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Preparation method of zinc negative electrode material of zinc-nickel secondary battery

A secondary battery, zinc anode technology, applied in battery electrodes, nickel storage batteries, alkaline storage batteries, etc., can solve the problems of growth, dendrite shedding, zinc anode expansion, etc., to extend service life, prevent expansion, and meet green environmental protection. Effect

Active Publication Date: 2020-04-14
河南创力新能源科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is to provide a preparation method of the zinc negative electrode material of the zinc-nickel secondary battery. Dendrite growth and other problems, while effectively prolonging the service life of zinc-nickel secondary batteries

Method used

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  • Preparation method of zinc negative electrode material of zinc-nickel secondary battery
  • Preparation method of zinc negative electrode material of zinc-nickel secondary battery
  • Preparation method of zinc negative electrode material of zinc-nickel secondary battery

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Dissolve zinc chloride, tin tetrachloride, and copper chloride in deionized water according to the ratio of element molar ratio Zn:Sn:Cu=1:1:1, carry out precipitation reaction with sodium hydroxide solution, and filter and wash the product , dried and placed in a tube furnace, heated to 850°C at a heating rate of 20°C / min under a nitrogen atmosphere, kept for 1 hour and then cooled to room temperature with the furnace, and finally the target product zinc-nickel secondary battery zinc negative electrode material was obtained ZnCuSnO 4 crystal, the zinc anode material ZnCuSnO 4 Crystals can be used as negative electrode active materials or additives for zinc-nickel secondary batteries, which can effectively improve the cycle stability of zinc-nickel secondary batteries;

[0019] The zinc anode material ZnCuSnO 4 Add 5wt% conductive graphite to the crystal, and use HPMC and SBR binder to prepare a slurry with a viscosity of 10000cP and coat it on a density of 320g / m 2 ...

Embodiment 2

[0021] Dissolve zinc chloride, tin tetrachloride, and copper chloride in deionized water according to the ratio of element molar ratio Zn:Sn:Cu=1.5:0.5:1, carry out precipitation reaction with sodium hydroxide solution, and filter and wash the product , dried and placed in a tube furnace, heated to 850°C at a heating rate of 20°C / min under a nitrogen atmosphere, kept for 1 hour and then cooled to room temperature with the furnace, and finally the target product zinc-nickel secondary battery zinc negative electrode material was obtained Zn 1.5 Cu 0.5 SnO 4 crystal, the zinc anode material Zn 1.5 Cu 0.5 SnO 4 Crystals can be used as negative electrode active materials or additives for zinc-nickel secondary batteries, which can effectively improve the cycle stability of zinc-nickel secondary batteries;

[0022] The zinc anode material Zn 1.5 Cu 0.5 SnO 4 Add 5wt% conductive graphite to the crystal, and use HPMC and SBR binder to prepare a slurry with a viscosity of 10000c...

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Abstract

The invention discloses a preparation method of a zinc negative electrode material of a zinc-nickel secondary battery. The method specifically comprises the following steps: 1, dissolving soluble zincsalt, soluble tin salt and soluble copper salt into deionized water; adding a precipitator for precipitation; filtering, washing and drying, and then putting the material into a tubular furnace; heating to 700-1050 DEG C in an inert atmosphere, and keeping the temperature for 1-10 hours; and cooling to room temperature along with the furnace to obtain the ZnxCuySnO4 crystal containing zinc, tin and copper of the zinc negative electrode material of the zinc-nickel secondary battery. The zinc negative electrode material ZnxCuySnO4 crystal of the zinc-nickel secondary battery is used as a negative electrode active substance or an additive of the zinc-nickel secondary battery, the power and specific energy performance of the zinc-nickel secondary battery can be improved, the zinc negative electrode of the zinc-nickel secondary battery is prevented from expanding, falling off and dendritic growth, and the service life of the zinc-nickel secondary battery is further prolonged.

Description

technical field [0001] The invention belongs to the technical field of preparation of zinc negative electrode materials for zinc-nickel secondary batteries, and in particular relates to a preparation method of zinc negative electrode materials for zinc-nickel secondary batteries. Background technique [0002] The currently available square secondary batteries are mainly lead-acid batteries, nickel-hydrogen batteries and lithium-ion batteries. Among them, the specific energy of lead-acid batteries is low, generally only reaching 30~35Wh / Kg, and the cycle life is about 300~350 times. It needs a long charging time, and lead is a toxic heavy metal. If it is not handled properly during the production process and recycling, it will cause serious pollution to the environment, and its production and use have been restricted by countries all over the world. Due to the low working voltage and large self-discharge at high temperature, the nickel-hydrogen battery needs to use a large am...

Claims

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Application Information

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IPC IPC(8): H01M4/48H01M4/62H01M10/30
CPCH01M4/48H01M4/62H01M4/628H01M10/30Y02E60/10
Inventor 杨玉锋徐平李群杰李喜歌王晓燕明兰彭英长
Owner 河南创力新能源科技股份有限公司