I-3 – All Solid-State Batteries



Organizers: Jürgen Janek (Justus-Liebig University), Jennifer Rupp (Massachusetts Institute of Technology), Yasutoshi Iriyama (Nagoya University).

Solid-state batteries operate on solid electrolytes based on oxides, sulfides or phosphates and give new perspective to high specific energy and power density. The promise is to use the ability of ceramic solid-state electrolytes to eliminate potentially flammable liquids and corrosive environments. Nevertheless, challenges such as the slow kinetics at the electrode-electrolyte interface, finding suitable electrodes tolerating the high chemo-mechanical stresses upon charging and discharging or simply a detailed understanding of the defect chemistry of bulk vs. interfaces require attention. From an application point of view, novel stationary solid-state batteries, operating at elevated temperatures, to further enhance Li+ and Na+ transport and charge/discharge kinetics, could profit by utilizing industrial waste heat. At the other extreme, solid-state microbatteries could better compete with today’s supercapacitors in electronics. To achieve an improved understanding of transfer kinetics, the study of solid-solid electrode-electrolyte interfaces requires fundamental attention, while novel “in-operando” characterization approaches promise improved insights into electro-chemo-mechanical phenomena associated with lithiation/delithiation and their impact on phase and mechanical stability associated with volumetric changes. The solid state creates opportunities for identifying novel high storage capacity electrode materials, which are normally not stable in liquid or corrosive media such as those found in standard batteries. Likewise, attention needs to be directed towards the discovery and development of improved solid electrolytes, both with respect to ion conductivity and stability over wide chemical activity limits. Turning from the macro to the nano, the study of grain vs. grain boundary contributions, as well as interfacial reactions driven by, e.g., interactions with humidity and CO2 and their impact on electrochemical performance is critical for the understanding and optimization of solid state batteries. Thin film processing of solid electrolytes and electrodes, and improving the understanding of the fundamentals of surface segregations as well as its impact on surface chemistry are critical in the development of novel microbatteries. Finally, new materials allowing for battery storage beyond the classic Li+ carriers, such as Na+ and Mg2+, will be examined, as will their potential impact on battery device science and engineering. Ultimately the symposium deems to foster a deep and open discussion from fundamental defect chemistry in solid-state battery constituents and their interfaces, up to novel material development and alternative solid-state battery architecture.


Abstracts are solicited in, but not necessarily limited to, the following areas:

In this Symposium are also welcome those contributions which cover the topics beyond the above-described areas. This is done to provide the audience with a comprehensive description of Solid State Ionics. If your contribution is difficult to host within the above areas, please do not hesitate to contact directly the Conference Chairmen at ssi21@dii.unipd.it for advice.

List of Invited Speakers