Related Experiment Video
Updated: Mar 26, 2026

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
Enhancing capacitance behaviour of CoOOH nanostructures using transition metal dopants by ambient oxidation
Yanhui Chen1,2, Junfeng Zhou2, Pierce Maguire2
1Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing, 100124, China.
Abstract:
Cobalt hydrate and doped binary Co0.9M0.1OOH (M = Ni, Mn, Fe) nanorings of 100-300 nm were fabricated in solution through a facile ambient oxidation method. A transformation from Co0.9Ni0.1(OH)2 nanodiscs to hollow Co0.9Ni0.1OOH nanorings was observed with prolonged reaction time. Core-shell nanodiscs have elemental segregation with a Co(OH)2 core and Ni(OH)2 shell. Co0.9Ni0.1OOH nanorings displayed a higher electrochemical capacitance than Mn and Fe doped nanorings materials or materials with disc-like geometries.

