β Scribed by L. Binder; W. Odar
No coin nor oath required. For personal study only.
Rechargeable alkaline zmc-air cells and zinc-manganese dioxide cells need zmc electrodes workmg for at least 100 cycles under anode hmltmg condltlons The discharge of the manganese dloxlde cathode especially must be limited to a definite fraction (l/3) of its avallable capacity to obtam a good cycle life
This study proposes a new test cell for mvestlgatlons on pasted alkaline zmc powder electrodes When, followmg expenmentatlon, the value of the construction was established, a series of different electrode mixtures was cycled It was found that 100 full discharges could be obtamed with a zmc utlhzatlon of about 30% m the final cycles Zusammenfassung
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Zinc secondary systems have high energy density, power density, rugged physical structure, and good low-temperature performance. Zinc secondary systems are mainly used in electric vehicles, as well as in military and commercial aircraft. The main problems of zinc-based secondary systems are shape ch
Auxiliary electrodes having a low hydrogen overpotential were prepared by electrodepositing active nickel onto chemically-metallized polypropylene fibre. They effectively overcame the problem of zinc anode shape change in alkaline electrolyte by dissolving residual zinc, which remained on the anode
The anodic dissolution and passivation of vertical porous zinc electrodes that were prepared by pressing zinc powder or amalgamated zinc powder into small disks were studied in 6 M KOH + O-25 M ZnO by measuring potentiostatic current/potential curves at a rate of 1 mV/s and by taking photomicrograph