Facile synthesis of Co-Fe layered double hydroxide nanosheets wrapped on Ni-doped nanoporous carbon nanorods for oxygen evolution reaction

Jun Zhang; Lin Hao; Zitong Chen; Yongjun Gao; Huan Wang; Yufan Zhang

doi:10.1016/j.jcis.2023.06.199

Facile synthesis of Co-Fe layered double hydroxide nanosheets wrapped on Ni-doped nanoporous carbon nanorods for oxygen evolution reaction

J Colloid Interface Sci. 2023 Nov 15;650(Pt A):816-824. doi: 10.1016/j.jcis.2023.06.199. Epub 2023 Jun 28.

Authors

Jun Zhang¹, Lin Hao², Zitong Chen¹, Yongjun Gao¹, Huan Wang¹, Yufan Zhang³

Affiliations

¹ Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Materials Science, Institute of Life Science and Green Development, Hebei University, 071002 Baoding, PR China.
² College of Science, Hebei Agricultural University, 071001 Baoding, PR China.
³ Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Materials Science, Institute of Life Science and Green Development, Hebei University, 071002 Baoding, PR China. Electronic address: zyf@hbu.edu.cn.

PMID: 37450970
DOI: 10.1016/j.jcis.2023.06.199

Abstract

Owing to the high demand for clean and renewable energy technologies, several studies have focused on developing economically feasible, highly effective, and stable non-precious electrocatalysts for promoting the oxygen evolution reaction (OER). This development has stimulated an expansion of investigative quests and indicated the importance of advancing electrocatalytic research in this field. Through a facile and efficient method, Ni nanoparticles were uniformly embedded into nanoporous carbon nanorods (Ni-NCN), which are subsequently electrodeposited on CoFe-layered double hydroxide (LDH) nanosheets to produce highly efficient Ni-NCN/CoFe-LDH composites used for OER. The composite exhibited excellent catalytic activity toward OER owing to its low overpotential (ƞ10 mA = 280 mV), small Tafel slope (42 mV dec^-1), and excellent durability. The Ni-NCN/CoFe-LDH catalyst exhibited higher OER activity owing to its uniformly dispersed Ni nanoparticles, large specific surface area, enhanced electron transport, and synergistic effect of multiple composites. Additionally, the enhanced synergistic effect of Ni-NCN promoted higher OER performance compared with Ni-undoped carbon nanorod/LDH, indicating that the Ni dopant and LDH significantly contributed to the overall OER performance. The synergistic effect of multiple composites significantly contributed to the excellent OER performance, indicating their potential as OER catalyst.

Keywords: Carbon nanorods; CoFe-layered double hydroxides; Oxygen evolution reaction.