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Method for preparing electrolyte for vanadium battery

A vanadium battery and electrolyte technology, which is applied in the field of preparing electrolyte for vanadium batteries, can solve the problems of high cost, high investment cost, and unsuitability for large-scale industrial production and application, and achieves the convenience of production and manufacturing, saving production costs, and shortening the preparation time. the effect of time

Active Publication Date: 2012-05-23
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The above method uses VOSO 4 As the catholyte, VOSO 4 The product after reduction is used as the negative electrode electrolyte. Although there are many advantages mentioned above, VOSO 4 Compared with other vanadium salts, the price is relatively expensive. When used on a large scale, the initial investment cost is huge, and it is not suitable for large-scale industrial production applications

Method used

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  • Method for preparing electrolyte for vanadium battery
  • Method for preparing electrolyte for vanadium battery
  • Method for preparing electrolyte for vanadium battery

Examples

Experimental program
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Effect test

Embodiment 1

[0038] 1) 1170 grams of NH with a mesh number of 50 4 VO 3 After drying at 50°C for 1 hour, with 702 g NH 4 HCO 3 After mixing evenly, pour it into an alumina crucible, move it into a vacuum atmosphere furnace, and heat up to 250°C at a rate of 2°C / min for the first calcination. The calcination time is 1 hour, and then heat up to Carry out the second calcination at 650°C, and cool with the furnace after calcination for 3 hours. After the temperature in the furnace cools down to room temperature, take out the crucible and pour out the black V 2 o 3 Crystals with a mass of 755 grams. After crushing the crystals, pass through a 100-mesh sieve for later use.

[0039] V obtained in this step 2 o 3 The XRD pattern of the powder is as follows figure 1 As shown, it can be seen from the figure that the structure of the compound is correct, which is V 2 o 3 Powder.

[0040] 2) Take 562 grams of step 1) gained 100 mesh V 2 o 3 Powder, added to 5 liters of 5.5M sulfuric acid...

Embodiment 2

[0044] 1) 1755 grams of NH with a mesh number of 200 4 VO 3 After drying at 150°C for 4 hours, with 1400 g NH 4 HCO 3 After mixing evenly, pour it into an alumina crucible, move it into a vacuum atmosphere furnace, heat up to 250°C at a rate of 10°C / min for the first calcination, and calcine for 3 hours, then raise the temperature to 650°C at a rate of 10°C / min °C for the second calcination, and after 6 hours of calcination, it was cooled with the furnace. After the temperature in the furnace cools down to room temperature, take out the crucible and pour out the black V 2 o 3 Crystal with a mass of 1130 grams. After crushing the crystals, pass through a 150-mesh sieve for later use.

[0045] V obtained in this step 2 o 3 The XRD pattern of powder and figure 1 There is no substantial difference, which proves that the structure of the product obtained in this step is correct, which is V 2 o 3 Powder, no longer described here.

[0046] 2) Take 562 grams of step 1) gai...

Embodiment 3

[0050] 1) Mix 1400 grams of NH with a mesh number of 100 4 VO 3 After drying at 120°C for 2 hours, with 1170 g NH 4 HCO 3 After mixing evenly, pour it into an alumina crucible, move it into a vacuum atmosphere furnace, and heat up to 250°C at a rate of 5°C / min for the first calcination, calcining for 2 hours, and then raise the temperature to 650°C at a rate of 5°C / min °C for the second calcination, and after 4 hours of calcination, it was cooled with the furnace. After the temperature in the furnace cools down to room temperature, take out the crucible and pour out the black V 2 o 3 Crystals with a mass of 903 grams. After crushing the crystals, pass through a 50-mesh sieve for later use.

[0051] V obtained in this step 2 o 3 The XRD pattern of powder and figure 1 There is no substantial difference, which proves that the structure of the product obtained in this step is correct, which is V 2 o 3 Powder, no longer described here.

[0052] 2) Take 562 grams of step...

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Abstract

The invention discloses a method for preparing electrolyte for a vanadium battery. The method comprises the following steps of: 1) drying ammonium metavanadate, uniformly blending the dried ammonium metavanadate with ammonium bicarbonate, raising the temperature to be between 200 and 300 DEG C, calcining for the first time, raising the temperature to be between 600 and 700 DEG C, calcining for the second time, and cooling to obtain V2O3; 2) performing a reaction on the obtained V2O3 in a sulfuric acid aqueous solution, and completing the reaction to obtain a solution containing V2 (SO4)3; and 3) adding V2O5 into the solution containing the V2(SO4)3 to react, and completing the reaction to obtain a sulfuric acid aqueous solution containing equimolar trivalent vanadium ions and tetravalent vanadium ions, namely the electrolyte for the vanadium battery. According to the method, the low-cost ammonium metavanadate is served as a raw material for preparing the electrolyte, thus the production cost is saved, the preparation time is shortened, and the quality of products is also extremely easy to control.

Description

technical field [0001] The invention belongs to the technical field of energy storage batteries, and relates to a method for preparing an electrolyte solution for a vanadium battery. Background technique [0002] With the continuous increase of people's demand for new energy, especially renewable energy, the utilization of wind energy, solar energy and other technologies is becoming more and more extensive. However, due to the unstable and discontinuous power generation of renewable energy such as wind energy and solar energy, it is necessary to develop and construct supporting electric energy storage (storage) devices or power stations to ensure the continuity and stability of power generation and power supply. Research on high-efficiency energy storage technology to improve the quality of power supply has become one of the major topics of current scientific research. All-vanadium flow energy storage battery technology is one of the developing high-efficiency energy storag...

Claims

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Application Information

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IPC IPC(8): H01M8/18
CPCY02E60/528Y02E60/50
Inventor 林茂财余晴春孙洋洲管涛梁嘉
Owner CHINA NAT OFFSHORE OIL CORP
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