| abstract |
The invention discloses a quenching modification method for improving electrocatalysis performance of metal oxides and application thereof. The method comprises the following steps: and calcining the synthesized metal oxide precursor at high temperature, quickly taking out, and quickly cooling in an ice salt solution with a certain concentration. The method provided by the invention not only can dope metal ions into the metal oxide, but also can carry out structural modification on the surface of the metal oxide. The valence state of elements in the catalyst is changed by doping metal ions, so that the surface adsorption of oxygen is facilitated, and OOH deprotonation is promoted; meanwhile, the catalyst has different crystal structures on the surface, and has lower crystallinity and more defects. Electrochemical tests show that the metal oxide catalyst prepared by the quenching modification method has better electrocatalysis performance, lowers overpotential and has better catalytic stability. Meanwhile, the method has the advantages of simple process, low cost and wide application range, and is beneficial to promoting the manufacturing and development of the electro-catalyst. |