Integrated pole dual-pole board for oxidation deoxidization liquid energy-storing battery and its preparation

A liquid flow energy storage battery and bipolar plate technology, applied in battery electrodes, electrode manufacturing, electrode carriers/collectors, etc., can solve the problem of electrode materials that are not suitable for all-vanadium redox energy storage flow batteries, and are not suitable for large-scale The application of the graphite plate is corroded and other problems, and the effect of high practical value, good conductivity and uniform distribution is achieved.

Inactive Publication Date: 2007-08-01
DALIAN RONGKE POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In short, V +4 / V +5 power pair and V +2 / V +3 The reversibility of the electrochemical reaction on the surface of the metal electrode is poor, and the cost is high, the corrosion resistance is poor, and it is not suitable for large-scale applications
[0012] 2. Carbon electrode: V +4 / V +5 power pair and V +2 / V +3 The oxidation-reduction reaction on the surface of the graphite electrode is reversible, but after a period of charge-discharge cycle, the graphite plate of the positive electrode is corroded, and the electrode made of carbon fiber and carbon cloth will also have a similar phenomenon.
V +4 / V +5 The electrochemical reaction of the electron pair on the surface of the glassy carbon electrode also shows irreversibility, so the above-mentioned carbon materials are not suitable as electrode materials for all-vanadium redox energy storage flow batteries

Method used

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  • Integrated pole dual-pole board for oxidation deoxidization liquid energy-storing battery and its preparation
  • Integrated pole dual-pole board for oxidation deoxidization liquid energy-storing battery and its preparation
  • Integrated pole dual-pole board for oxidation deoxidization liquid energy-storing battery and its preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Take 1g of graphite powder, 0.5g of graphite fiber, 0.5g of carbon black, and 0.5g of PVDF, ball mill for 10 hours, add 1.25g of dimethylformamide, add 20ml of ethanol, put it into an ultrasonic bath for 30 minutes, and mix the mixture The uniform liquid is poured into the mold frame placed on the mechanically ground pure graphite bipolar plate, and the solvent is evaporated at 60°C. After the solvent evaporates, a bipolar plate with a viscous conductive layer is obtained, and then it is combined with The acid-treated graphite felt was hot-pressed at 180° C. with a pressure of 0.1 MPa for 10 minutes to obtain an integrated electrode bipolar plate that can be used for a redox flow energy storage battery.

Embodiment 2

[0046] Take 0.46g of gold powder, 0.23g of graphite fiber, 0.23g of carbon black, 0.4g of polypropylene powder, ball mill for 15 hours, add 40ml of isopropanol, then put it into an ultrasonic pool for 30 minutes, and inject the obtained uniformly mixed liquid In the mold frame of the flexible graphite bipolar plate that has been chemically pickled, the solvent is evaporated at 60 ° C. After the solvent evaporates, the flexible graphite bipolar plate with a sticky conductive layer and the gas phase oxidation treated The graphite felt is hot-pressed at 160° C. with a pressure of 0.05 MPa for 15 minutes to obtain an integrated electrode bipolar plate that can be used for a redox flow energy storage battery.

Embodiment 3

[0048] Take 0.3g of silver powder, 0.15g of graphite fiber, 0.15g of carbon black, 0.67g of PTFE powder, ball mill for 3 hours, add 40ml of ethylene glycol, then put it into an ultrasonic pool for 30 minutes, and inject the obtained uniformly mixed liquid into the In the mold frame on the electrolytic acid-washed conductive plastic bipolar plate, the solvent is evaporated at 60°C. After the solvent evaporates, the conductive plastic bipolar plate with a viscous conductive layer and the alkali-treated graphite The felt is hot-pressed at 345° C. with a pressure of 0.05 MPa for 25 minutes to obtain an integrated electrode bipolar plate that can be used for a redox flow energy storage battery.

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Abstract

The invention relates to the oxidation-reduction liquid stored-energy cell, especially integral electrode dipole plate and preparation, the integral electrode dipole plate includes: multiple-arch electrode and dipole plate, viscous conducting layer which is between the dipole plate and multiple-arch electrode, that is the multiple-arch electrode and dipole plate are felt to the dipole plate via the viscous conducting material. The advantages of the invention are: the integral electrode dipole plate can decrease the contact resistance between the multiple-arch electrode and dipole plate evidently, increase the voltage efficiency and energy efficiency of the oxidation-reduction liquid stored-energy cell, at the same time the distribution of the electrolyte in electrode is more even; the conductivity of the integral electrode dipole plate is perfect, the electrochemistry property is high, the chemical property is stable, it possesses high practicality value and wide application foreground.

Description

technical field [0001] The invention relates to a redox flow energy storage battery in chemical power source energy storage technology, in particular to an integrated electrode bipolar plate for a redox flow energy storage battery and its preparation. Background technique [0002] Electric energy is an indispensable secondary energy for human life and production in modern society. With the development of social economy and the improvement of people's living standards, the demand for electric power is increasing day by day. Therefore, it is necessary to continuously develop various power stations and power transmission and distribution systems to meet the needs of life and production for power. In order to make full use of various power generation systems and achieve stable power supply, it is extremely important to develop large-scale and efficient power storage technologies. The application fields of large-scale high-efficiency liquid flow power storage systems are firstly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86H01M4/64H01M4/62H01M4/88H01M4/04
CPCY02E60/50Y02E60/10
Inventor 张华民钱鹏陈剑文越华衣宝廉
Owner DALIAN RONGKE POWER
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