Preparation method of neutral iron-sulfur double-flow battery
A liquid flow battery and neutral solution technology, which is applied in the direction of fuel cells, aqueous electrolytes, regenerative fuel cells, etc., can solve the problems of high corrosion and high cost, and achieve the effect of reducing corrosion problems, low cost, and simple process
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0040] The preparation method of the neutral iron-sulfur dual-flow battery in this embodiment includes the following steps:
[0041] 1. The treatment method of the diaphragm material:
[0042] Put Nafion 212 diaphragm in 1mol·L -1 In the KOH aqueous solution, keep the temperature at 80°C for 1.5h, take it out and soak it in 2mol·L -1 KCl aqueous solution for 7 hours, then washed with deionized water, soaked in deionized water for later use, the thickness of the Nafion 212 diaphragm is 50 μm.
[0043] 2. Processing method of positive and negative electrode materials:
[0044] Put the foamed nickel mesh in an aqueous solution of potassium sulfide with a molar concentration of 1.5M, boil it for 4 hours until the surface of the foamed nickel mesh turns black evenly, then wash it with deionized water, and dry it in a vacuum oven at 80°C for 12 hours as a negative electrode The electrodes are spare, and the positive electrode uses the original polyacrylonitrile-based porous carbo...
Embodiment 2
[0049] The preparation method of the neutral iron-sulfur dual-flow battery in this embodiment includes the following steps:
[0050] 1, the processing method of diaphragm material: with embodiment 1;
[0051] 2, the processing method of positive and negative electrode materials: with embodiment 1;
[0052] 3. Preparation of electrolyte:
[0053] Prepare 0.4mol·L respectively -1 K 3 [Fe(CN) 6 ] solution and 2.0mol·L -1 K 2 S solution, the supporting electrolyte used is 2.0mol L -1 KCl aqueous solution, each take 25mL and put it in the liquid storage tank.
[0054] In this embodiment, the iron-sulfur battery under high concentration is at 60mA·cm -2 It can still work at a high current density, and has high cycle stability. After a long cycle, it still maintains a high capacity, and the Coulombic efficiency is close to 100%. Its good battery cycle performance promotes the development of commercial applications of flow batteries.
[0055] Such as figure 2 As shown, the...
Embodiment 3
[0058] The preparation method of the neutral iron-sulfur dual-flow battery in this embodiment includes the following steps:
[0059] 1. The treatment method of the diaphragm material:
[0060] Put the Nafion 212 diaphragm in 2mol·L -1 In the NaOH aqueous solution, keep the temperature at 70°C for 2h, take it out and soak it in 1mol·L -1 NaCl aqueous solution for 6h, then washed with deionized water, and soaked in deionized water for later use. The thickness of the Nafion212 diaphragm is 50 μm.
[0061] 2. Processing method of positive and negative electrode materials:
[0062] The nickel foam mesh was placed in a molar concentration of 2M Na 2 In S aqueous solution, boil for 3 hours until the surface of the foamed nickel mesh turns black evenly, then wash it with deionized water, and dry it in a vacuum oven at 90°C for 10 hours, and use it as the negative electrode for spare use, and the positive electrode uses the original polyacrylonitrile base Porous carbon felt.
[00...
PUM
| Property | Measurement | Unit |
|---|---|---|
| Thickness | aaaaa | aaaaa |
| Thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More