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Electrolyte using aminosulfonic acid as solvent and redox cell using the same

A sulfamic acid, electrolyte technology, applied in the field of electrochemistry, can solve problems such as limitations

Inactive Publication Date: 2012-04-25
周德璧
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In sulfuric acid solution, the stability of V(II), V(III), and V(IV) increases with temperature rise, but V(V) will produce thermal precipitation effect at 40°C and above, so it is used for The preparation method of the electrolyte of the all-vanadium redox flow battery is limited by the solubility of vanadium in different valence states in the range of 10°C-40°C. The preparation of a stable electrolyte is still an important technical problem for the development of the all-vanadium redox flow battery.

Method used

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  • Electrolyte using aminosulfonic acid as solvent and redox cell using the same
  • Electrolyte using aminosulfonic acid as solvent and redox cell using the same
  • Electrolyte using aminosulfonic acid as solvent and redox cell using the same

Examples

Experimental program
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Effect test

Embodiment

[0020] Note: In the following examples, SA means sulfamic acid.

example 1

[0021] Example 1, positive electrolyte Ce (SA) 3 preparation.

[0022] Weigh an appropriate amount of sulfamic acid and Ce 2 (CO 3 ) 3 . Put sulfamic acid in a small beaker and add appropriate amount of distilled water, and Ce 2 (CO 3 ) 3 Add to the solution and stir until completely dissolved. Can prepare Ce(SA) up to 1mol / L 3 solution.

[0023] Prepare 50ml of 0.5mol / L Ce(SA) 3 +1.0 mol / L of SA.

[0024] ① Weigh Ce 2 (CO 3 ) 3 7.99g.

[0025] ② Take the weighed sulfamic acid and add a small amount of distilled water to a 250ml beaker.

[0026] ③The weighed Ce 2 (CO 3 ) 3 Add all to ② beaker.

[0027] ④Stir until it dissolves completely.

[0028] ⑤ Add distilled water to make up to 50ml, that is.

example 2

[0029] Example 2, negative electrode liquid Zn (SA) 2 preparation.

[0030] Weigh appropriate amount of sulfamic acid and ZnO. Put sulfamic acid in a small beaker and add appropriate amount of distilled water, add ZnO into the solution, stir until completely dissolved.

[0031] With 200ml 1.0mol / L Zn(SA) 2 .

[0032] ①Weigh 16.28g of ZnO.

[0033] ② Take sulfonic acid and add appropriate amount of distilled water to a 250ml beaker.

[0034] ③Put all the weighed ZnO into the beaker ②.

[0035] ④Stir until it dissolves completely.

[0036] ⑤ Add distilled water to make up to 200ml. Instantly.

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Abstract

The invention discloses an electrolyte using aminosulfonic acid as a solvent and a redox cell using the electrolyte. The electrolyte contains cerium ions, vanadium ions or zinc ions. The electrolyte containing cerium ions can be used as an anode electrolyte, the electrolyte containing zinc ions can be used as a cathode electrolyte, and the anode electrolyte and cathode electrolyte make up a zinc-cerium redox cell. Vanadium ions exist in different valence conditions in the electrolyte containing vanadium ions. The electrolyte mainly containing tetravalent and pentavalent vanadium ions can be used as an anode electrolyte, the electrolyte mainly containing divalent and trivalent vanadium ions can be used as a cathode electrolyte, and the anode electrolyte and cathode electrolyte make up a vanadium ion redox cell. The anode and cathode electrolytes can be cross-matched to make up a zinc-vanadium cell or a vanadium-cerium cell. According to the invention, the electrolyte uses aminosulfonic acid as a solvent, and ammonia ions and alkali mental ions are added in the electrolyte for increasing the conductivity of the electrolyte.

Description

technical field [0001] The invention relates to the field of electrochemistry, in particular to a method for using cerium ions Ce(III) / Ce(IV) or vanadium ions V(IV) / V(V) as positive electrodes, and using Zn(II) / Zn or V(II) / V(III) is a redox battery with negative electrode active material, and the above-mentioned positive electrode and negative electrode electrolyte use sulfamic acid as a solvent. Background technique [0002] In today's energy field, the development and utilization of renewable energy such as solar energy and wind energy has attracted more and more attention. In order to achieve the stability of power supply, it is necessary to develop large-scale energy storage technology. Secondary batteries are an important energy storage technology, among which redox flow batteries include zinc-bromine batteries, sodium polysulfide / bromine batteries, vanadium batteries, etc., which have been researched and developed due to their special advantages such as long life, low ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/18
CPCY02E60/528Y02E60/50
Inventor 周德璧熊凤娇唐超谢志鹏
Owner 周德璧
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