Preparation method and preparation device of liquid flow battery electrolyte
A technology of electrolyte and hydrochloric acid solution, which is applied in fuel cells, acidic electrolytes, aqueous electrolytes, etc.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
no. 1 approach
[0050] In the first embodiment of the present invention, a method for preparing an electrolyte for a vanadium redox flow battery is mainly provided. Including the following steps:
[0051] (i) Make it contain VO 2+ The hydrochloric acid solution flows through the positive electrode, so that the reducing gas flows through the negative electrode, so that VO 2+ A reduction reaction occurs to produce V 2+ 的HCl solution;
[0052] (ii) Make the above generated contain V 2+ Hydrochloric acid solution and raw material V 2 O 5 Reaction produces containing VO 2+ Hydrochloric acid solution,
[0053] Optionally, (iii) the obtained in ii) contains VO 2+ The hydrochloric acid solution is led back to the positive electrode to continuously produce V 2+ Hydrochloric acid solution; and
[0054] (iv) Will contain V 2+ Hydrochloric acid solution with VO 2+ Mixed with hydrochloric acid solution to prepare vanadium electrolyte.
[0055] Material V 2 O 5
[0056] In the process of preparing the initial raw m...
no. 2 approach
[0100] In the second embodiment of the present invention, an apparatus for performing the above-mentioned first embodiment is provided.
[0101] The device includes an electrochemical reaction part and a chemical reaction part.
[0102] The electrochemical reaction part includes a positive electrode, a negative electrode, and a separator, and the inside of the part is divided into at least two reaction chambers via the separator, a positive electrode reaction chamber for positive electrode reaction and a negative electrode reaction chamber for negative electrode reaction.
[0103] The positive electrode reaction chamber includes a positive electrode, and the material of the positive electrode includes at least the above The positive electrode materials disclosed in. The negative electrode reaction chamber includes at least a negative electrode, and the negative electrode includes at least The negative electrode disclosed in.
[0104] In the process of electrochemical reaction, conta...
Embodiment
[0138] Add 2.3L of concentrated hydrochloric acid to the reaction dish, stir with Teflon stirrer, and slowly add 1.32kg of low purity V 2 O 5 And 5.5ml of high purity glycerol. According to the following reaction formula:
[0139] 7V 2 O 5 +C 3 H 8 O 3 +28HCl→14VOCl 2 +3CO 2 +18H 2 O (i)
[0140] VOCl obtained 2 In solution, tested by UV-Vis, VOCl 2 The total content is 13.5 mol.
[0141] This VOCl 2 The solution, all used as the positive electrode electrolyte, is slowly flowed through the positive electrode graphite felt by a pump; at the same time, the negative electrode is filled with hydrogen, the total amount is about 400L.
[0142] The gas diffusion layer is carbon paper, the catalyst is platinum dispersed in carbon black, and the membrane is a proton exchange membrane.
[0143] According to the following reaction formula
[0144] VO 2+ +H 2 →V 2+ +H 2 O (ii)
[0145] After the two completely react, the generated V 2+ In solution, tested by UV-Vis, V 2+ The total content is 13.2 mo...
PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More