Supercharge Your Innovation With Domain-Expert AI Agents!

Spherical shape nickel hydroxide for high-temperature nickle electric cell

A spherical nickel hydroxide and nickel battery technology, applied in nickel oxide/nickel hydroxide, battery electrodes, circuits, etc., can solve the problems of charge and discharge performance and cycle performance degradation, and achieve stable performance and excellent high temperature performance.

Inactive Publication Date: 2009-02-04
HUNAN CORUN NEW ENERGY CO LTD
View PDF1 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the charge-discharge performance and cycle performance of the common power Ni-MH batteries currently used are sharply reduced when the external ambient temperature is >40°C.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Calcium fluoride is coated on the surface of conventional spherical nickel hydroxide. In the conventional spherical nickel hydroxide, the mass percent content of cobalt is 4%, zinc is 0.4%, and the average particle size is 7-9 microns; the coated metal Calcium accounts for 0.5% of the total mass of the product.

[0016] preparation:

[0017] ① Stock solution configuration: calcium nitrate 0.05mol / l; sodium fluoride 0.1mol / l; sodium hydroxide 0.5mol / l.

[0018] ②Reaction solution preparation: add water, conventional spherical nickel hydroxide to the reaction kettle, add aqueous sodium hydroxide solution to adjust the pH value of the reaction solution, the weight ratio of spherical nickel hydroxide to water is 0.4, and the pH value of the reaction solution is 10.0-11.0, The temperature of the reaction solution was adjusted to 50°C.

[0019] ③Reaction: Under stirring conditions, the raw materials prepared in step ① are continuously pumped into the reaction kettle with a ...

Embodiment 2

[0024] Aluminum fluoride is coated on the surface of conventional spherical nickel hydroxide, and in the conventional spherical nickel hydroxide, the mass percent content of cobalt is 3%, zinc is 0.1%, and the average particle diameter is 7-9 microns; the coated metal Aluminum accounts for 0.2% of the total mass of the product.

[0025] preparation:

[0026] ①Stock solution configuration: Aluminum nitrate 0.4mol / l; Potassium fluoride 2mol / l; Potassium hydroxide 2.4mol / l.

[0027] ②Reaction solution preparation: add water, conventional spherical nickel hydroxide in the reaction kettle, add sodium hydroxide aqueous solution to adjust the pH value of the reaction solution, the weight ratio of spherical nickel hydroxide and water is 1.5, and the pH value of the reaction solution is 9-10. The temperature of the reaction solution was adjusted to 30°C.

[0028] ③Reaction: Under the condition of stirring, the raw materials prepared in step ① are continuously pumped into the reaction...

Embodiment 3

[0033] Barium fluoride is coated on the surface of conventional spherical nickel hydroxide. In the conventional spherical nickel hydroxide, the mass percentage content of cobalt is 2%, zinc is 0.8%, and the average particle size is 7-9 microns; the coated metal Barium accounts for 0.8% of the total mass of the product.

[0034] preparation:

[0035] ① Stock solution configuration: barium nitrate 1.5mol / l; sodium fluoride 2mol / l; sodium hydroxide 5mol / l.

[0036] ②Reaction solution preparation: add water, conventional spherical nickel hydroxide into the reaction kettle, add aqueous sodium hydroxide solution to adjust the pH value of the reaction solution, the weight ratio of spherical nickel hydroxide and water is 1.0, and the pH value of the reaction solution is 8-8.5, The temperature of the reaction solution was adjusted to 70°C.

[0037] ③Reaction: Under the condition of stirring, the raw materials prepared in step ① are continuously pumped into the reaction kettle with a ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
The average particle sizeaaaaaaaaaa
Discharge capacityaaaaaaaaaa
Discharge capacityaaaaaaaaaa
Login to View More

Abstract

The invention discloses spherical nickel hydroxide used in a high temperature nickel battery and is characterized in that the surface of conventional spherical nickel hydroxide is coated with insoluble metal villaumite; the metal is chosen from the following metals of calcium, aluminium and barium; in the conventional spherical nickel hydroxide, the weight percentage content of cobalt is of 3 to 5 percent and the content of zinc is of 0.1 to 1 percent; the average particle size of the chosen conventional spherical nickel hydroxide is of 7 to 9 micro-meters; the content of the coating metal is of 0.2 to 0.8 percent of the total quantity of the product. The product of the spherical nickel hydroxide has good high temperature performance and is used as a positive active material of the nickel battery; the battery capacity is not obviously decreased when the charging and discharging are done repeatedly under the working temperature of 60 DEG C.

Description

technical field [0001] The invention relates to a positive electrode active material spherical nickel hydroxide for a nickel battery, in particular to a spherical nickel hydroxide suitable for a high temperature nickel battery positive electrode active material. technical background [0002] With the development of electric vehicles and hybrid vehicles, higher technical requirements have been put forward for nickel-based batteries, especially nickel-metal hydride batteries used in power supplies. The battery can basically be used normally when the external ambient temperature is high (>40°C), that is, the high temperature resistance performance of the battery is required. However, the charge-discharge performance and cycle performance of the common power nickel-metal hydride batteries currently used in the external environment temperature > 40°C are sharply reduced. Studies have shown that the main reason for the decline in the performance of nickel-metal hydride batt...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C01G53/04H01M4/52
CPCY02E60/10
Inventor 张聚东贺持缓何亚登戴桂中陈晓智蒋素斌皮耀彩
Owner HUNAN CORUN NEW ENERGY CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com