What is Ni-MH battery?
- Apr 03, 2018 -

What is Ni-MH battery?

Ni-MH battery is a kind of battery with good performance. Ni-MH batteries are divided into high-pressure Ni-MH batteries and low pressure Ni-mh batteries. The anode active substance of Ni-mh battery is Ni (OH) 2 (called NiO electrode), the negative active substance is metal hydride, also known as hydrogen storage alloy (electrode hydrogen storage electrode), electrolyte is 6mol/l potassium hydroxide solution. As an important direction of hydrogen energy application, Ni-MH battery has been paid more and more attention.


Because of the scarcity of fossil fuels in the large-scale exploitation and utilization of human beings, the development and utilization of hydrogen energy has been paid more and more attention in recent years. As an important direction of hydrogen energy application, Ni-MH battery has been paid more and more attention. 


Although Ni-MH battery is indeed a good performance of the battery, but the aerospace Ni-MH battery is a high-pressure Ni-mh battery (hydrogen pressure up to 3.92MPa, that is, 40kg/cm2), such high pressure hydrogen storage in thin-walled containers in the use of easy to explode, and Ni-MH batteries also need precious metals as catalysts, so that its cost becomes very expensive, This is difficult for civilian acceptance, therefore, foreign since the 70 's began to explore the civilian low-pressure Ni-MH battery. Ni-MH batteries are divided into high-pressure Ni-MH batteries and low pressure Ni-mh batteries. The high-pressure Ni-MH battery was first developed by the United States of M.klein and J.f.stockel in the early 1970s. The trend of using Ni-MH batteries instead of cadmium-nickel batteries for various satellites has been developed.