Monday, 12 May 2014

Now Cloths to power wearable devices



Your garments might soon be converted into devices that might power your medical monitors, communications equipment or alternative tiny electronics as researchers have currently come closer to creating a fiber-like energy device that might be woven into cloths that you wear.

The fiber super-capacitor showed ultrahigh energy-density value, whereas maintaining the high power density and cycle stability.

Using a polyvinyl alcohol /phosphoric acid gel as an solution, a solid-state micro-supercapacitor made of a pair of fibers offered a volumetrical density of 6.3 microwatt hours per cubic millimetre, that is akin to that of a 4-volt-500-microampere-hour skinny film lithium battery.

"We have tested the fiber device for 10,000 charge/discharge cycles, and the device retains concerning 93 p.c of its original performance," said Dingshan Yu of Nanyang Technological University (NTU) in Singapore.

Conventional rechargeable batteries have a lifespan of less than 1,000 cycles.

The team additionally tested the device for versatile energy storage. The device was subjected to constant mechanical stress and its performance was evaluated.

"The fiber super capacitor continues to work without performance loss, even once bending many times.

Such wearable cloths may power biomedical observation devices a patient wears reception, providing data to a doctor at a hospital, said Liming Dai of Case Western Reserve University within the U.S..

Woven into uniforms, the battery-like supercapacitors may power displays or transistors used for communication.

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