Seminars & Speakers
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Speaker | Dr. Coojin Jeong |
Affiliation | Korea Electronics Technology Institute |
Date | September 27, 2017 |
Time | 4:00 pm - 5:00 pm |
Venue | EB2(#104)-E205 |
Sponsor | UNIST-Energy and Chemical Engineering |
Host | Prof. Hyun Kon Song |
Contact | 052-217-2512 |
In order to address recent concerns on the limited resources of lithium and the localized reserves, Na rechargeable batteries have gained much attention as alternative power sources to replace Li rechargeable batteries. Although Na and Li have similar physicochemical properties, Na rechargeable batteries have not enjoyed the success that Li batteries have, due to their low energy density and poor cycle performance. Herein we introduce new Na rechargeable battery system using an SO2-based inorganic liquid electrolyte as (i) a Na+-conducting medium and/or (ii) cathodic electroactive material. The possibility of room temperature Na–SO2 battery and Na–CuCl2 ZEBRA-type battery using an SO2-based electrolyte is to be discussed. Also, the unique behavior of dendrite-free Na metal anode in this electrolyte, resulting in superior electrochemical performances to those in the conventional organic electrolyte, will be presented.