Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.mtener.2019.01.004
Title: Defect chemistry in 2D materials for electrocatalysis
Authors: Tao Sun 
Guoqiang Zhang
Dong Xu
Xu Lian
Hexing Li
Wei Chen 
Chenliang Su 
Keywords: Science & Technology
Physical Sciences
Technology
Chemistry, Physical
Energy & Fuels
Materials Science, Multidisciplinary
Chemistry
Materials Science
Defect chemistry
2D materials
Electrocatalysis
Metal-free based catalysts
Transition metal-based catalysts
OXYGEN REDUCTION REACTION
HYDROGEN-EVOLUTION REACTION
METAL-FREE ELECTROCATALYSTS
AMORPHOUS MOLYBDENUM SULFIDE
DOUBLE HYDROXIDE NANOSHEETS
ACTIVE EDGE SITES
FUNCTIONALIZED GRAPHENE NANOPLATELETS
CARBON-BASED ELECTROCATALYSTS
LAYERED DOUBLE HYDROXIDES
BORON-DOPED GRAPHENE
Issue Date: 1-Jun-2019
Publisher: ELSEVIER SCI LTD
Citation: Tao Sun, Guoqiang Zhang, Dong Xu, Xu Lian, Hexing Li, Wei Chen, Chenliang Su (2019-06-01). Defect chemistry in 2D materials for electrocatalysis. MATERIALS TODAY ENERGY 12 : 215-238. ScholarBank@NUS Repository. https://doi.org/10.1016/j.mtener.2019.01.004
Abstract: © 2019 Elsevier Ltd Two-dimensional (2D) nanomaterials, including metal-free (graphene, carbon nitride, and black phosphorus et al.) and transition metal-based materials (dichalcogenides, oxides, hydroxides, phosphides, and MXenes et al.), have emerged as promising candidates for electrocatalysis due to their unique physical, chemical, and electronic properties. Specifically, 2D materials with ultra-thin thickness usually possess more vacancy-type defects and exposed edges than bulk materials, resulting in different electronic characteristics relative to those of bulk materials and leading to changes in the reactant absorption energy on catalysts. Introducing heteroatom dopants can further alter the charge distribution in 2D materials, thereby facilitating the formation of new defects and catalytic active-sites to improve the electrocatalytic performance. This review highlights recent defect chemistry advances and developments in 2D materials for electrocatalysis. We discuss various defects in 2D materials, such as edge defects, topological defects and vacancy defects so on, and the effects of defects on electrocatalytic performance. Defect engineering and rational design strategies for controlling defects on 2D materials will also be systematically discussed. Finally, various advanced characterization technologies to reveal different types of defects will be discussed.
Source Title: MATERIALS TODAY ENERGY
URI: https://scholarbank.nus.edu.sg/handle/10635/169204
ISSN: 2468-6069
DOI: 10.1016/j.mtener.2019.01.004
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