Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Nickel-hydrogen power battery

A power battery and nickel-metal hydride technology, which is applied in the field of high-power battery preparation, can solve the problems of high output power, high temperature resistance, low temperature resistance of the battery, which have not been reported, the battery high-power discharge performance is reduced, and can not work, etc. Small expansion, avoiding internal short circuit and excellent performance

Inactive Publication Date: 2003-12-24
NANKAI UNIV
View PDF4 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above methods generally require the use of complex battery electrode fabrication techniques, such as surface treatment, high temperature heating, etc., and there are no reports on the high output power, high temperature resistance, and low temperature resistance of the battery.
When the Ni-MH battery is working at high temperature or low temperature, the negative electrode is easy to precipitate hydrogen, resulting in a significant decline in the high-power discharge performance of the battery, or even failure to work.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Nickel-hydrogen power battery
  • Nickel-hydrogen power battery
  • Nickel-hydrogen power battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Positive active material spherical Ni(OH) 2 Preparation of composite materials with additives. The present invention adopts chemical precipitation crystal growth method to prepare spherical Ni(OH) 2 And add as Y 2 O 3 , CeO 2 , CoO, ZnO, TiO 2 , Yb 2 O 3 And other additives to make the positive electrode composite active material. Spherical Ni(OH) 2 Low density Ni(OH) with irregular shapes 2 In comparison, it has relatively high density and good filling fluidity. Therefore, spherical Ni(OH) is used 2 As an active material, it can increase the filling amount per unit volume of the electrode, thus increasing the electrode capacity accordingly.

[0026]Add Y 2 O 3 , CoO and Yb 2 O 3 (Mass ratio 1: 1: 1) spherical Ni(OH) 2 , The mass ratio of the additive amount is 4%.

[0027] In the preparation process, nickel sulfate, sodium hydroxide, ammonia and metered additives are generally selected as raw materials; NiSO 4 The relative density of the solution is controlled at 1.05g / cm ...

Embodiment 2

[0029] AB 3 Preparation of a new type of hydrogen storage alloy. AB 3 Type alloy structure contains AB 5 And AB 2 Unit, such as AB 5 +2AB 2 = 3AB 3 . LaCaMgNi 6 Mn 2 Al i As an example, the X-ray diffraction analysis with silicon powder is as figure 2 As shown, figure 2 For AB 3 X-ray diffraction analysis of new hydrogen storage alloy and silicon powder. Because of AB 3 The c-axis of the alloy lattice is long, and it can contain Mm, Ca, Mg, Ti on the A side, so the theoretical hydrogen storage capacity can reach 500mAh / g, and the actual measurement can generally reach 360-420mAh / g, and the price is relatively It is inexpensive and has good cycle life. In the alloy preparation process, first melt the volatile metals Ca and Mg with Al to prepare a master alloy, and then add other components in a vacuum induction furnace (1200°C) for induction smelting, and in a water-cooled copper crucible Casting into alloy ingots. Under the protection of argon, the alloy ingot is crushed into al...

Embodiment 3

[0032] MmCaMgNi 6 Co 1 Mn 1 Al 1 Alloy electrode. See Example 2 for specific operation steps. Add C 60 , BN and Y 2 O 3 (Mass ratio 1: 1: 1) MmCaMgNi 6 Co 1 Mn 1 Al 1 In the alloy electrode, the mass ratio of additives is 4%. The prepared electrode has excellent charge and discharge performance, see image 3 , image 3 C added for 4% 60 , BN and Y 2 O 3 MmCaMgNi 6 Co 1 Mn 1 Al 1 Electrode charge and discharge curve.

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
Thicknessaaaaaaaaaa
Diameteraaaaaaaaaa
Heightaaaaaaaaaa
Login to View More

Abstract

The battery consists of anode, diaphragm, electrolyte and cathode. The active material of the anode is composed of spherical Ni(OH)2 grains and oxide additive of transition metal. The active materialof the cathode is composed of the additive C60, BN or transition metal oxide and AB3 type hydrogen stored alloy. In formula AB3, A includes at least two elements among mixed rare earths Mm, Ca, Mg, Ti, and B includes at least three elements among Ni, Co, Mn, Cu and Al. spherical Ni (OH) 2 anode material with small expansion, high temperature resistant and high utilization ratio is prepared by using the crystal growth method of chemical deposition. The hydrogen stored alloy with high capacity, large hydrogen diffusion coefficient as well as antioxidant and anticorrosion, low self-discharge and long service life. The battery is suitable for large scale of production.

Description

Technical field [0001] The invention relates to the preparation of a high-power battery, which is a nickel-hydrogen power battery. Background technique [0002] The research and development of new high-energy batteries has been recognized as the driving force for the rapid development of information technology, new energy, new materials, environmental protection and other high-tech industries in the 21st century. It has become a priority technology and has constituted a huge dual-use market. . In the field of new high-energy batteries, high-power, high-temperature, and low-temperature resistant nickel-hydrogen power batteries have become a new highlight. This is because the overall performance of nickel-hydrogen power batteries can better meet high-power startup and wide operating temperature ranges. And so on. [0003] At present, the development of high-power nickel-metal hydride power batteries is a hot research topic at home and abroad. However, there are few patents applied ...

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): H01M4/24H01M4/28H01M4/30
CPCY02E60/124Y02E60/10
Inventor 陈军李锁龙陶占良
Owner NANKAI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com