Murata has created an energy-storage component specifically for wireless sensor nodes powered by energy harvesting. Rather than using supercapacitor technology, which the firm decided is too leaky, it went for a lithium ion electro-chemical system -like a phone battery but modified to extend cycle-life, broaden temperature range, reduce self-discharge, and raise power delivery. To get ...
Read full article: Tiny energy storage cell for IoT nodes lasts for years
from Electronics Weekly http://www.electronicsweekly.com/news/products/power-supplies/tiny-energy-storage-cell-iot-nodes-lasts-years-2016-09/
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