Composite material of NiFe-LDH nanosheets and CoP nanowires for efficient oxygen evolution reaction

• Published in: Ionics 2023-10, Vol.29 (10), p.4181-4189
• Main Authors: Tang, Zena, Xu, Meiling, He, Jingying, Chen, Yuying, Ye, Suzhen, Lin, Jiechun, Chen, Sangqi, Lin, Xia, Liu, Sijie, Li, Yuxiu, Lan, Bang, Cao, Renping, Zhang, Lei
• Format: Article
• Language: English
• Subjects: Chemistry; Chemistry and Materials Science; Composite materials; Condensed Matter Physics; Electrocatalysts; Electrochemistry; Electronic structure; Energy Storage; Heterostructures; Intermetallic compounds; Iron compounds; Metal foams; Nanosheets; Nanowires; Nickel compounds; Optical and Electronic Materials; Oxygen evolution reactions; Renewable and Green Energy
• ISSN: 0947-7047; 1862-0760
• DOI: 10.1007/s11581-023-05125-5

Developing composite material is a feasible strategy to explore high-efficiency electrocatalysts for oxygen evolution reaction (OER). In this work, NiFe-LDH nanosheets were coupled on the surface of CoP nanowires/Ni foam by a simple two-step hydrothermal method. Their electronic structure is affected each other by a strong interaction due to the formed hierarchical heterostructure, regulating the intrinsic activity. CoP with a thin and long nanowire structure provides a large electrochemical active area. With these advantages, the prepared NiFe-LDH nanosheets@CoP nanowires/Ni foam shows an enhanced oxygen evolution reaction (OER) performance with an overpotential of 190 mV at 10 mA·cm −2 in an alkaline environment (1 M KOH). This paper provides a potential strategy for high-efficiency oxygen evolution reaction (OER).