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Microemulsion flow battery electrolyte and preparation method thereof

A liquid flow battery and microemulsion technology, applied in fuel cells, aqueous electrolytes, non-aqueous electrolytes, etc., can solve problems such as high viscosity, high cost, and low ion conductivity, and achieve increased concentration, high economic value, and easy scale-up The effect of mass production

Active Publication Date: 2021-03-19
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, non-aqueous electrolytes can provide a wider electrochemical window, and are expected to obtain higher density and voltage, but their cost is much higher than that of water, and they have the disadvantages of high viscosity and low ion conductivity.

Method used

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  • Microemulsion flow battery electrolyte and preparation method thereof
  • Microemulsion flow battery electrolyte and preparation method thereof
  • Microemulsion flow battery electrolyte and preparation method thereof

Examples

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preparation example Construction

[0035] A method for preparing an electrolyte for a microemulsion flow battery, comprising the following steps:

[0036] S1. First, according to the concentration requirements of the water phase support electrolyte, mix the W phase with the water phase support electrolyte to configure the support electrolyte aqueous solution, and then according to the concentration requirements of the oil phase support electrolyte, mix the O phase with the oil phase support electrolyte and electrochemical active substances Obtain supporting electrolyte organic solution;

[0037] S2. Prepare a surfactant, the surfactant is a main surfactant and a co-surfactant, and the mass ratio of the main surfactant and the co-surfactant is 70-85:15-30;

[0038] S3. Mix the supporting electrolyte aqueous solution, supporting electrolyte organic solution and surfactant according to the ratio, stir under a magnetic stirrer, control the ambient temperature at 20°C-25°C, and continuously feed N into the above sol...

Embodiment

[0040] A method for preparing an electrolyte for a microemulsion flow battery, comprising the following steps:

[0041] S1. Prepare 1M KNO 3 Aqueous solution, to obtain supporting electrolyte aqueous solution, and then 0.5M ferrocene and 0.5M Bu 4 NBF 4 Join in the toluene solution to obtain supporting electrolyte organic solution;

[0042] S2. Prepare a surfactant with Tween-20 as the main surfactant and 1-butanol as the co-surfactant. The mass ratio of these two substances is 70-85:15-30;

[0043] S3. Mix the supporting electrolyte aqueous solution, supporting electrolyte organic solution and surfactant according to the ratio of 46:46:8, stir with a magnetic stirrer for 0.5 hours, control the ambient temperature at 20°C, and continuously feed N into the above solution 2 , to obtain the electrolyte of the microemulsion flow battery.

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Abstract

The invention discloses a microemulsion flow battery electrolyte. The microemulsion flow battery electrolyte comprises a microemulsion used as an electrolyte solvent, a supporting electrolyte and an electrochemical active substance, wherein the microemulsion comprises a water phase (W phase), an oil phase (O phase) and a surfactant (S phase); a water-phase supporting electrolyte and an oil-phase supporting electrolyte are respectively added into the water phase and the oil phase to optimize the ionic conductivity of the electrolyte; specific electrochemical active substances are added into theoil phase, so that energy storage and release are completed in the electrochemical reaction process. The microemulsion flow battery electrolyte has the characteristics of high ionic conductivity andwide electrochemical window, and is beneficial to enhancing the energy density of the flow battery.

Description

technical field [0001] The invention relates to the technical field of flow battery manufacturing, in particular to a microemulsion flow battery electrolyte and a preparation method thereof. Background technique [0002] Social development's demand for clean energy drives the growth of solar and wind power generation, but these two power generation methods are extremely dependent on time and weather. If the non-dispatchable renewable energy exceeds 20% of the power generation capacity without energy storage devices, it will lead to grid instability. Therefore, renewable energy generation needs to reduce its power output burden through other auxiliary methods, such as configuring on-demand Gas turbine peak power plants for power generation, etc. However, this method also increases environmental pollution and loss of natural resources; or stores electrical energy in the form of mechanical energy, chemical energy, or thermal energy during the peak production period. At present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/18H01M8/00
CPCH01M8/00H01M8/188H01M2300/0002H01M2300/0017Y02E60/50
Inventor 彭静肖烨王宏春
Owner BEIHANG UNIV
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