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Friday, September 1, 2017

Solid electrolyte rechargeable alkaline batteries on the horizon

Newer, rechargeable alkaline batteries might be able to compete with lithium batteries by using a solid electrolyte polymer developed by Dr. Mike Zimmerman, who was no Nova Science Now (see this article). This solid polymer can be used in lithium batteries to prevent sudden explosive discharges, or in alkaline batteries that currently use a paste electrolyte.
Zimmerman's company, Ionic Materials, says its polymer tech can make a rechargeable alkaline battery that can be charged and discharged at least 400 times.
But the number of recharges depends on how much C you charge the battery at. "Fast chargers" charge at a higher C which reduces the number of times a battery can be recharged to as low as 20-30 times.

But what is C? C is the capacity of the battery. If the battery has a capacity of 1000 milliamps, then charging at 0.5C means charging it at 500mA, which is a bit too high. For longer life, charge it at 0.25C, or in this case, 250mA.
Because ingredients in alkaline batteries are abundant and cheap, a rechargeable version of an alkaline battery could be cheaper than a lithium-ion battery. 
The Japenese are also working on a solid electrolyte.

Green Tech Media.

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