Cobalt metaphosphate/nitrogen-carbon-oxygen reduction catalyst as well as preparation method and application thereof

A cobalt metaphosphate and catalyst technology, applied in structural parts, electrical components, battery electrodes, etc., can solve the problems of low initial potential and half-wave potential, and achieve the effect of simple method, enhanced ORR performance, and promotion of electrocatalytic activity.
CN110707336AActive Publication Date: 2020-01-17NANJING UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING UNIV OF SCI & TECH
Publication Date
2020-01-17

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Abstract

The invention discloses a cobalt metaphosphate / nitrogen-carbon-oxygen reduction catalyst as well as a preparation method and application thereof, and belongs to the field of catalyst materials. The catalyst is a Co (PO3) 2 / NC nano material, wherein NC is a nitrogen-doped carbon material, and the preparation method comprises the following steps of slowly dripping an ATMP aqueous solution into a methanol solution of cobalt nitrate drop by drop, reacting for 15-120 minutes, centrifuging, washing and drying to obtain a precursor; and calcining the precursor for 1-3 hours at 700-900 DEG C in a protective gas atmosphere to obtain the catalyst. The cobalt metaphosphate / nitrogen carbon prepared by the invention is formed by compactly and vertically crossing a plurality of ultrathin nanosheets, thethickness of the nanosheet ranges from 20 nm to 50 nm, and the length of the nanosheet ranges from 0.5 micrometer to 2 micrometers. The nanosheet is loaded with a plurality of cobalt metaphosphate nano-particles, and the size of the nanosheet is about 10 nm. The catalyst has higher initial potential and half-wave potential, high stability and high methanol tolerance.
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Description

technical field

[0001] The invention relates to the field of catalyst materials, more specifically, to a cobalt metaphosphate / nitrogen carbon oxygen reduction catalyst and its preparation method and application. Background technique

[0002] Traditional fuel vehicles are one of the main sources of environmental pollution, and controlling the energy consumption and emissions of fuel vehicles is an important means to solve environmental problems. In recent years, with the increasingly prominent environmental and energy issues, new energy vehicles are gradually replacing the use of traditional fuel vehicles due to their clean and pollution-free features, and have become a research hotspot for major automobile manufacturers and scientific research institutions in the world. Fuel cell vehicles can truly achieve zero emissions and are considered to be the ultimate solution for new energy vehicles. There are still many difficulties in the large-scale commercialization of fuel cell...

Claims

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