Seminars & Symposium

[4/22] The 1st WPI-AIMR Joint Seminar in FY2016

The 1st WPI-AIMR Joint Seminar in FY2016

Title

Concentrated electrolytes: New electrolyte design for rechargeable batteries

Speaker

Dr. Yuki Yamada
(Department of Chemical System Engineering, The University of Tokyo)

Date

April 22 (Fri.), 2016 14:30-15:30

Venue

Seminar Room, 2nd floor, WPI-AIMR Main Bldg

Abstract

An ever increasing demand for better batteries (with high voltage, capacity, and safety) has set extraordinarily high standards for electrolyte materials, which are far beyond the realm of conventional nonaqueous electrolyte design. Highly concentrated solutions are emerging as a new class of liquid electrolytes with various unusual functionalities beneficial for battery applications (Fig. 1). In this seminar, I will talk about our original works on unique features of highly concentrated electrolytes from the viewpoint of their peculiar ion-solvent coordination structure, and discuss their future contributions to advanced battery technologies. Reference: 1) Y. Yamada et al., J. Electrochem. Soc. [invited review], 162, A2406 (2015). 2) Y. Yamada et al., ChemElectroChem, 2, 1687 (2015). 3) Y. Yamada et al., J. Am. Chem. Soc., 136, 5039 (2014). 4) Y. Yamada et al., Chem. Commun., 49, 11194 (2013).

Figure 1 Typical ionic conductivity curve of Li salt-aprotic solvent mixture. Highly concentrated electrolytes, having been outside the research mainstream due to decreased ionic conductivity, are recently receiving intensive attention because of various unusual functionalities.

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