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Semi-solid flow battery

A liquid flow battery, semi-solid technology, applied in the field of electrochemistry, can solve the problems of high cost of vanadium metal ion electrolyte, difficult ion exchange membrane technology, insufficient capacity, etc., to achieve improved ion passability, low price, and shortened charging the effect of time

Inactive Publication Date: 2018-11-06
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Clean energy power generation is mainly based on wind power and photovoltaic power generation. Based on natural advantages, the northwest region of my country vigorously develops wind power and photovoltaic power generation. However, due to the lack of suitable energy storage devices for huge power generation, there has been a large number of power abandonment phenomena.
At present, the relatively well-developed all-vanadium redox flow battery has been used in photovoltaic power generation system energy storage and wind power generation energy storage demonstration, but all-vanadium redox flow battery has technical difficulties in ion exchange membrane, high cost of vanadium metal ion electrolyte and corrosion. The problems of strong stability, low energy density and large volume still need to be solved urgently
Although lithium-ion battery technology has made great progress and has been successfully applied to the power source of electric vehicles, it still needs breakthroughs in terms of high cost and low safety.
Lead-acid batteries have the advantage of low cost, but their cycle life is low, and the environmental pollution problems caused by the manufacturing and recycling process also hinder their application as grid power storage systems
[0003] In recent years, dual-ion batteries using graphite as the positive and negative electrode materials and ionic liquid as the electrolyte have the advantages of low cost and high safety. question

Method used

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Examples

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Embodiment 1

[0031] A semi-solid flow battery, such as Figure 1-Figure 4 As shown, it includes a battery tank 4 that can allow the mixed slurry to enter and exit. The battery tank 4 includes an upper tank body 14 and a lower tank body 15, and an isolation film 1 is arranged between the upper tank body 14 and the lower tank body 15. The bottom of the upper tank body 14 and the lower tank body 15 and the side close to the isolation membrane 1 are evenly covered with a metal current collector 6, and the metal current collector 6 extends to the outside of the upper tank body 14 or the lower tank body 15; The upper tank body 14 and the lower tank body 15 are respectively connected with pipelines 3, and the pipelines 3 communicate with the upper tank body 14 and the lower tank body 15 respectively, and the pipelines 3 are provided with a peristaltic pump 2 and a mixing slurry tank 5. The mixed slurry tank 5 is provided with mixed slurry.

[0032] Wherein, the upper tank body 14 and the lower t...

Embodiment 2

[0043] A method for preparing a semi-solid flow battery, all operations are performed in a glove box filled with an inert gas, the steps are:

[0044] The first step, preparation of electrode slurry: prepare DMPICl-AlCl with a molar ratio of 1:1 3Ionic liquid, and then add carbon nanotubes-SP1 graphite with a mass ratio of 1:1, and stir on a magnetic stirrer until the slurry is evenly mixed and appears in a slurry state.

[0045] The second step is the preparation of electrode pole pieces: clean and decontaminate the nickel foil (metal current collector, thickness 0.03mm) with alcohol; cut out a suitable nickel foil current collector according to the size of the battery tank, and fix it inside the battery tank.

[0046] The third step, the preparation of the battery separator: according to the size of the battery tank, cut out the glass fiber not exceeding the outer diameter of the battery tank and not smaller than the inner diameter of the battery tank, and use the configured...

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Abstract

The invention discloses a semi-solid flow battery. The semi-solid flow battery comprises a battery groove enabling a mixed slurry to go in and out, wherein the battery groove comprises an upper groovebody and a lower groove body, an isolation membrane is arranged between the upper groove body and the lower groove body, a metal collecting body is paved at one side, close to the isolation membrane,of the bottom of each of the upper groove body and the lower groove body, the metal collecting body extends outside the upper groove body or the lower grove body, sides of the upper groove body and the lower groove body are separately connected with pipelines, the pipelines are communicated with the other sides of the upper groove body and the lower groove body, the pipeline is provided with a peristaltic pump and a mixed slurry pool, and the mixed slurry pool is internally provided with a mixed slurry. Due to the semi-solid flow device, the electric capacity of a battery pack can be increased by increasing volume of graphite particles and electrolyte mixture slurry easily; low-contamination, highly safe ion liquid with high conduction efficiency is adopted as an electrolyte, so that a low-cost battery system with long service life, large capacity and high security can be manufactured.

Description

technical field [0001] The invention belongs to the technical field of electrochemistry, and in particular relates to a semi-solid liquid flow battery. Background technique [0002] In recent years, with the enhancement of people's awareness of environmental protection, traditional thermal power generation is less and less accepted by people, so clean energy power generation has become the mainstream research and development direction. Clean energy power generation is mainly based on wind power and photovoltaic power generation. Based on natural advantages, the northwest region of my country vigorously develops wind power and photovoltaic power generation. However, due to the lack of suitable energy storage devices for huge power generation, a large number of power abandonment phenomena have occurred. At present, the relatively well-developed all-vanadium redox flow battery has been used in photovoltaic power generation system energy storage and wind power generation energy ...

Claims

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Application Information

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IPC IPC(8): H01M8/18H01M4/96
CPCH01M4/96H01M8/188Y02E60/50
Inventor 林孟昌陈新正刘帅李遥
Owner SHANDONG UNIV OF SCI & TECH
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