Anode material of energetic alkaline primary cell and preparation method for anode

A battery cathode, alkaline technology, applied to the electrodes of primary batteries, battery electrodes, circuits, etc., can solve the problem of β-NiOOH discharge utilization rate without considering the improvement of β-NiOOH cathode proton conductivity

Inactive Publication Date: 2005-06-15
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the problem of improving the proton conductivity of the β-NiOOH positive electrode to fully improve the discharge utilization of β-NiOOH has not been considered in these published patent applications.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Preparation of doped β-NiOOH:

[0032] Mix 0.5mol / L nickel salt solution, 2mol / L zinc salt solution, 1.5mol / L cobalt salt solution according to the ratio of Ni:Zn:Co=100:4:4, and then mix with 5mol / L NaOH The solution and 14mol / L ammonia complexing agent are reacted in parallel under stirring. The pH of the solution is controlled to be 10, the reaction temperature is 55℃, and the reaction time is 18h to obtain β-Ni(OH) doped with Zn and Co. 2 .

[0033] The prepared doped β-Ni(OH) 2 Doped β-Ni(OH) with 1Kg 2 :The ratio of 50L NaOH solution is added to 4mol / L NaOH solution, and then the ratio doped β-Ni(OH) 2 1.5 times excess K 2 S 2 O 8 The strong oxidant is used for oxidation, the temperature is controlled at 50°C, and the doped β-NiOOH is obtained by filtering and washing after reacting for 12 hours.

[0034] Combine doped β-NiOOH with electrolytic MnO 2 Mix as active material, add conductive agent graphite and additive TiO 2, Mix uniformly, roll sheet, granulate, press r...

Embodiment 2

[0038] Preparation of doped β-NiOOH:

[0039] Mix 1mol / L nickel salt solution, 0.5mol / L zinc salt solution, 0.5mol / L cobalt salt solution according to the ratio of Ni:Zn:Co=100:6:3, and then mix with 10mol / L KOH The solution and 13mol / L ammonia complexing agent are reacted in parallel under stirring. The pH of the solution is controlled to 14, the reaction temperature is 40℃, and the reaction time is 24h to obtain β-Ni(OH) doped with Zn and Co. 2 .

[0040] The prepared doped β-Ni(OH) 2 Doped β-Ni(OH) with 1Kg 2 :The ratio of 100L NaOH solution is added to 0.5mol / L NaOH solution, and then the ratio doped β-Ni(OH) 2 1.2 times excess KClO 3 The strong oxidant is used for oxidation, the temperature is controlled at 60°C, and the doped β-NiOOH is obtained by filtering and washing after 18 hours of reaction.

[0041] Combine doped β-NiOOH with electrolytic MnO 2 Mix as active material, add conductive agent metal cobalt powder and additive Ba(OH) 2 , Mix uniformly, roll sheet, granulate...

Embodiment 3

[0045] Preparation of doped β-NiOOH:

[0046] Mix 1.5mol / L nickel salt solution, 1.5mol / L zinc salt solution and 1mol / L cobalt salt solution according to the ratio of Ni:Zn:Co=100:8:5, and then mix with 1mol / L NaOH The solution and the 12mol / L ammonia complexing agent are reacted in parallel under stirring. The pH of the solution is controlled to 12, the reaction temperature is 65℃, and the reaction time is 12h to obtain β-Ni(OH) doped with Zn and Co. 2 .

[0047] The prepared doped β-Ni(OH) 2 Doped β-Ni(OH) with 1Kg 2 :The ratio of 70L KOH solution is added to 10mol / L KOH solution, and then the ratio doped β-Ni(OH) 2 1.6 times excess KMnO 4 The strong oxidant is used for oxidation, the temperature is controlled at 25°C, and the doped β-NiOOH is obtained by filtering and washing after reacting for 20 hours.

[0048] Combine doped β-NiOOH with electrolytic MnO 2 Mix as active material, add conductive agent metal nickel powder and additive La 2 O 3 , Mix uniformly, roll sheet, granu...

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Abstract

Constituents of anode material include active material of mixing adulterated beta-NiOOH and electrolytic MnO, as well as conduction agent and additive as auxiliary element. The method for preparing anode includes following steps: first, preparing beta-Ni(OH)2 with Zn, Co being doped; adding the prepared beta-Ni(OH)2 into 0.5-10 mol / L NaOH or KOH solution; then adding strong oxidizing agent more than doped beta-Ni(OH)2 into the said solution, oxidizing and filtering obtains doped beta-NiOOH; mixed beta-NiOOH and electrolytic MnO is as active material; adding conduction agent and additive, after steps of mixing, pressing tablets, granulating and clamping ring, the anode material is prepared. Advantages are: good storage quality and stability, large discharge capacity, improved anode performance of additive, prevalent price. Moreover, self-discharge analysis of anode is prevented, and intermittent discharge capability is raised.

Description

Technical field [0001] The invention relates to an alkaline battery, especially a high-energy alkaline primary battery positive electrode material and a preparation method of the positive electrode. technical background [0002] Although the widely used alkaline manganese battery has greatly improved the discharge capacity and other aspects than the ordinary zinc manganese battery, but because of its uneven discharge curve, low discharge capacity of the high-voltage section and other shortcomings, it can not meet the increasingly popular digital High-voltage and high-current discharge requirements for portable electronic devices such as cameras and video cameras. Lithium-ion batteries and nickel-metal hydride batteries require chargers, which are inconvenient to use and costly. For this reason, it was proposed to use β-nickel oxyhydroxide (β-NiOOH) to replace the manganese dioxide (MnO 2 ) To make a new type of high-energy alkaline primary battery, which can discharge at high vol...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H01M4/08H01M4/50H01M4/52H01M4/62
Inventor廖代伟符显珠李俊林敬东卢成慧
OwnerXIAMEN UNIV