CWRU Researchers Tailor Power Source for Wearable Electronics

December 17, 2015 | Case Western Reserve University

Estimated reading time: 2 minutes

Whether wrapped with yarn or a sheet, the microsupercapacitor retained at least 80 percent of its capacitance after 1,000 charge-discharge cycles. To match various specific power needs of wearable devices, the wire-shaped capacitors can be connected in series or parallel to raise voltage or current, the researchers say.

When bent up to 180 degrees hundreds of times, the capacitors showed no loss of performance. Those wrapped in sheets showed more mechanical strength.

"They're very flexible, so they can be integrated into fabric or textile materials," Dai said. "They can be a wearable, flexible power source for wearable electronics and also for self-powered biosensors or other biomedical devices, particularly for applications inside the body."

Dai 's lab is in the process of weaving the wire-like capacitors into fabric and integrating them with a wearable device.

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