Murata has created an energy storage component specifically for wireless sensor nodes powered by energy harvesting.
BY Steven Bush, Electronics Weekly, Sept. 14, 2016 –
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 these improvements, Murata sacrificed energy capacity, but claims energy/volume remains 40x higher than its own supercapacitors.
The first product based on the concept, a cylindrical device called UMAC (see photo), was released in October last year. Now an improved device has been announced: prismatic in shape and called UMAL.
Click here to read more...