Electronic Design

Rechargeable Silver-Zinc Batteries Coming Online

ZPower has announced plans to introduce what it says will be the first rechargeable, silver-zinc battery for consumer electronics later this year. The company demonstrated the battery technology, which will first be available for laptop computers and cell phones, at the 2009 International CES in Las Vegas.

Using a high-performance battery chemistry, the ZPower batteries deliver up to 40% more run time than traditional lithium-ion batteries and offer significant environmental and safety advantages. For instance, more than 95% of the battery’s primary elements can be recycled and reused, and financial incentives will be available to consumers who recycle. Also, the ZPower batteries contain no lithium and are inherently safe.

The zinc anode in the batteries is a composite polymer electrode that inhibits shape change and dendrite growth, two factors that were frequently an issue in traditional silver-zinc cells. ZPower also created a highly effective separator stack that resists dendrite growth from the zinc anode, while simultaneously resisting degradation from the silver cathode. At the same time, it allows ions to move freely from the cathode to the anode to minimize the cell’s internal resistance. This results in a long life and quick charge time. The battery’s silver cathode is coated with nano particles that enhance conductivity for lower internal resistance.

ZPower

www.zpowerbattery.com

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