Construction of a hierarchical NiFe layered double hydroxide with a 3D mesoporous structure as an advanced electrocatalyst for water oxidation†,Inorganic Chemistry Frontiers

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Construction of a hierarchical NiFe layered double hydroxide with a 3D mesoporous structure as an advanced electrocatalyst for water oxidation†
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2018-05-21 00:00:00 , DOI: 10.1039/c8qi00314a
Jiahao Yu _{1,

2,

3,

4} , Fulin Yang _{1,

2,

3,

4} , Gongzhen Cheng _{1,

2,

3,

4} , Wei Luo _{1,

2,

3,

4}

Affiliation

The exploitation of highly active, cost-effective, and stable electrocatalysts toward the oxygen evolution reaction (OER) is essential for the development of various energy conversion and storage systems, such as water splitting and metal–air batteries. In this report, 3D mesoporous NiFe layered double hydroxide (LDH) microclusters with a hierarchical architecture are in situ grown on Ni foam through a facile and cost-effective one-step hydrothermal method by using Ni foam as both a Ni source and support. Thanks to the unique architecture and strong synergistic electronic effect between Ni and Fe, the as-synthesized NiFe LDH exhibits remarkable catalytic OER performance with a small overpotential of 211 mV to achieve a current density of 10 mA cm⁻², which outperforms most of the reported non-noble metal-based catalysts and almost all the documented LDH-based electrocatalysts.

中文翻译：

构造具有3D介孔结构的分层NiFe层状双氢氧化物作为水氧化的高级电催化剂†

利用高活性，具有成本效益的和稳定的电催化剂来进行氧气释放反应（OER），对于开发各种能量转换和存储系统（如分水器和金属空气电池）至关重要。在此报告中，通过使用便捷且经济高效的一步法水热方法，使用泡沫镍作为镍源和载体，在泡沫镍上就地生长了具有分层结构的3D介孔NiFe层状双氢氧化物（LDH）微团簇。由于镍和铁之间独特的结构和强大的协同电子效应，如此合成的NiFe LDH表现出卓越的催化OER性能，具有211 mV的小过电位，可实现10 mA cm ^-2的电流密度，其性能优于大多数已报道的非贵金属基催化剂和几乎所有已记录的基于LDH的电催化剂。

更新日期：2018-05-21

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