Catalyst slurry and preparation method for air cathode

A technology of catalyst slurry and air cathode, applied in the direction of fuel cell half-cells and primary battery half-cells, electrical components, battery electrodes, etc., which can solve the constraints on the industrialization process of metal-air batteries, unfavorable rapid production, and equipment costs Advanced problems, to achieve the effect of promoting commercial large-scale and rapid production, promoting the process of industrialization, and reducing equipment costs

Active Publication Date: 2015-12-16
NINGBO GRAPHENE INNOVATION CENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of the catalyst layer by coating and other methods is obviously too low in efficiency and high in equipment costs, which

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] According to the following mass percentages: surfactant: 1%, catalyst: 5%, carbon black: 5%, binder: 3%, terpineol: 86%. Weigh 1g sodium dodecylbenzenesulfonate (SDS), 5gMnO 2 , 5g carbon black, 3g polytetrafluoroethylene (PTFE), 86g terpineol for subsequent use.

[0035] a Add sodium dodecylbenzenesulfonate (SDS) to terpineol, mix evenly and heat to 30-50°C, then gradually add polytetrafluoroethylene (PTFE), and stir for 10-30min to form the first mixed solution;

[0036] b Combining carbon black and MnO 2 Adding to the first mixed liquid, stirring for 1-1.5 hours, to obtain catalyst slurry;

[0037] c. Fix the carbon felt on the screen printing machine to form a screen printing screen, place the catalyst slurry on the screen printing screen, adjust the distance and angle of the scraper of the screen printing machine, and print the catalyst slurry onto an air cathode substrate. The air cathode substrate printed with the catalyst slurry is sintered under the conditio...

Embodiment 2

[0039] According to the following mass percentages: surfactant: 10%, catalyst: 30%, carbon black: 20%, binder: 5%, terpineol: 35%. Take by weighing 10g sulfated castor oil (Turkey red oil), 30gMn 3 o 4 , 20g carbon black, 5g ethyl cellulose (EC), 35g terpineol for subsequent use.

[0040] a Add sulfated castor oil (Turkish red oil) to terpineol, mix evenly and heat to 30-50°C, then gradually add ethyl cellulose (EC), and stir for 10-30min to form the first mixed solution;

[0041] b. Add carbon black and Mn3O4 into the first mixed solution, stir for 1-1.5 hours to obtain catalyst slurry;

[0042] c. Fix the carbon felt on the screen printing machine to form a screen printing screen, place the catalyst slurry on the screen printing screen, adjust the distance and angle of the scraper of the screen printing machine, and print the catalyst slurry onto an air cathode substrate. The air cathode substrate printed with the catalyst slurry is sintered under the condition of 100-200...

Embodiment 3

[0044] According to the following mass percentages: surfactant: 5%, catalyst: 20%, carbon black: 10%, binder: 4%, terpineol: 61%. Weigh 1.5gFA196, 20gMnO 2 , 10g carbon black, 5g polytetrafluoroethylene (PTFE), 61g terpineol for subsequent use.

[0045] a Add FA196 to terpineol, mix evenly and heat to 30-50°C, then gradually add polytetrafluoroethylene (PTFE), stir for 10-30min to form the first mixed solution;

[0046] b Combining carbon black and MnO 2 Adding to the first mixed liquid, stirring for 1-1.5 hours, to obtain catalyst slurry;

[0047] c. Fix the carbon felt on the screen printing machine to form a screen printing screen, place the catalyst slurry on the screen printing screen, adjust the distance and angle of the scraper of the screen printing machine, and print the catalyst slurry onto an air cathode substrate. The air cathode substrate printed with the catalyst slurry is sintered under the condition of 100-250° C. to form the air cathode with the catalyst la...

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PUM

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Abstract

Catalyst slurry used for a metal air battery is disclosed. The catalyst slurry comprises the following components: 1-10% by mass of surfactant, 5-30% by mass of catalyst, 5-20% by mass of carbon black, 3-5% by mass of binder and the balance of terpilenol. The catalyst slurry provided by the invention can effectively solve the problems of bad dispersity of the catalyst slurry and high possibility of dropping off of the catalyst in the discharging process of batteries in the prior art. The invention also provides a method for preparing an air cathode from the catalyst slurry.

Description

technical field [0001] The invention relates to the technical field of metal-air batteries, in particular to a cathode slurry suitable for commercial production and a method for preparing an air cathode with the cathode slurry. Background technique [0002] At present, the global energy supply is becoming increasingly scarce, and people are exploring new energy sources. As a new technology with high efficiency, cleanliness and energy utilization, fuel cells have become a development hotspot in the field of energy in the world today. Metal-air batteries take advantage of the advantages of fuel cells, using oxygen in the air as the anode active material, metal M (zinc, aluminum, lithium, etc.) as the cathode active material, oxygen in the air can continuously pass through the gas diffusion electrode to reach the electrochemical reaction The interface reacts with metal M (zinc, aluminum, lithium, etc.) to release electric energy. And because metal-air batteries have abundant r...

Claims

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Application Information

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IPC IPC(8): H01M4/88H01M4/90H01M12/06
CPCH01M4/8835H01M4/90H01M4/9083H01M12/06
Inventor 孙珊珊刘兆平苗鹤薛业建王勤李世华
Owner NINGBO GRAPHENE INNOVATION CENT CO LTD
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