Schwungrad-Energiespeicher-Nickel-Metallhydrid-Batterie
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Kapitel 12 Nickel-Metallhydrid-Akkumulatoren Cadmiumfreie Batterie hoher Energiedichte Nickel-Metallhydrid-oderNi-MH-AkkumulatorenhabeninnerhalbkurzerZeit
What is a nickel metal hydride battery?
A nickel–metal hydride battery (NiMH or Ni–MH) is a type of rechargeable battery. The chemical reaction at the positive electrode is similar to that of the nickel–cadmium cell (NiCd), with both using nickel oxide hydroxide (NiOOH). However, the negative electrodes use a hydrogen-absorbing alloy instead of cadmium.
Are nickel metal hydride batteries a good choice for new-energy vehicles?
Nickel metal hydride (Ni-MH) batteries have demonstrated key technology advantages for applications in new-energy vehicles, while the main challenge derives from the insufficient cycle lives (about 500 cycles) of their negative electrode materials—hydrogen storage alloys. As a result, progress in their devel
What is the difference between NIMH and NiCd batteries?
However, the negative electrodes use a hydrogen-absorbing alloy instead of cadmium. NiMH batteries can have two to three times the capacity of NiCd batteries of the same size, with significantly higher energy density, although only about half that of lithium-ion batteries.
Who invented NiMH batteries?
Work on NiMH batteries began at the Battelle -Geneva Research Center following the technology's invention in 1967. It was based on sintered Ti 2 Ni+TiNi+x alloys and NiOOH electrodes. Development was sponsored over nearly two decades by Daimler-Benz and by Volkswagen AG within Deutsche Automobilgesellschaft, now a subsidiary of Daimler AG.
How fast do NiMH batteries self-discharge?
Sea-Bird Electronics, Inc. Archived from the original (PDF) on 2009-02-27. Retrieved 2009-07-10. NiMH batteries self-discharge up to 20% in the first 24 hours after charging, then as much as 15% per month. Self-discharge is highly temperature dependent. NiMH batteries self discharge about three times faster at 40 °C than at 20 °C.