Welcome to Whole Win (Beijing) Advanced Materials Co., Ltd.
Products
Company Product
This product has obtained the following government funding:
Technology Innovation Fund for Small and Medium-sized Technology-based Enterprises in 2002
Energy Saving and New Energy Vehicles Major Project of the 11th Five-Year Plan 863 Program
Circular Economy Project of Haidian District in 2009
Science and Technology Development Plan of Science and Technology Commission of Haidian District in 2010
The second batch of Beijing Special Funds for the Development of Small and Medium-sized Enterprises in 2010
The Torch Project in 2010
Special Fund for Promoting Energy Conservation and Emission Reduction of Haidian District in 2011
Scientific and Technological Achievements Transformation and Industrialization Special Project of Haidian District in 2011
This product is identified as:
Beijing's 10th batch of independent innovation products
Beijing Low-carbon Environmental Protection Product Catalog in 2011
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The Operating Principle
Hydrogen storage alloys are materials that can absorb and desorb a large amount of hydrogen reversibly under certain temperatures and pressures. Hydrogen storage alloys are used as the negative electrodes of MH/Ni batteries. The electrolyte of MH/Ni batteries is aqueous solution of potassium hydroxide. During the charging process, the hydrogen ions formed from the electrolytic water adsorb on the surface of the negative electrode, then diffuse into the electrode, react with hydrogen storage alloys and turn into metal hydrides, MHx. When the electric current is discharged reversely, the metal hydrides release the absorbed hydrogen ions and oxidize into water as both the hydrogen storage alloys and metal hydrides are good electric conductors. The electrochemical reaction equation is as below,
M + xNi(OH)2 ←→ MHx + xNiOOH
During the charge and discharge process, there is neither metal ion dissolution from the positive electrodes, nor metal ion deposition from the negative electrodes. The reactions occurred on both the positive and negative electrodes belong to solid-phase transition mechanism, in which the metal-phase transforms into MHx-phase, so both electrodes have high structural stability.
Introduction
Making use of the abundant rare-earths resource in China, with advanced equipments, technology and analysis instruments, we produce high quality hydrogen storage alloys under the registered trademark of Whole Win. We have the production scale of 1000 tons per year with mature technology and steady quality.
Our company undertook the national 11th Five-Year Plan 863 Program energy saving and new energy vehicle major project “Development of High Performance and Low Cost Hydrogen Storage Alloy for Power Battery”. This project has successfully passed the acceptance of the Ministry of Science and Technology, and has provided high quality raw materials for Ni-MH batteries for electric vehicles in China.
Specifications and Performance
Co, wt.
Type
Feature
Discharge Capacity (mAh/g)
Cycle Life (Half cell test)
Plateau Pressure (45℃,
Suggestions
At 60mA/g
At 300mA/g
None
Ultra low-cost
≥300
≥280
≥200
0.025±0.01
Recommended for the production of low capacity batteries
3%
Economic
≥300
≥280
≥220
0.045±0.01
Recommended for the production of low and middle capacity batteries
4%
Low cost and high power
≥310
≥290
≥280
0.04±0.01
Recommended for the production of low cost and high power batteries
6%
Normal
≥320
≥300
≥300
0.015±0.01
Recommended for the production of normal capacity batteries
High power
≥310
≥290
≥300
0.05±0.02
Recommended for the production of high power batteries
High power
≥310
≥290
≥320
0.055±0.01
Recommended for the production of high power and long life batteries
Low cost and long life
≥300
≥280
≥330
0.04±0.01
Recommended for the production of low cost and long life batteries
8%
Normal
≥310
≥290
≥250
0.025±0.01
Recommended for the production of normal capacity batteries
High capacity
≥340
≥320
≥280
0.05±0.02
Recommended for the production of high capacity batteries
Wide temp
≥320
≥300
≥280
0.08±0.02
For batteries used in environment with a wide temperature range
Low temp
≥320
≥300
≥280
0.06±0.02
Recommended for the production of batteries use at low temperature
10%
High temp
≥300
≥280
≥350
0.025±0.01
Recommended for the production of batteries use at high temperature
High capacity and long life
≥340
≥300
≥300
0.025±0.01
Recommended for the production of high capacity and long life batteries
Long life
≥310
≥290
≥350
0.045±0.01
Recommended for the production of long life batteries
Ultra-long life
≥300
≥280
≥380
0.06±0.02
recommended for the production of ultra-long life batteries
C3B
MPa)
Note: The particle sizes of the alloy are 125μm, 75μm, 53μm, and can be adjusted according to clients’ requirements.
