ZPower touts silver-zinc batteries as li-ion alternative

Posted on Monday, Sep 24 2007 @ 01:27 CEST by Thomas De Maesschalck
A firm called ZPower is pushing its new silver-zinc batteries as a good alternative to lithium-ion batteries. The firm says their new silver-zinc based batteries are safer and have a 30% higher energy density than li-ion batteries:
According to ZPower president and CEO Ross Dueber, the batteries can even be safely overcharged to allow for additional runtime.

ZPower batteries are composed of a composite polymer zinc anode, layered separator and a nano-particle silver cathode. Since the cells used in ZPower's batteries are water-based, they are as safe to use as traditional alkaline batteries.

The zinc and silver used in the batteries are also 95 percent recyclable. ZPower will have a program in place in which customers can recycle their used batteries and get reimbursed for the value of the silver and zinc recovered. Customers will receive a check or receive credit towards the purchase of new cells according to Dueber.

All is not well, however, with ZPower's batteries. Pre-production batteries are only good for about 100 cycles compared to around 300 cycles for lithium-ion batteries. ZPower hopes to increase this figure to 200 cycles by mid-2008 and to 300+ cycles by 2010.
However, the batteries won't work in current products due to the difference in voltage and battery chemistry of silver-zinc batteries. Notebooks and cell phones will specifically need to be designed for this new type of batteries for optimal efficiency. Pricing details aren't available. Source: DailyTech.

About the Author

Thomas De Maesschalck

Thomas has been messing with computer since early childhood and firmly believes the Internet is the best thing since sliced bread. Enjoys playing with new tech, is fascinated by science, and passionate about financial markets. When not behind a computer, he can be found with running shoes on or lifting heavy weights in the weight room.

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