Trimetallic Nanoparticles Encapsulated into Bamboo-Like N-Doped Carbon Nanotubes as a Robust Catalyst for Efficient Oxygen Evolution Electrocatalysis Academic Article uri icon

abstract

  • AbstractHighefficiency oxygen evolution reaction (OER) electrocatalysts based on transition metal materials are one of the most promising alternatives, but their activity and durability are still far from desirable. Here, we report trimetallic Ndoped carbon nanotubes with rapid electron transport and rapid diffusion of the electrolyte that can significantly enhance the OER. The introduction of a third metal can adjust the electronic structure, thereby causing favorable intermediate adsorption on the catalysts. The optimized catalyst CoFeNi@CNTs exhibits a low overpotential of 287mV at 10mAcm2 and a small Tafel slope of 32mVdec1, which are obviously superior to the precious catalyst IrO2 and most previously reported catalysts. The CoFeNi@CNTs also exhibit excellent OER stability with small current density decay after 12h. The outstanding OER activity is ascribed to the unique carbon nanotube structure and strong synergy between three metals.

published proceedings

  • CHEMNANOMAT

altmetric score

  • 0.5

author list (cited authors)

  • Lu, M., Li, Y., Wu, Y., Xu, H., Gao, J., & Xu, S.

citation count

  • 8

complete list of authors

  • Lu, Mengting||Li, Yuwen||Wu, Yuhang||Xu, Hui||Gao, Junkuo||Xu, Shiqing

publication date

  • October 2020

publisher