Nickel-cobalt-iron tri-metal catalyst through phosphating and then vulcanizing of in situ grown graphene and preparation method of nickel-cobalt-iron tri-metal catalyst

Abstract

The invention discloses a nickel-cobalt-iron tri-metal catalyst through phosphating and then vulcanizing of in situ grown graphene. The nickel-cobalt-iron trimetal catalyst consists of Ni, Co, Fe, P and S in the form of phosphorus sulfide, is loaded on carbon paper, and has the general formula of (NixCoyFez) PvSu @CP, in the formula, x / y is more than or equal to 0 and less than or equal to 10, x / z is more than or equal to 0 and less than or equal to 10, v is more than or equal to 0 and less than or equal to 10, and u is more than or equal to 0 and less than or equal to 10. In addition, the invention further discloses a preparation method of the nickel-cobalt-iron tri-metal catalyst through phosphating and then vulcanizing of in situ grown graphene. According to the transition metal phosphorus and sulfur co-doped and in-situ grown graphene coated and integrated (NixCoyFez) PvSu@CP catalyst, the overpotential of electrolyzed water is effectively reduced, the oxygen evolution capacity of the electrolyzed water is improved, very prominent oxygen evolution catalytic activity is presented, the durability is improved, the efficiency is higher when the catalyst is used for oxygen evolution of the electrolyzed water, great potential is achieved when the catalyst is used in future electrolytic cells; meanwhile, the catalyst has a wide application prospect in the field of new energy in the future, is particularly applied to an electric automobile driven by a hydrogen fuel cell, and has a great value in industry.

Description

technical field [0001] The invention relates to the technical field of catalytic materials, in particular to a trimetallic catalyst and a preparation method thereof. Background technique [0002] The increasing demand for energy, the depletion of fossil energy and the related negative environmental impacts have led humans to continuously advance research on various clean and sustainable energy conversion and storage technologies in order to make them cheaper and more environmentally friendly. Solar energy is one of the most abundant natural resources, and various methods of utilizing solar energy have been explored. One of the most typical approaches is to fabricate solar cells (ie, solid-state photovoltaic devices and dye-sensitized solar cells) that convert solar energy into electricity. But there is a problem here, that is, the energy cannot be stored. In addition, solar energy is usually discontinuous and variable due to regional or seasonal factors, so it is necessary...

AI Technical Summary

Problems solved by technology

At present, although there are many reports on transition metal monometallic, bimetallic and trimetallic catalysts, there is no report on nickel-cobalt-iron-iron trimetallic catalysts in which graphene is phosphated first and then sulfided in situ.

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