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Vanadium ion liquid flow accumulator battery

A liquid flow battery and vanadium ion technology, applied in secondary batteries, regenerative fuel cells, secondary battery manufacturing, etc., can solve the problems of volume limitation, battery failure, falling off, etc., and achieve the effect of high rate discharge cycle life

Inactive Publication Date: 2006-10-18
フォンリエレクトリックグループカンパニーリミテッド
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Problems solved by technology

[0004] It can be seen that the reaction is accompanied by the state change of the reaction substance, and the densities of the three solid substances are different. PbO 2 9.375g / cm 3 , Pb is 11.35g / cm 3 , PbSO 4 6.2g / cm 3 , so there will be a significant volume change during the charging and discharging process, especially when deep charging and deep discharging. This volume change will easily cause the active material of the battery to soften and fall off. will fail
Because the active material of the existing storage battery is solid, the active material, electrode and electrolyte must be together to function. Its output power and stored energy are limited by the surface area of ​​the plate and the volume of the battery case.

Method used

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  • Vanadium ion liquid flow accumulator battery
  • Vanadium ion liquid flow accumulator battery
  • Vanadium ion liquid flow accumulator battery

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[0026] specific implementation

[0027] Two electrolyte pools 12 and several layers of battery cells are formed. The electrolyte pools 12 hold anode and catholyte solutions 9 and 10 respectively, and the anolyte solution 9 contains 9mol / L of H 2 SO 4 and 1~2mol / L (VO 2 ) 2 SO 4 Solution (optimally 2mol / L), the balance is water; catholyte 10 contains 9mol / L of H 2 SO 4 And 1~2mol / L VSO 4 Solution (optimally 2mol / L), the balance is water. The several layers of battery cells are stacked together, and each battery cell is formed by stacking bipolar electrodes 3, felt membranes 4, flow frames 2, separators 1, flow frames 2, felt membranes 4, and bipolar electrodes 3 in sequence , the diaphragm 1 separates the single cell into positive and negative two half-units; each electrolyte pool 12 is equipped with a pump 13, connected to each half-unit with a sealed pipeline 11; the flow frame 2 is a sealed pipeline 11 that flows through each half-unit The chann...

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Abstract

The present invention relates to a vanadium ion fluid-flow battery. Said invention is characterized by that on the electrochemical principle it uses liquid vanadium ion as active substance, and makes the vanadium ions with different valences produce oxidation reduction reaction to store or release electric energy.

Description

technical field [0001] The invention relates to a flow battery in the field of new energy, in particular to a vanadium ion flow battery. Background technique [0002] Most of the existing storage batteries fail due to problems such as softening and falling off of the active material, because the active materials are all solid, such as lead-acid battery yang: lead dioxide, yin: sponge lead. They are manufactured in the following way: after metal lead is ground into powder, add water and sulfuric acid to make lead paste, and then apply it on the lead grid. 2 ), sponge lead (Pb), these active substances must be firmly combined with the lead grid to serve the purpose of electron transport when they undergo energy conversion. From its reaction equation: [0003] <chemistry num="001"> <chem file="200510031451_cml001.xml" / > < / chemistry> [0004] It can be seen that the reaction is accompanied by the state change of the reaction subst...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/00H01M8/18H01M10/04
CPCY02E60/10Y02P70/50
Inventor 宋永江
Owner フォンリエレクトリックグループカンパニーリミテッド
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