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Zinc-air battery and application thereof

An air battery and biomass technology, applied in the direction of fuel cell half-cells and primary battery-type half-cells, can solve the problems of low charge and discharge efficiency and high production cost, and achieve high charge and discharge efficiency, low production cost, The effect of excellent desalination performance

Inactive Publication Date: 2018-02-09
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Zinc-air batteries can provide an open circuit voltage above 1.2V, and have the advantages of high volume specific energy, stable discharge voltage, long storage life, and no pollution to the environment. However, the existing zinc-air batteries have low charge and discharge efficiency, and production relatively high cost

Method used

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  • Zinc-air battery and application thereof
  • Zinc-air battery and application thereof
  • Zinc-air battery and application thereof

Examples

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preparation example Construction

[0019] Wherein, the preparation method of the biomass-derived porous carbon material may include the following steps: mixing biomass powder and potassium bicarbonate together, and placing them in a tube furnace for high-temperature calcination at 400-800°C, and then calcination The product is ground into powder, washed with hydrochloric acid solution, then suction-filtered, washed with deionized water until neutral, and then dried to obtain a biomass-derived porous carbon material. Specifically, the biomass powder and potassium bicarbonate can be mixed together according to the mass ratio of the biomass powder and potassium bicarbonate at a ratio of 1 to 4:1, and placed in a tube furnace for high-temperature heating under a nitrogen atmosphere. Calcining, the heating rate is 10°C / min, when the calcining temperature reaches 800°C, keep it warm for 3 hours, then cool the calcined product to room temperature and grind it into powder, then use hydrochloric acid solution (the hydroc...

Embodiment 1

[0027] A kind of zinc-air battery, its preparation method can comprise the following steps:

[0028] Step A1, wash and dry the pods and use a high-speed pulverizer to crush them into pod powder; take 6g of pod powder as biomass powder and add 1.5g of potassium bicarbonate to a mortar for grinding, mix well, and place in a tubular Carry out high-temperature calcination in the furnace under a nitrogen atmosphere with a heating rate of 10°C / min. When the calcination temperature reaches 800°C, keep it warm for 3 hours, then cool the calcined product to room temperature and grind it into powder, and then use hydrochloric acid solution (the hydrochloric acid solution It is prepared by mixing concentrated hydrochloric acid with a mass fraction of 37% and deionized water in equal volumes), washed three times, filtered with suction, washed with deionized water until neutral, and dried at 60°C to obtain a biomass-derived porous carbon Material.

[0029] Step B1, using the biomass-deriv...

Embodiment 2

[0034] A kind of zinc-air battery, its preparation method can comprise the following steps:

[0035] Step A2, wash and dry the pods, and use a high-speed pulverizer to crush them into pod powder; take 6g of pod powder as biomass powder and add 2g of potassium bicarbonate into a mortar for grinding, mix evenly, and place in a tube furnace Carry out high-temperature calcination in a nitrogen atmosphere, the heating rate is 10°C / min, when the calcination temperature reaches 800°C, keep it warm for 3 hours, then cool the calcined product to room temperature and grind it into powder, and then use hydrochloric acid solution (the hydrochloric acid solution is made of Concentrated hydrochloric acid with a mass fraction of 37% mixed with equal volumes of deionized water) was washed three times, filtered with suction, washed with deionized water until neutral, and dried at 60°C to obtain a biomass-derived porous carbon material .

[0036] Step B2, using the biomass-derived porous carbo...

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Abstract

The invention discloses a zinc-air battery and an application thereof. The zinc-air battery adopts a biomass derived porous carbon material as the negative electrode material; the preparation method of the biomass derived porous carbon material comprises the steps of performing mixing on biomass powder and potassium bicarbonate, putting the mixture into a tubular furnace to be subjected to high-temperature calcining at a temperature of 400-800 DEG C; and next, performing grinding on the calcined product into powder, then performing washing by adopting a hydrochloric acid solution, next, performing suction filtration, then performing washing by deionized water until a neutral state is reached, and then performing drying to obtain the biomass derived porous carbon material. The zinc-air battery can be used as the driving power supply of capacitive deionization (CDI) and used for desalting or removing heavy metal ions from water. The zinc-air battery disclosed in the invention is relatively high in charging and discharging efficiency, high in stability, low in production cost, simple in preparation process and can be used as the driving power supply of CDI desalting.

Description

technical field [0001] The invention relates to the field of zinc-air batteries, in particular to a zinc-air battery and its application. Background technique [0002] A zinc-air battery is a primary battery that uses carbon materials to absorb oxygen in the air as the cathode, zinc as the anode, and ammonium chloride or caustic alkali solution as the electrolyte. Zinc-air batteries can provide an open circuit voltage above 1.2V, and have the advantages of high volume specific energy, stable discharge voltage, long storage life, and no pollution to the environment. However, the existing zinc-air batteries have low charge and discharge efficiency, and production The cost is relatively high. Contents of the invention [0003] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a zinc-air battery and its application, which not only has high charge and discharge efficiency and strong stability, but also has low production cost and simpl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M12/06H01M4/96
CPCH01M12/06H01M4/96
Inventor 张海民赵翠娇刘国强张显赵惠军
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI