Manipulating anion intercalation into layered double hydroxide for alkaline seawater oxidation at high current density

被引：1

作者：

Wu, Yuewen ^{[1
]}

Chen, Mingpeng ^{[1
]}

Sun, Huachuan ^{[1
]}

Na, Guohao ^{[1
]}

Li, Dequan ^{[1
]}

Wang, Boxue ^{[1
]}

Chen, Yun ^{[1
]}

Zhou, Tong ^{[1
]}

Qiu, Guoyang ^{[1
]}

Zhao, Jianhong ^{[1
]}

Zhang, Yumin ^{[1
]}

Zhang, Jin ^{[1
]}

Liu, Feng ^{[2
]}

Cui, Hao ^{[2
]}

Liu, Qingju ^{[1
]}

机构：

[1] Yunnan Univ, Natl Ctr Int Res Photoelect & Energy Mat, Sch Mat & Energy, Yunnan Key Lab Micro Nano Mat & Technol, Kunming 650091, Peoples R China

[2] Yunnan Precious Met Lab Co Ltd, Kunming 650106, Peoples R China

来源：

CATALYSIS SCIENCE & TECHNOLOGY | 2024年 / 14卷 / 18期

基金：

中国国家自然科学基金;

关键词：

Alkalinity - Intercalation - Iron alloys - Mendelevium - Potassium hydroxide;

D O I：

10.1039/d4cy00842a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work, we propose a convenient strategy to manipulate anion intercalation into layered double hydroxide. The obtained NiFe LDH-Cl- electrode shows outstanding OER performance with both low overpotentials and high stability in alkaline seawater at high current density. Ultra-low overpotentials of 255 mV and 350 mV are required in 1 M KOH and alkaline seawater at a current density of 200 mA cm-2. In addition, NiFe LDH-Cl- can stably operate at 200 mA cm-2 for 100 h. In situ Raman studies reveal that the active gamma-NiOOH is generated on NiFe LDH-Cl- at a low potential by surface reconstruction, and Cl- intercalation helps optimize the peak area ratio of Eg and A1g, which can be favorable for the alkaline seawater OER. A convenient strategy to manipulate anion intercalation into layered double hydroxide is proposed for efficient alkaline seawater oxidation.

引用

页码：5206 / 5210

页数：5

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