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Thin-Film Battery Features

Some of the unique features of the batteries:

• Long cycle life: thousands of charge-discharge cycles (see data sheets)
• Long shelf life: no measurable change after years of storage (see data sheets)
• Recharge: high current rapid recharge, no memory effects (see data sheets)
• Wide operating temperature range: cycle testing at ORNL has been carried out between -25°C and 100°C. The battery performance at higher temperatures depends on the choice of cathode material. Lithium-ion and lithium-free cells can be heated to 250°C prior to the initial charge with no change in performance.

Because the batteries are rechargeable, they need be no larger than necessary to supply the power and energy required on a single duty cycle, i.e. the conditions of current and operating time required by a device before recharge can occur. This means that for applications in which recharging is an option, the batteries can be much smaller than primary (non rechargeable) cells designed for the same application. Several applications are described here.

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Date revised - 10/29/01 (njd)
 http://www.ssd.ornl.gov/BatteryWeb/Features.html