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The responses to biasing a nickel–metal hydride secondary battery with a dc pulse train, as well as to spontaneous discharging, are studied. A comparison is made between the current during biasing, ie, and the current during off-biasing, ig. It is suggested that both currents arise from the motion of the same charge carriers in the electrolyte, possibly the OH− ions. The only difference is that...
A nickel–metal hydride secondary battery is discharged intermittently through a switch of 30 s on/30 s off mode via an external load Rr. The discharge current ig is measured during switch-on and an open-circuit voltage Voc during switch-off. In the course of discharge run, ig drops at some time by depletion of an active material within the positive electrode. The pulse shapes of ig and Voc in...
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