Polyoxometalate/metal–organic framework hybrids and their derivatives for hydrogen and oxygen evolution electrocatalysis

• Published in: Materials today energy Vol. 19; p. 100618
• Main Authors: Wang, Z.-H., Wang, X.-F., Tan, Z., Song, X.-Z.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01-03-2021
• Subjects: Electrocatalyst; HER; OER; POM/MOF and derivatives; Electrocatalyst; HER; OER; POM/MOF and derivatives
• ISSN: 2468-6069; 2468-6069
• DOI: 10.1016/j.mtener.2020.100618

Transition metal–based materials have become significant family of electrocatalysts for hydrogen and oxygen evolution because of their low cost, various compositions and structures, and their excellent electronic transfer ability. Because of their tunable compositions and diverse structures, polyoxometalates (POMs) are promising catalytic components and are promising precursors for the fabrication of early transition metal–based materials, especially for Mo and W, for hydrogen and oxygen evolution electrocatalysis. By incorporating POMs into metal–organic frameworks (MOFs) , the target POM/MOF will promote the dispersion of POMs and increase the compositional and structural complexity of the derived materials. In this review, recent relevant research fruits focusing on POM/MOF composites and their derivatives (such as carbides, oxides, phosphides, sulfides, and selenides) are summarized. Their designable synthesis, structure modulation, and electrocatalytic performance in HER and OER are highlighted to figure out the structure-property relationship. The existing problems of POM/MOF materials and their derivatives in electrocatalysis are also discussed. Then we propose the future prospective, providing a brand new vision of design and development of other POM/MOF-based/derived advanced electrocatalysts for water splitting.
This review will highlight the recent progress of polyoxometalate (POM)/metal–organic framework (MOF) hybrids and their derived functional materials, including metal carbides, oxides, phosphides, and chalcogenides, for hydrogen and oxygen evolution electrocatalysis. It will also focus on the structure modulation to boost the activity and figure out the structure–property relationship. This review will provide insightful guidance for design and development of other POM/MOF-based/derived advanced electrocatalysts for water splitting. [Display omitted]
•The applications of polyoxometalate / metal–organic framework hybrids and their derivatives in both hydrogen evolution reaction and oxygen evolution reaction are discussed.•Heterostructure, hollow structure, core/shell structure, carbon coating, and heteroatoms doping are summarized.•The synthesis and structure design strategies and the structure–activity relationship are figured out.•Mo- and W-based materials are focused.