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Electrode used for vanadium redox flow battery capable of improving functionality and vanadium redox flow battery adopting same

A vanadium flow battery and electrode technology, applied in battery electrodes, fuel cells, regenerative fuel cells, etc., can solve the problems of charge and discharge current density limit, limit the output power density of redox flow batteries, etc., and achieve charge and discharge capacity and The effect of improving battery efficiency

Active Publication Date: 2018-03-09
JNTG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, since the thickness of the carbon fiber mat used in the redox flow battery employing the carbon fiber felt electrode is 3mm or more, and there is a limit in charge and discharge current density, the output power density of the redox flow battery is limited.

Method used

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  • Electrode used for vanadium redox flow battery capable of improving functionality and vanadium redox flow battery adopting same
  • Electrode used for vanadium redox flow battery capable of improving functionality and vanadium redox flow battery adopting same
  • Electrode used for vanadium redox flow battery capable of improving functionality and vanadium redox flow battery adopting same

Examples

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Embodiment 1

[0046] 70 g of carbon fiber (manufacturing company: Toray Corporation, product number: T300) having a carbon content of about 97%, a diameter of about 7 μm, and a fiber length of about 6 mm, a carbon content of about 97%, a diameter of about 7 μm, and a fiber length of about 12 mm 30 g of carbon fiber (manufacturing company: Toray Corporation, product number: T300) and 1 g of dispersant (Triton X-100) were added to 200 L of water and uniformly dispersed at a speed of 1,500 rpm for about 20 minutes by using a mechanical mixing method. Papermaking is performed.

[0047] To the carbon fiber web after papermaking with about 3mg / cm 2 The following slurry is impregnated and hardened in such an amount that a phenolic resin solution (weight average molecular weight: about 3,000 to 5,000, solvent: N-methyl-2-pyrrolidone) and carbon black (manufacturing company: Asbury Carbons, Model name: 5991) (phenolic resin / carbon black weight ratio = 50 / 50, total solid content of the mixture: abou...

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Abstract

The invention relates to an electrode used for a vanadium redox flow battery capable of improving functionality and the vanadium redox flow battery adopting the electrode. The electrode is characterized by comprising a non-woven porous carbon base material; the porous carbon base material contains carbon fiber and one or more than one conducting carbon.

Description

technical field [0001] The present invention relates to an electrode for a vanadium redox flow battery and a vanadium redox flow battery using the electrode. The electrode is a vanadium redox flow battery with improved charge and discharge capacity and battery efficiency. [0002] The present invention relates to the results of the project (Project No. 20132020102170) "Electric load regulation and 200kwh-class ESS recovery flow battery stack and system development as backup for power outage disasters" carried out with the support of small and medium-sized enterprise technology core development projects. Background technique [0003] Actively conduct research and development of redox flow batteries as high-capacity secondary batteries. A redox flow battery is a system that charges and discharges through the oxidation (Oxidation)-reduction (Reduction) of active substances in the electrolyte, and is an electrochemical storage device that directly stores the chemical energy of ...

Claims

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Application Information

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IPC IPC(8): H01M4/86H01M4/96H01M8/18
CPCH01M4/8605H01M4/96H01M8/188Y02E60/50
Inventor 李恩淑郑芝英金恩聪金太亨金到勋梁民知
Owner JNTG