Negative electrode of zinc-bromine flow battery for energy storage and manufacture method thereof

A technology of battery negative electrode and negative electrode, which is applied to battery electrodes, circuits, electrical components, etc., can solve the problems of large electrochemical polarization of zinc deposition and dissolution, zinc dendrite, small contact area between electrolyte and electrode, etc., and achieves easy operation. , the effect of increasing the contact area and the preparation process is simple

Inactive Publication Date: 2012-07-11
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the surface area of ​​the above-mentioned plates is small, resulting in a small contact area between the electrolyte and the electrode, and the electrochemical polarization of zinc deposition and dissolution is large. zinc dendrite

Method used

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  • Negative electrode of zinc-bromine flow battery for energy storage and manufacture method thereof
  • Negative electrode of zinc-bromine flow battery for energy storage and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1) Porous layer slurry configuration: by weight parts, weigh 1 g of chlorinated polypropylene, 1 g of activated carbon, and 1 g of conductive graphite, and dissolve them with an appropriate amount of ethyl acetate for later use;

[0024] 2) The porous agent slurry is evenly coated on one side surface of the carbon-plastic composite material plate by spraying to prepare a porous layer;

[0025] 3) The carbon-plastic composite material plate coated with the porous agent layer is subjected to vacuum high-temperature drying treatment, the drying temperature is 90°C, the drying time is 60s, the vacuum degree is -0.01MPa, and the temperature is kept at room temperature to obtain the negative electrode. And assemble the battery for testing.

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Abstract

The invention relates to a negative electrode of a zinc-bromine flow battery for energy storage and a manufacture method of the negative electrode. The electrode comprises a carbon plastic composite material plate, and a porous layer having high specific surface area and adhered onto one side surface of the carbon plastic composite material plate. The porous layer is composed of a binding agent and a porous material, wherein the binding agent is selected from chlorinated polypropylene or chlorinated polyethylene; the porous material includes active carbon, carbon-supported metal, graphite or carbon black, with a weight ratio of (1 to 5): (1 to 15); the loading amount of the porous material on the carbon plastic composite material plate is 0.5mg/cm<2> to 10mg/cm<2>. The negative electrode adopting the porous carbon plastic composite material with high specific surface area can increase the contact area between electrolyte and the electrode and suppress electrochemical polarization of zinc deposition and dissolving of the negative electrode, and has higher conductivity, thereby greatly improving battery performance.

Description

technical field [0001] The invention relates to the technical field of liquid flow energy storage batteries, in particular to a negative electrode of a zinc-bromine flow energy storage battery and a preparation method thereof. Background technique [0002] Recently, with the increasing shortage of energy supply in the world, people have begun to pay attention to the development and utilization of renewable energy such as wind energy and solar energy. However, to ensure the stable power supply of renewable energy power generation systems such as solar energy and wind energy, it is necessary to combine Reliable energy storage technology cooperates with it. Looking at various energy storage technologies, the chemical energy storage method of liquid flow energy storage batteries has become one of the most suitable batteries for large-scale energy storage due to its unique advantages. [0003] Zinc-bromine redox flow battery (ZBB) is a low-energy, high-efficiency, environment-fri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/96H01M4/88
CPCY02E60/50
Inventor 张华民赖秦志张立群
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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