The properties,structure and electrocatalytic performance of Co3O4 and doped materials were summarized.The cobalt ions in Co3O4 were the mixed valence of Co2+ and Co3+.Co3O4 had a unique spinel crystal structure,which was conducive to the electron conduction between Co2+ and Co3+ ions.Co3O4 had empty electron orbits and was easy to realize lattice oxidation,which could be used as ORR catalyst.The influencing factors of the electrocatalytic performance of Co3O4 were mainly determined by its surface area and electronic states.The surface area was adjusted by adjusting the size and morphology of the nanostructure.Electronic states could be regulated by the incorporation of a third element or oxygen vacancy.The excellent catalytic performance and methanol tolerance of Co3O4 doped with different materials were reviewed.Co3O4 doping with Pd could improve the dispersion of metal Pd on the surface of the carrier and reduce the agglomeration of metal particles.The combination of Co3O4 and P enhanced the intrinsic activity of the catalyst.Co3O4 doped with Ni exhibited better ORR stability and methanol tolerance than Pt/C.Co3O4 doped with nitrogen atom demonstrated good stability and resistance to methanol poisoning.
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基金资助
国家自然科学基金(21563002);国家大学生创新创业训练项目(202210138002);内蒙古自然科学基金项目(2023QN02003);内蒙古自治区科技计划项目(2023YFDZ0070);内蒙古自治区高等学校科学研究项目(NJZZ20190)