Jointly developed by Changchun Institute of Applied Chemistry under the Chinese Academy of Sciences, and others, China?痵 two proprietary nickel-hydrogen cells that can stand an extreme low temperature of ?-40?? applaud a success. The two products can realize a respective discharge of 0.2C5A and 0.4C5A at a temperature environment of ?-40??, with their discharging volumes reaching 70% or above, fully met application needs.

The Institute started the development of low temperature nickel-hydrogen cells from September 2000. Thanks to more than 4-year painstaking efforts, researchers have achieved major progresses in selecting the right alloys (non-AB5) that facilitate the diffusion of hydrogen, and an alloy combination that is able to raise the pressure of hydrogen releasing platform. The proprietary non-AB5 alloy materials developed by researchers create an important ground for preparing low temperature nickel-hydrogen cells. The cathode alloy used in the new batteries can realize a maximum discharge of 300mAh/g at an indoor temperature, and reach a discharge volume of 214mAh/g  under ?-40?? at 65mA/g, or 15 times the capacity of ordinary cathode materials.

The Institute, in collaboration with other research institutes, landed further breakthroughs in key technologies and techniques for manufacturing low temperature cells, and rolled out high quality low temperature cells of AA and D specifications. Researchers also achieved success in an expanded experiment using 20 kg of alloy cathode materials, which led to the manufacturing techniques and key technologies needed for an annual capacity of 500,000 tons of cathode alloys.