期刊
MATERIALS
卷 14, 期 1, 页码 -出版社
MDPI
DOI: 10.3390/ma14010207
关键词
monolayer nanosheets; defect; water splitting; oxygen evolution
类别
资金
- National Natural Science Foundation of China [61971049]
- Beijing Municipal Science and Technology Commission [Z181100004418004]
- Key Scientific Research Project of Beijing Municipal Commission of Education [KZ202010015024]
- Research and Development Program of BIGC [Ec202006]
Monolayer nanosheets with unique physical and chemical properties have been widely used in photo/electrocatalysis due to their abundance of coordination sites and exposed characteristics. Introducing highly electroactive Co ions into monolayer NiFe-LDH successfully increased the concentration of defect sites, benefiting the electrocatalytic water oxidation reaction.
Monolayer nanosheets have gained significant attention as functional materials and also in photo/electrocatalysis due to their unique physical/chemical properties, abundance of highly exposed coordination sites, edges, and corner sites, motivating the pursuit of highly active monolayer nanosheets. NiFe-based layered double hydroxide (NiFe-LDH) nanosheets have been regarded as the most efficient electrocatalysis for oxygen evolution. However, the limited catalytic active site and the stacking layer limited the performance. Therefore, by introducing highly electroactive Co ions into monolayer NiFe-LDH, the obtained ternary NiFeCo-LDH monolayer structure possessed an increased concentration of defect (oxygen and metal vacancies), providing enough unsaturated coordination sites, benefitting the electrocatalytic water oxidation, as also explained by the density functional theory (DFT). This work reported an efficient strategy for the synthesis of ternary monolayer LDH in the application of energy conversion and storage.
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