaction (OER) activity, selectivity, and stability against negative effects of Cl − . Herein, NiFeZn layered double hydroxide (NiFeZn‐LDH) demonstrates remarkable OER performance, requiring only 220 mV overpotential to achieve 10 mA cm −2 , maintaining 100% selective seawater oxidation 500 h an unprecedented density 3 A with minimal degradation. Through comprehensive characterizations, it is found dissolution amphoteric Zn‐site following formation Zn 2+ vacancies are key excellent activity. The free in electrolyte converts Zn(OH) 4 2− adsorbs onto electrode, facilitating OH nucleophilic attack by disrupting bond network electrochemical interface. Furthermore, steric hindrance suppresses competing adsorption, ensuring selectivity long‐term stability. As result, industrial‐scale electrolyzer NiFeZn‐LDH as anode operates stably over 700 saturated NaCl electrolyte, consuming 4.26 Nm −3 H 2 This work feasibility developing energy‐efficient, highly stable electrolyzers outperform conventional water electrolyzers.

Язык: Английский

Процитировано

0