Oxygen evolution cobalt diselenide/tin dioxide and nitrogen doped Ketjen carbon black composite catalyst and preparation method and application thereof

• Main Authors: ZHANG ZHILIANG, LI JUNHUA, LONG XUANDA, QIAN DONG, SU KANDA, XU DEYAO
• Format: Patent
• Language: Chinese; English
• Published: 07.08.2020
• Subjects: APPARATUS THEREFOR; BASIC ELECTRIC ELEMENTS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; ELECTRICITY; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention discloses an oxygen evolution cobalt diselenide/stannic oxide and nitrogen doped Ketjen carbon black composite catalyst and a preparation method and application thereof. The composite catalyst is formed by uniformly loading cobalt diselenide particles and stannic oxide particles on nitrogen doped Ketjen carbon black, the preparation method comprises the following steps: carrying outnitrogen doping on Ketjen carbon black to obtain nitrogen-doped Ketjen carbon black, preparing a cobalt hexahydroxystannate and nitrogen-doped Ketjen carbon black precursor through adoption of a coprecipitation method, and carrying out one-step high-temperature selenization treatment on the precursor to obtain the oxygen evolution cobalt diselenide/tin dioxide and nitrogen-doped Ketjen carbon black composite catalyst. The preparation process is simple, low in cost and beneficial to industrial production; and the obtained composite catalyst is applied to the electrolysis oxygen evolution process of water, has the chara