SINGAPORE: Scientists from the Nanyang Technological University have developed a sweat-powered battery, capable of generating enough energy to operate commercial temperature sensors.
Materials scientist Professor Lee Pooi See, who led the study, told reporters at a media briefing on Monday that the device is also sustainable as it does not contain heavy metals or toxic chemicals, thus reducing harmful electronic waste. The battery is created by printing ink that contains silver flakes and hydrophilic poly, which function as the battery electrodes, onto stretchable fabric.
This is vital for consistent functioning of the battery as the amount of sweat produced by people varies and depends on factors such as the area of the body, environmental conditions and time of day, added NTU. However, Prof Lee noted some challenges in the use of the battery, including its ability to last longer when there is not enough sweat, or when faced with the inconsistent sweating rate for different people.Associate Professor Irene Goldthorpe from the University of Waterloo’s Department of Electrical and Computer Engineering, who is not involved in the research, said the study may open a “new paradigm” in the design of wearable electronics.
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