Citation: ZHANG Zhen, SHAO Xin, HUANG Ming-Hua. Cobaltosic Oxide Nanoparticles Supported on Mesoporous Carbon as Highly Efficient Electrocatalysts for Oxygen Reduction Reaction[J]. Chinese Journal of Analytical Chemistry, ;2020, 48(6): 721-726. doi: 10.19756/j.issn.0253-3820.201026 shu

Cobaltosic Oxide Nanoparticles Supported on Mesoporous Carbon as Highly Efficient Electrocatalysts for Oxygen Reduction Reaction

School of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China

Received Date: 10 January 2020
Revised Date: 19 March 2020

Fund Project: This work was supported by the National Natural Science Foundation of China (No. 21775142), the Sino-German Center for Research Promotion (No. GZ 1351) and the Fundamental Research Funds for the Central Universities, China (No. 201822008).

Fuel cell, as a prospective energy conversion device system, provides high conversion efficiency and cleaning products. However, the development of fuel cell is significantly hindered by the sluggish kinetics of the oxygen reduction reaction (ORR) in the cathode, so high-efficiency cathode catalyst is highly required. As the state-of-the-art electrocatalysts, platinum-based materials are still the primary choice for ORR, but a series of issues including high cost and scarcity of raw materials make the large-scale applications of fuel cell difficult. Consequently, the development of non-noble metal catalystsis is becoming more urgent to solve the issue of the fuel cell. Herein, the mesoporous carbon precursors were first synthesized by the soft template method. Then the mixture of cobalt salts and the carbon precursors was heated at 120℃ to evaporate the solvent, followed by the calcination at 750℃. X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), cyclic voltammetry (CV) and linear sweep voltammetry (LSV) were used to characterize the obtained catalysts. The results showed that the cobalt oxide nanoparticles were successfully supported on the mesoporous carbon materials with high surface area. In an alkaline medium, the as-prepared catalyst exhibited high electrocatalytic activity for ORR, which was comparable to that of commercial Pt/C. It also showed a higher stability than the Pt/C catalyst. The catalyst was expected to replace the expensive Pt as a new cathode material for fuel cells.
- Mesoporous carbon,
- Cobaltosic oxide,
- Oxygen reduction reaction,
- Non-noble metal catalyst
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