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05-18-2015, 10:43 PM
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Korean researchers have developed a new type of lithium–sulfur battery using vitamin C with a 20% improvement in performance over current ones.
A group of researchers led by Professor Lee Jae-young at the Gwangju Institute of Science and Technology said on Thursday that they succeeded in improving the energy capacity of lithium–sulfur batteries with vitamin C treated dual-layered graphene–sulfur.
Lithium-sulfur batteries are widely considered as a viable replacement for current lithium-ion batteries for electric cars because of its superior energy density. Yet, lithium-sulfur batteries have not been actively used in the field yet since there are a few problems to be resolved such as poor cycle performance and low charge/discharge rates.
However, the researchers showed that their vitamin C treated dual-layered cathode, which is composed of a sulfur active layer and a polysulfide absorption layer, can increase sulfur utilization dramatically resulting in a lithium-sulfur battery with a high specific capacity of over 600 mAh gsulfur (-1) after 100 cycles even under a high current rate of 1C.
Professor Lee said, “This development is meaningful in a sense that it can greatly improve low cycle performance of lithium-sulfur batteries, which is a big obstacle to commercialization of them,” adding, “we expect the new development will practically increase the adaptation of lithium-sulfur batteries to next-generation electric car batteries.”
The results of the development were published in the online version of ChemSusChem on April 29 with the title of “Improvement of energy capacity via Vitamin C-treated dual-layered graphene-sulfur cathodes in lithium sulfur battery”.http://feeds.feedburner.com/~ff/blogspot/pEcq?d=yIl2AUoC8zA (http://feeds.feedburner.com/~ff/blogspot/pEcq?a=mhcdjMNlCwk:8ENcU3XwxGo:yIl2AUoC8zA) http://feeds.feedburner.com/~ff/blogspot/pEcq?i=mhcdjMNlCwk:8ENcU3XwxGo:V_sGLiPBpWU (http://feeds.feedburner.com/~ff/blogspot/pEcq?a=mhcdjMNlCwk:8ENcU3XwxGo:V_sGLiPBpWU) http://feeds.feedburner.com/~ff/blogspot/pEcq?d=qj6IDK7rITs (http://feeds.feedburner.com/~ff/blogspot/pEcq?a=mhcdjMNlCwk:8ENcU3XwxGo:qj6IDK7rITs) http://feeds.feedburner.com/~ff/blogspot/pEcq?i=mhcdjMNlCwk:8ENcU3XwxGo:gIN9vFwOqvQ (http://feeds.feedburner.com/~ff/blogspot/pEcq?a=mhcdjMNlCwk:8ENcU3XwxGo:gIN9vFwOqvQ)
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Korean researchers have developed a new type of lithium–sulfur battery using vitamin C with a 20% improvement in performance over current ones.
A group of researchers led by Professor Lee Jae-young at the Gwangju Institute of Science and Technology said on Thursday that they succeeded in improving the energy capacity of lithium–sulfur batteries with vitamin C treated dual-layered graphene–sulfur.
Lithium-sulfur batteries are widely considered as a viable replacement for current lithium-ion batteries for electric cars because of its superior energy density. Yet, lithium-sulfur batteries have not been actively used in the field yet since there are a few problems to be resolved such as poor cycle performance and low charge/discharge rates.
However, the researchers showed that their vitamin C treated dual-layered cathode, which is composed of a sulfur active layer and a polysulfide absorption layer, can increase sulfur utilization dramatically resulting in a lithium-sulfur battery with a high specific capacity of over 600 mAh gsulfur (-1) after 100 cycles even under a high current rate of 1C.
Professor Lee said, “This development is meaningful in a sense that it can greatly improve low cycle performance of lithium-sulfur batteries, which is a big obstacle to commercialization of them,” adding, “we expect the new development will practically increase the adaptation of lithium-sulfur batteries to next-generation electric car batteries.”
The results of the development were published in the online version of ChemSusChem on April 29 with the title of “Improvement of energy capacity via Vitamin C-treated dual-layered graphene-sulfur cathodes in lithium sulfur battery”.http://feeds.feedburner.com/~ff/blogspot/pEcq?d=yIl2AUoC8zA (http://feeds.feedburner.com/~ff/blogspot/pEcq?a=mhcdjMNlCwk:8ENcU3XwxGo:yIl2AUoC8zA) http://feeds.feedburner.com/~ff/blogspot/pEcq?i=mhcdjMNlCwk:8ENcU3XwxGo:V_sGLiPBpWU (http://feeds.feedburner.com/~ff/blogspot/pEcq?a=mhcdjMNlCwk:8ENcU3XwxGo:V_sGLiPBpWU) http://feeds.feedburner.com/~ff/blogspot/pEcq?d=qj6IDK7rITs (http://feeds.feedburner.com/~ff/blogspot/pEcq?a=mhcdjMNlCwk:8ENcU3XwxGo:qj6IDK7rITs) http://feeds.feedburner.com/~ff/blogspot/pEcq?i=mhcdjMNlCwk:8ENcU3XwxGo:gIN9vFwOqvQ (http://feeds.feedburner.com/~ff/blogspot/pEcq?a=mhcdjMNlCwk:8ENcU3XwxGo:gIN9vFwOqvQ)
http://feeds.feedburner.com/~r/blogspot/pEcq/~4/mhcdjMNlCwk
More... (http://feedproxy.google.com/~r/blogspot/pEcq/~3/mhcdjMNlCwk/researchers-develop-20-improved-lithium.html)