Recent Progress on Layered Double Hydroxides and Their Derivatives for Electrocatalytic Water Splitting

被引:649
作者
Wang, Yanyong [1 ]
Yan, Dafeng [1 ]
El Hankari, Samir [1 ]
Zou, Yuqin [1 ]
Wang, Shuangyin [1 ]
机构
[1] Hunan Univ, Coll Chem & Chem Engn, Prov Hunan Key Lab Graphene Mat & Devices, State Key Lab Chem Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China
基金
中国国家自然科学基金;
关键词
electrocatalysts; hydrogen evolution reaction; layered double hydroxides; oxygen evolution reaction; water splitting; EFFICIENT OXYGEN-EVOLUTION; ACTIVE SPECIES GENERATION; NICKEL-IRON NITRIDE; HIGHLY-EFFICIENT; HYDROGEN EVOLUTION; ULTRATHIN NANOSHEETS; BIFUNCTIONAL ELECTROCATALYSTS; ENERGY-CONVERSION; NANOWIRE ARRAYS; EDGE SITES;
D O I
10.1002/advs.201800064
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Layered double hydroxide (LDH)-based materials have attracted widespread attention in various applications due to their unique layered structure with high specific surface area and unique electron distribution, resulting in a good electrocatalytic performance. Moreover, the existence of multiple metal cations invests a flexible tunability in the host layers; the unique intercalation characteristics lead to flexible ion exchange and exfoliation. Thus, their electrocatalytic performance can be tuned by regulating the morphology, composition, intercalation ion, and exfoliation. However, the poor conductivity limits their electrocatalytic performance, which therefore has motivated researchers to combine them with conductive materials to improve their electrocatalytic performance. Another factor hampering their electrocatalytic activity is their large lateral size and the bulk thickness of LDHs. Introducing defects and tuning electronic structure in LDH-based materials are considered to be effective strategies to increase the number of active sites and enhance their intrinsic activity. Given the unique advantages of LDH-based materials, their derivatives have been also used as advanced electrocatalysts for water splitting. Here, recent progress on LDHs and their derivatives as advanced electrocatalysts for water splitting is summarized, current strategies for their designing are proposed, and significant challenges and perspectives of LDHs are discussed.
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页数:32
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