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A light charging redox flow battery

A liquid flow battery and anolyte technology, applied in fuel cells, photovoltaic power generation, electrolytic capacitors, etc., can solve the problems of unstable output power of solar cells and unstable power system, and achieve remarkable originality and light energy conversion The effect of high efficiency and compact structure

Inactive Publication Date: 2019-01-15
INST OF APPLIED CHEM JIANGXI ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the influence of sunlight intensity and illumination time, the output power of solar cells is not very stable, so large-scale introduction of solar photovoltaic power generation may cause instability of the power system

Method used

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  • A light charging redox flow battery
  • A light charging redox flow battery
  • A light charging redox flow battery

Examples

Experimental program
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Effect test

Embodiment 1

[0026] (1) Preparation of sensitized semiconductor electrodes: Nano-TiO 2 The colloid was uniformly scraped and coated on the conductive glass, placed in a muffle furnace, and sintered at 450 ° C for 0.5 h. After cooling naturally to below 50 ° C, the sample was immersed in the pre-prepared dye (0.50 mmol per liter of N719 anhydrous ethanol solution), soaked for 24 h, took out, washed with absolute ethanol, and dried to obtain a photoanode.

[0027] (2) The catholyte is composed of sodium iodide (0.1 mole per liter), tert-butylpyridine (0.1 mole per liter) in propylene carbonate solution. The composition of the anolyte is an aqueous solution of sodium tungstate (0.01 mole per liter) and sodium perchlorate (0.1 mole per liter)

[0028] (3) According to the above structure, assemble the sensitized semiconductor electrode, the ion exchange membrane, and the current collector, inject electrolyte, package, and connect wires to form a light-rechargeable flow battery.

[0029] Unde...

Embodiment 2

[0031] (1) Preparation of sensitized semiconductor electrodes. According to the implementation case 1, the first step is implemented.

[0032] (2) The composition of the anolyte is an aqueous solution of sodium phosphotungstate (0.01 mole per liter) and sodium perchlorate (0.1 mole per liter). The catholyte consisted of sodium iodide (0.1 mol per liter), tert-butylpyridine (0.1 mol per liter) in propylene carbonate.

[0033] (3) According to the above structure, assemble the sensitized semiconductor electrode, the ion exchange membrane, and the current collector, inject electrolyte, package, and connect wires to form a light-rechargeable flow battery.

[0034] Under the light intensity of 100 milliwatts per square centimeter, after photocharging for 5 minutes, the light source was turned off, the discharge cut-off voltage was 0.2 volts, the discharge current density was 0.025 milliamperes per square centimeter, and the flow rate was 30 microliters per minute. The flow batter...

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Abstract

A light charging redox flow battery comprises a sensitized semiconductor electrode (1), a cathode electrolyte (7), an anode electrolyte (8), a diaphragm (2), a current collector (6), a liquid storagetank (4), a pump (3) and a liquid flow battery reaction chamber. By sensitizing semiconductor electrode, solar energy can be directly used to charge cathode electrolyte and anode electrolyte, and solar energy can be directly converted into chemical energy, which can be stored in liquid storage tank in the form of redox electrolyte, and can be reused in the form of electric energy at any time. Theinvention has the advantages of optimizing the combination of the existing dye-sensitized solar cell and the liquid-flow cell, not only having the advantages of light energy conversion function of thedye-sensitized solar cell, friendly environment and low cost, but also having the advantages of relatively independent output power and capacity of the liquid-flow cell, flexible system design and the like.

Description

technical field [0001] The invention relates to a light-charged redox flow battery, which belongs to the technical field of photoelectrochemical batteries. Background technique [0002] Energy issues have always been a major issue restricting the development of human society. With the depletion of fossil energy, new energy and renewable energy have attracted widespread attention. Solar energy has the advantages of environmental friendliness and abundant resources, and is considered to be the safest, greenest and most ideal alternative energy source. Dye-sensitized solar cells have the advantages of high photoelectric conversion efficiency, low cost, simple process, easy large-scale production and environmental friendliness, and have become a hot spot in solar energy research. Due to the influence of sunlight intensity and illumination time, the output power of solar cells is not very stable, so the large-scale introduction of solar photovoltaic power generation may cause t...

Claims

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Application Information

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IPC IPC(8): H01M8/18H01G9/20H01G9/22H01G9/28B82Y30/00
CPCB82Y30/00H01G9/2027H01G9/22H01G9/28H01M8/188Y02E10/542Y02E60/50
Inventor 晏南富石劲松崔红敏柳跃伟
Owner INST OF APPLIED CHEM JIANGXI ACAD OF SCI
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