Hosted by IDTechEx
Truly Global Daily News
Interpreted by Experts
HomeEventsReportsAdvertiseTVCareersAbout UsSign-up or LoginIDTechExTwitterFacebookLinkedInGoogle+YoutubeRSSForward To Friend
Posted on February 09, 2012

Ionic-liquid-based gel electrolyte boosts flexible supercapacitors

Energy Harvesting: Off-Grid MicroW to MegaW 2017
A newly developed ionic-liquid- and silica-based gel electrolyte greatly improves both the energy and power density of flexible supercapacitors, say researchers at Korea University. The amount of energy that can be stored in the supercapacitors is significantly increased owing to the stability of the electrolytes over a wide voltage range. What's more, the power that can be delivered by the supercapacitors with the gel electrolyte is as good as that of supercapacitors with liquid electrolytes.
 
The team has formulated the gel-like electrolyte to make flexible energy-storage devices for potential applications including wearable electronics.
×Flex
Flex
is exhibiting at
Internet of Things Applications USA 2016
Santa Clara, CA, USA
16 - 17 Nov 2016
Flexible carbon nanotubes and regular office paper were used as electrode materials and supporting substrates, respectively, which allow the entire supercapacitor to bend.
 
The performance of the device is comparable to that of supercapacitors with ionic liquid electrolytes, and the gel-like material ensures that the supercapacitors are flexible and free from leakage and integrity issues, which can affect liquid-based designs. Also, the novel electrolytes are stable over 3 V, which is a voltage window three times wider than that of conventional H2SO4-based polymer gel electrolytes. This leads to an order of magnitude improvement in energy density because storable energy increases with the square of the operation voltage.
 
Thermoelectric Energy Harvesting 2016-2026
Source and image: Institute of Physics
Top image shows: light emitting diode (LED) powered by one of the team's supercapacitors