Cerium ion electrolyte using silver ion as anode catalyst and preparation method thereof

A technology of cerium ion and electrolyte, which is applied in the application field of Ag+ in the redox reaction of Ce3+/Ce4+ pair, can solve the problems of high voltage loss and low reaction rate, achieve good conductivity, simple preparation method, and improve circulation performance effect

Inactive Publication Date: 2010-12-01
TIANJIN JIUJU ENERGY TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005]Ce3+/Ce4+ charge and discharge process of the battery as positive active material Among them, the positive reaction is the oxidation of Ce3+ and the reduction of Ce4+ respectively.

Method used

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  • Cerium ion electrolyte using silver ion as anode catalyst and preparation method thereof
  • Cerium ion electrolyte using silver ion as anode catalyst and preparation method thereof
  • Cerium ion electrolyte using silver ion as anode catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Weigh 28.79g of methanesulfonic acid and add it into 40mL of deionized water and stir evenly to form a methanesulfonic acid solution.

[0036] (2) Slowly add 22.11 g of cerium carbonate into the above methanesulfonic acid solution and stir evenly, and control the reaction temperature below 60°C.

[0037] (3) Weigh 10.00g of methanesulfonic acid and add it to 10mL of deionized water, then add 0.0276g of silver carbonate, and stir evenly to obtain a silver carbonate solution. Cool the solution obtained in step (2) to room temperature and add it to the above-mentioned silver carbonate solution, then add deionized water to make the volume to 100mL to obtain Ag + The concentration is 0.001mol×L -1 , a cerium methanesulfonate electrolyte with a cerium ion concentration of 1mol / L.

[0038] The resulting electrolyte is used as the positive electrolyte, and the negative electrolyte uses ZnSO 4 solution, assembled into a Zn-Ce battery. The positive and negative electrodes...

Embodiment 2

[0040] (1) Weigh 28.79g of methanesulfonic acid and add it into 30mL of deionized water and stir evenly to form a methanesulfonic acid solution.

[0041] (2) Slowly add 22.11 g of cerium carbonate into the above methanesulfonic acid solution and stir evenly, and control the reaction temperature below 60°C.

[0042] (3) Weigh 10.00 g of methanesulfonic acid and add it to 10 mL of deionized water, then add 0.1656 g of silver carbonate, and stir evenly to obtain a silver carbonate solution. Cool the solution obtained in step (2) to room temperature and add it to the above-mentioned silver carbonate solution, then add deionized water to make the volume to 100mL to obtain Ag + The concentration is 0.006mol×L -1 , a cerium methanesulfonate electrolyte with a cerium ion concentration of 1mol / L.

[0043] The resulting electrolyte is used as the positive electrolyte, and the negative electrolyte uses ZnSO 4 solution, assembled into a Zn-Ce battery. The positive and negative electrode...

Embodiment 3

[0045] (1) Weigh 28.79g of methanesulfonic acid and add it into 30mL of deionized water and stir evenly to form a methanesulfonic acid solution.

[0046] (2) Slowly add 22.11 g of cerium carbonate into the above methanesulfonic acid solution and stir evenly, and control the reaction temperature below 60°C.

[0047] (3) Weigh 10.00 g of methanesulfonic acid and add it to 10 mL of deionized water, then add 0.276 g of silver carbonate, and stir evenly to obtain a silver carbonate solution. Cool the solution obtained in step (2) to room temperature and add it to the above-mentioned silver carbonate solution, then add deionized water to make the volume to 100mL to obtain Ag + The concentration is 0.01mol×L -1 , a cerium methanesulfonate electrolyte with a cerium ion concentration of 1mol / L.

[0048] The resulting electrolyte is used as the positive electrolyte, and the negative electrolyte uses ZnSO 4 solution, assembled into a Zn-Ce battery. The positive and negative electrode...

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Abstract

The invention discloses cerium ion electrolyte using a silver ion as an anode catalyst and a preparation method thereof and aims to provide electrolyte capable of effectively improving the reaction rate of oxidation reduction of Ce3+/Ce4+ electron pairs and improving the charging and discharging efficiency and cycle performance of cells and a preparation method thereof. The electrolyte comprises organic acid-containing or inorganic acid-containing aqueous solution using a cerium ion as a cation, wherein Ag+ content of the aqueous solution is 0.001 to 0.01mol/L. The organic acid is methylsulfonic acid, and the inorganic acid is sulfuric acid or nitric acid. The Ag+ added in the electrolyte is used as the anode catalyst. The cerium ion is a rare-earth element ion and forms a complex with acid radicals and solvent molecules in the solution. The addition of the Ag+ can influence the coordination of the cerium ion, promote the electron transport of the cerium ion on the surface of an electrode, improve the electrochemical performance of the Ce3+/Ce4+ electron pairs, and effectively improve the charging and discharging efficiency and cycle performance of cells.

Description

technical field [0001] The present invention relates to the field of electrochemistry, and more specifically, relates to a method for using cerium ions Ce 3+ / C 4+ Addition of Ag in Redox Batteries with Redox Couple as Cathode Active Material + Electrolyte as catalyst and preparation method thereof, and Ag + in Ce 3+ / C 4+ Application of electricity to redox reactions. 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 efficient large-scale energy storage technology. Secondary batteries are an important energy storage technology. Among them, redox flow batteries are zinc-bromine batteries, sodium polysulfide / bromine batteries, vanadium batteries, etc., which have been researched and developed due to their special advantages in the direction of large-scale power s...

Claims

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Application Information

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IPC IPC(8): H01M10/38
CPCY02E60/10Y02P70/50
Inventor 周德壁
Owner TIANJIN JIUJU ENERGY TECH DEV
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