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Flow battery

An electrochemical and battery technology, applied in electrochemical generators, fuel cells, battery electrodes, etc., can solve problems such as high price, low battery performance, and easy corrosion of conductive parts

Inactive Publication Date: 2012-11-21
罗臬 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention provides a liquid flow battery with 3D transition period elements after use, which can solve the problems of high price, low battery performance, and easy corrosion of conductive parts in the prior art.

Method used

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Examples

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Effect test

example 2

[0090] Example 2: Complexed iron / bromine flow battery.

[0091] negative electrode:

[0092] positive electrode:

[0093] At the beginning of charging, 50 ml of negative electrolyte (1M K 3 [Fe(CN) 6 ] And 1M NaOH solution) were injected into the negative electrode structure. 50 ml of catholyte solution (1M NaBr and 1M NaOH solution) was injected into the positive electrode structure. Constant current charging 20mA / cm 2 About 1 hour. Figure 4 Given that the battery is at 20mA / cm 2 Charging and discharging curve characteristics. by Figure 4 It can be seen that the charge and discharge voltage of the battery is relatively low, about 0.6 to 0.7V.

example 3

[0094] Example 3: Complexed copper / bromine flow battery.

[0095] negative electrode:

[0096] positive electrode:

[0097] m is usually 4, n is usually 2, water molecules and hydroxide radicals can also participate in coordination. At the beginning of charging, 75 ml of anolyte solution, 1M complex ion [Cu(NH 3 ) 4 (H 2 O)x] 2+ The solution is injected into the negative structure. 75 milliliters of catholyte and 1M NaBr solution are injected into the positive electrode structure. Constant current charging 20mA / cm 2 About an hour. Figure 4 Given that the battery is at 20mA / cm 2 Charging and discharging curve characteristics. by Figure 5 It can be seen that the charge and discharge voltage of the battery is relatively reasonable, which is below the electrolysis voltage of water, but very close. The steps of charge and discharge voltage are relatively gentle, showing good dynamic characteristics.

[0098] The invention provides a flow battery for storing electric energy by elec...

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Abstract

The present invention provides an electrochemical flow battery for electric energy storage, the said battery uses anode reactive materials (the material being oxidized during battery discharge) selected from complexed ionic form of late 3d transition metals, i.e., Mn, Fe, and Cu. The battery has significantly low cost due to use of these relative inexpensive metals.

Description

Technical field [0001] The invention relates to a flow battery for storing electric energy by an electrochemical method. Background technique [0002] Due to the volatility and uncertainty of most renewable energy sources, such as wind and solar power generation, large-scale electrical energy storage is a necessary part of the effective use of renewable energy. An economic and reliable energy storage technology is also urgently needed in microgrid applications. Redox flow battery (RFB) is a potential energy storage technology that can be used in wind or solar power stations. [0003] Power plants such as ships and submarines also require high-efficiency large-scale battery energy. [0004] In the prior art, Skyllas-Kazacos et al. describe a redox flow battery using alum, which has very low cross-penetration between catholyte and anolyte (US Patent No. 4786567). Zito et al. describe a flow battery based on iron-sulfur electric pairs (US Patent No. 5,422,197). Skyllas-Kazacos et al...

Claims

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Application Information

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IPC IPC(8): H01M8/18H01M4/86
CPCH01M4/90H01M8/20H01M4/9041Y02E60/528H01M8/188Y02E60/50
Inventor 罗臬杨立章崔骥
Owner 罗臬
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