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Alkaline battery positive pole material and preparing method

A positive electrode material, alkaline battery technology, applied in the direction of battery electrodes, circuits, electrical components, etc., can solve the problems of complex preparation process and poor storage performance, and achieve simple and easy-to-obtain materials, perfect storage performance, Mg-O bond strong effect

Inactive Publication Date: 2008-11-26
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of not only its β-nickel oxyhydroxide has better for existing alkaline battery cathode material to have oxygen evolution self-discharge reaction, cause the long-term storage performance not good, and preparation process is complicated etc. Storage stability, and the material preparation method is simple, a kind of alkaline battery positive electrode material and preparation method that are easy to industrialized production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: the NiSO of 1.0mol / L 4 solution and 1.0mol / L MgSO 4 The solution is mixed uniformly according to the mass ratio of nickel and magnesium to 92:8 to form a nickel-magnesium solution and a 2mol / L NaOH solution. The complexing agent is a 13mol / L concentrated ammonia solution to control a certain flow ratio, and use a flow pump to flow into the reaction In the still, stir at a medium speed at the same time, control the pH value in the reaction kettle to keep it in the range of 10±0.5, control the reaction temperature at 60°C in a water bath, react for 8h, and then wash the green reaction product twice with distilled water until with BaCl 2 The solution does not detect SO 4 2- filter, and dry at 120°C for 10 hours. Then the nickel-magnesium hydroxide product prepared above is dispersed into the KOH solution of 1mol / L, and at the same time, according to the mass ratio of the oxidizing agent to the nickel-magnesium hydroxide is 3:1, the solid powder K 2 S 2 ...

Embodiment 2

[0024] Embodiment 2: the Ni(NO of 2.0mol / L 3 ) 2 solution and 2.0mol / L Mg(NO 3 ) 2 The solution is uniformly mixed into a nickel-magnesium solution according to the mass ratio of nickel and magnesium of 95:5, and 4mol / L NaOH alkaline solution, and the complexing agent is a 13mol / L concentrated ammonia solution to control a certain flow ratio, and use a flow pump to flow in parallel In the reaction kettle, stir at a medium speed at the same time, control the pH value in the reaction kettle to remain within the range of 10.50±0.5, control the reaction temperature at 60°C in a water bath, react for 10 hours, and then wash the green reaction product 3 times with distilled water, Filter and dry at 120°C for 10h. Then the nickel-magnesium hydroxide product prepared above is dispersed into the KOH solution of 2mol / L, and at the same time, the mass ratio of the oxidizing agent to the nickel-magnesium hydroxide is 3.5:1, and the solid powder K 2 S 2 o 8 , stirred vigorously, and ...

Embodiment 3

[0025] Embodiment 3: the NiCl of 1.0mol / L 2 solution and 1.0mol / L MgCl 2 The solution is mixed uniformly according to the mass ratio of nickel and magnesium of 85:15 to form a nickel-magnesium solution and a 2mol / L NaOH solution. The complexing agent is a 13mol / L concentrated ammonia solution to control a certain flow ratio, and use a flow pump to flow into the reaction In the kettle, stir at a medium speed at the same time, control the pH value in the reaction kettle to keep it in the range of 11±0.5, control the reaction temperature at 50°C in a water bath, react for 8 hours, and then wash the green reaction product 3 times with distilled water until with AgNO 3 Filter the solution until no Cl- is detected, and dry at 120°C for 12 hours. Then the nickel-magnesium hydroxide product prepared above is dispersed into the KOH solution of 1mol / L, and at the same time, according to the mass ratio of the oxidizing agent to the nickel-magnesium hydroxide is 3:1, the solid powder K ...

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Abstract

This invention relates to a positive material of alkali batteries and a preparation method, which provides a beta-alkyl Ni2O doped with Mg, the molecular formula is Ni(1-x) MgxO(1-x)OH(1+x), X is greater or equal to 3% and smaller than or equal to 15%, in preparation, solutions of Ni2SO4, NiNO3 or NiCl is mixed with solutions of MgSO4, MgNO3 or MgCl2 to NiMg solution then to parallel-flow with alkali solution and a complexing agent to be cleaned until SO32-, NO3-1 or Cl-1 can not be tested by solution then to be filtered and dried to get MgNi2(OH)2 which is added into KOH solution and oxidant is added to be cleaned till SO42- can not be tested by BaCl2 solution then to be filtered and dried.

Description

technical field [0001] The invention relates to an alkaline battery, in particular to a positive electrode material and a preparation method of the alkaline battery. Background technique [0002] In recent years, with the widespread popularization of electronic products such as digital cameras, electric toys, and household appliances, higher and higher requirements have been put forward for the high-current discharge performance of batteries. However, the voltage of traditional zinc-manganese batteries drops very quickly under the condition of high-current discharge, which cannot meet the high-voltage and high-current discharge requirements of these small portable electronic devices. Thereby, there is an urgent need to develop a novel battery suitable for high-power discharge. As Zhongyin (Ningbo) Battery Co., Ltd. proposes a kind of nickel oxyhydroxide that adopts more than 80% (weight) as the active material in the patent application of CN1405908, its zinc An alkaline pri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/52C01G53/04
CPCY02E60/124Y02E60/10
Inventor 廖代伟王新符显珠林敬东
Owner XIAMEN UNIV
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