A nickel-metal hydride rechargeable battery formerly used in laptop computers is based
Chapter 13, Problem 13-18(choose chapter or problem)
A nickel-metal hydride rechargeable battery formerly used in laptop computers is based on the following chemistry:
Cathode:
\(\mathrm{NiOOH}(s)+\mathrm{H}_{2} \mathrm{O}+\mathrm{e}^{-} \stackrel{\text { discharge }}{\underset{\text { charge }}{\rightleftharpoons}} \mathrm{Ni}(\mathrm{OH})_{2}(s)+\mathrm{OH}^{-}\)
Anode:
\(\mathrm{MH}(s)+\mathrm{OH}^{-} \stackrel{\text { discharge }}{\underset{\text { charge }}{\rightleftharpoons}} \mathrm{M}(s)+\mathrm{H}_{2} \mathrm{O}+\mathrm{e}^{-}\)
The anode material, MH, is a transition metal hydride or rare earth alloy hydride. Explain why the voltage remains nearly constant during the entire discharge cycle.
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