Advances in non-metallic doping of transition metal electrocatalysts for overall water splitting
Transition metal-based materials with relatively low cost and excellent catalytic performance are consid-ered as the most promising candidates to replace noble metal-based electrocatalysts in the field of overall water split-ting.However,their wide applications are hindered by the limited active sites and relatively poor electrical conduc-tivity.The doping of non-metallic elements can modulate the electronic structure of the host material and optimize the adsorption energy,thus positively affecting the activity and stability of transition metal-based electrocatalysts and narrowing the performance gap between them and precious metal materials.In this paper,we summarize the recent research on the modification of non-metallic elements in transition metal-based electrocatalytic materials,systematically review the methods of non-metallic element doping(high-temperature calcination,hydrothermal/sol-vent thermal,plasma treatment and electrodeposition),the doping effects of different non-metallic elements(single non-metallic element doping,multi-nonmetallic element doping and composite doping),and analyze the effects of non-metallic element modification on transition metal-based electrocatalysts from multiple perspectives of physico-chemical property changes and electronic structure changes.The effects of non-metallic element modification on transition metal-based materials are analyzed from the perspectives of physicochemical property change and elec-tronic structure change.In the end,the future development direction of non-metallic element doped transition metal-based electrocatalysts is prospected.
transition metalelectrocatalystnon-metallic elementdopingoverall water splitting
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维普
