James S
Flashlight Enthusiast
Interesting little sidebar in New Scientist this week. It's specifically about LiIon implant batteries, but the same will hold true for the rest of them. I can't find it online, but here is the gist...
"Lithium batteries can refuse to recharge if their voltage falls below 2.5 volts, because a salty electrolyte within them begins to eat away copper in the electrodes.
Now California company Quallion has discovered a simple trick for avoiding battery failure. The company added nickel to the copper and lithium in the batteries positive electrode and made the negative electrode from titanium and graphite instead of copper. This keeps corrosion at bay even when the battery goes completely flat, allowing it to be recharged..."
Interesting huh?
Now, if they can just keep them from exploding perhaps we can get cheaper cells for other applications too!
"Lithium batteries can refuse to recharge if their voltage falls below 2.5 volts, because a salty electrolyte within them begins to eat away copper in the electrodes.
Now California company Quallion has discovered a simple trick for avoiding battery failure. The company added nickel to the copper and lithium in the batteries positive electrode and made the negative electrode from titanium and graphite instead of copper. This keeps corrosion at bay even when the battery goes completely flat, allowing it to be recharged..."
Interesting huh?
Now, if they can just keep them from exploding perhaps we can get cheaper cells for other applications too!
