Cu2O/N-C oxygen reduction catalyst and preparation and application thereof

A catalyst, cuprous oxide technology, applied in the field of material chemistry, can solve the problems of poor stability of metal nitrogen carbon materials, damage to battery materials and devices, shortage of metal platinum resources, etc., achieve excellent stability, solve poor stability, and improve electrochemical performance effect
CN112018398AActive Publication Date: 2020-12-01CENT SOUTH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CENT SOUTH UNIV
Publication Date
2020-12-01

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Abstract

The invention discloses a Cu2O / N-C oxygen reduction catalyst and preparation and application thereof. The preparation method of the catalyst comprises the steps that a certain amount of zinc salt anda carbon source are dissolved in an organic solvent, a copper source is added, the Cu2O / N-C oxygen reduction catalyst is obtained through pyrolysis, and the amount of generated cuprous oxide is regulated and controlled by adjusting the amount of the added copper source in an experiment. The method is simple and high in repeatability. The catalyst is a composite material of cuprous oxide and nitrogen-doped carbon, the cuprous oxide is an active site for oxygen reduction catalysis, and the nitrogen-doped carbon can improve the conductivity of the material, so that the material has relatively high current density. The prepared optimal material is used as an oxygen reduction catalyst of an aluminum-air battery, the oxygen reduction half-wave potential is 0.8V, and the limiting current densityis 4.6mA / cm<2>.
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Description

technical field

[0001] The invention relates to the field of material chemistry and the field of electrocatalysis technology, in particular to a Cu 2 O / N-C oxygen reduction catalyst and its preparation method and application. Background technique

[0002] With the deteriorating global environment and the increasing shortage of fossil energy, people are deeply aware that the development of new clean energy is imminent. Aluminum-metal-air batteries have high energy density (theoretically up to 8131Wh / kg Al and ~21,954Wh / L Al ), rich reserves, low cost, good safety and other advantages are considered to be a new generation of energy storage batteries with great potential. At present, the development of aluminum-metal-air batteries is mainly limited by the oxygen reduction reaction of its cathode air. The oxygen reduction reaction is a process with slow kinetics. At present, the catalysts that are more commercially dependent are platinum-based catalysts, but metal platinum res...

Claims

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