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New Supercapacitor Promises To Make Electric Cars Faster
Graphene, a form of carbon, has several amazing properties ranging from super strength to light weight to high conductivity among other things. Now, researchers at the University of California, Riverside have found yet another application for this super material.
The scientists have designed a supercapacitor that can hold two times more energy and power than any other before. This promises a varity of real world applications, one of which includes electric cars with faster acceleration and longer battery life.
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The new type of supercapacitors is based on transition metal oxide modified nanocarbon graphene foam electrode and it could work safely in aqueous electrolyte, to deliver twice the energy and power compared to those commercially available at present.
In addition, these foam electrodes can be cycled over 8,000 times, without any loss in performance.
A team led by Cengiz S Ozkan and Mihri Ozkan at UC Riverside are working to make nanostructured materials used in the high energy density supercapacitors commercially viable.
"To achieve a higher power density it is critical to have a large electrochemically accessible surface area, high electrical conductivity, short ion diffusion pathways and excellent interfacial integrity. Nanostructured active materials provide a mean to these ends," researchers said.
"Besides high energy and power density, the designed graphene foam electrode system also demonstrates a facile and scalable binder-free technique for preparing high energy supercapacitor electrodes," said graduate student Wei Wang, author of the research paper.
"These promising properties mean that this design could be ideal for future energy storage applications," said Wang.
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