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A preparation method of a transition metal oxide nitrogen and phosphorus doped catalyst applied to a zinc-air battery

A transition metal, zinc-air battery technology, applied in the direction of fuel cell half-cells and primary battery half-cells, battery electrodes, circuits, etc., can solve the problems of expensive cathode catalysts and limited resources, and achieve benefits for large-scale The effects of large-scale development and utilization, simple preparation process, and excellent oxygen reduction activity

Active Publication Date: 2021-05-04
山东科源新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the problem in the prior art that the zinc-air battery cathode catalyst is expensive and has limited resources, the purpose of the present invention is to provide a preparation method for a transition metal oxide nitrogen-phosphorus doped catalyst applied to a zinc-air battery

Method used

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  • A preparation method of a transition metal oxide nitrogen and phosphorus doped catalyst applied to a zinc-air battery
  • A preparation method of a transition metal oxide nitrogen and phosphorus doped catalyst applied to a zinc-air battery
  • A preparation method of a transition metal oxide nitrogen and phosphorus doped catalyst applied to a zinc-air battery

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Embodiment 1

[0033] A method for preparing a transition metal oxide nitrogen and phosphorus doped catalyst applied to a zinc-air battery, specifically comprising the following steps:

[0034] The first step, at room temperature, add 0.25g manganese acetate to quantitative phytic acid and ultrasonically for 20min to dissolve all the metal salts; then add excess acetone to the solution to produce supramolecular compound precipitation, finally pour out the solvent, and wash the supramolecular compound repeatedly with acetone Compound 3 times. In the second step, the supramolecular compound obtained in the first step was transferred to the porcelain boat of the tube furnace, and the temperature was raised to 800°C at a rate of 5°C / min under an argon atmosphere, and then kept at a constant temperature for 2 hours, and finally Cool to room temperature. In the third step, the sample obtained in the previous step is fully ground, transferred to a single-necked flask, added with excess 2M hydrochl...

Embodiment 2

[0036] A method for preparing a transition metal oxide nitrogen and phosphorus doped catalyst applied to a zinc-air battery, specifically comprising the following steps:

[0037] The first step is to add 0.25g of copper acetate to 2ml of phytic acid at room temperature and ultrasonically for 20 minutes to dissolve all the metal salts; then add excess acetone to the solution to produce supramolecular compound precipitation, and finally pour out the solvent and wash the supramolecular compound repeatedly with acetone Compound 3 times. In the second step, the supramolecular compound obtained in the first step was transferred to the porcelain boat of the tube furnace, and the temperature was raised to 800°C at a rate of 5°C / min under an argon atmosphere, and then kept at a constant temperature for 2 hours, and finally Cool to room temperature. The third step is to fully grind the sample obtained in the previous step, transfer it to a single-necked flask, add excess 2M hydrochlori...

Embodiment 3

[0039] A method for preparing a transition metal oxide nitrogen and phosphorus doped catalyst applied to a zinc-air battery, specifically comprising the following steps:

[0040]The first step is to add 0.25g of cobalt acetate to 2ml of phytic acid at room temperature and ultrasonically for 20 minutes to dissolve all metal salts; then add excess acetone to the solution to produce supramolecular compound precipitation, and finally pour out the solvent and wash the supramolecular compound repeatedly with acetone Compound 3 times. In the second step, the supramolecular compound obtained in the first step was transferred to the porcelain boat of the tube furnace, and the temperature was raised to 800°C at a rate of 5°C / min under an argon atmosphere, and then kept at a constant temperature for 2 hours, and finally Cool to room temperature. The third step is to fully grind the sample obtained in the previous step, transfer it to a single-necked flask, add excess 2m hydrochloric aci...

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Abstract

The invention discloses a preparation method of a transition metal oxide nitrogen and phosphorus doped catalyst applied to a zinc-air battery, which specifically comprises the following steps: a supramolecular compound formed by coordinating acetate containing M metal ions and phytic acid, The transition metal supramolecular compound is used as the precursor for high-temperature calcination under an inert atmosphere, and finally ammonia gas is used as the N source, and N doping is carried out at high temperature to obtain the final transition metal oxyphosphorus nitride. Transition metal oxyphosphorus nitride as an oxygen reduction catalyst can effectively reduce the overpotential of ORR, and the ORR process is shown to be a 4-electron catalytic mechanism by rotating disk electrode (RDE) and rotating ring disk electrode (RRDE), which is an ideal ORR reaction. process. The electrocatalyst fully utilizes the synergistic effect of transition metals and heteroatom elements in electrocatalysis, and exhibits excellent catalytic performance in the application of zinc-air batteries.

Description

technical field [0001] The invention belongs to the field of new energy material technology and electrochemical catalysis technology, and specifically relates to a preparation method of a transition metal oxide nitrogen phosphorus doped catalyst applied to a zinc-air battery. Background technique [0002] With the world's increasing demand for energy and increasingly serious environmental problems, we urgently need an efficient, low-cost and environmentally friendly energy conversion and storage system. Metal-air batteries are considered a new type of energy conversion device without environmental pollution, and their efficiency is significantly higher than that of traditional generators. In recent years, zinc-air batteries have shown good application prospects. However, in order to achieve real commercial application of zinc-air batteries, problems such as the cost and performance of cathode catalysts need to be solved. The oxygen reduction reaction (ORR) is the cathodic r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/90H01M12/06
CPCH01M4/9016H01M4/9083H01M12/06
Inventor 刘希恩李平
Owner 山东科源新材料有限公司
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