Stable platinum catalyst and preparation method thereof

• Main Authors: TAN ZHENGXIN, PAN HEBIN
• Format: Patent
• Language: Chinese; English
• Published: 07.06.2024
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention relates to a stable platinum catalyst which comprises 0.8-1.2 wt% of Zn, 11-16 wt% of Pt and the balance of nano carbon black, platinum atoms and zinc atoms are uniformly and orderly distributed and loaded on the nano carbon black, the catalyst is obtained through an electrochemical deposition method, nano particles formed by zinc elements and platinum elements are utilized, platinum is deposited firstly, then zinc is deposited in a surrounding mode, and the stable platinum catalyst is obtained. According to the preparation method, the surface of the catalyst releases more active sites through volatilization of zinc element particles in the process of alternately depositing platinum and performing heat treatment in a heat treatment furnace, so that the oxygen reduction specific surface area activity of the catalyst is improved to 2.45 mA * cm <-2 > pt at most, the dosage of Pt is reduced, and the preparation method is simple in process, low in cost and suitable for industrial production. 本申请涉及一种