Related Experiment Video
Updated: Feb 20, 2026

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
Published on: December 6, 2021
In situ growth of cobalt@cobalt-borate core-shell nanosheets as highly-efficient electrocatalysts for oxygen
Chao Xie1, Yanyong Wang, Dafeng Yan
1State Key laboratory of Chem/Bio-sensing and Chemometrics, Provincial Hunan Key Laboratory for Graphene Materials and Devices, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P.R. China.
Abstract:
Development of efficient non-noble metal electrocatalysts for oxygen evolution reaction (OER) is still a crucial issue for renewable energy technologies. Herein, we report a core-shell-like catalyst of amorphous cobalt borate nanosheets grown on metallic cobalt deposited on Ti-mesh (Co@Co-Bi/Ti) by an in situ conversion strategy. Benefiting from the high activity, large surface area of Co-Bi nanosheets, outstanding electronic conductivity of metallic Co and the 3D structure inherited from Ti-mesh substrate, Co@Co-Bi/Ti shows high OER activity with a relatively small overpotential of 329 mV to obtain a current density of 10 mA cm-2, a low Tafel slope of 46 mV dec-1 and an accessible large current density of 500 mA cm-2 in alkaline solution. Besides, Co@Co-Bi/Ti exhibits good performance in a near-neutral medium. This study provides an effective pathway to improve the cobalt metal based materials.
More Related Videos
Related Concept Videos
Voltaic/Galvanic Cells
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...
Thermal and Photochemical Electrocyclic Reactions: Overview
Electrodeposition
Electrodeposition can...
Oxidation-Reduction Reactions
Electrochemistry: Overview
Alkali Metals
Table 1: Properties of the alkali metals

