Speaker
Description
The Cold Sintering Process (CSP)(1) is used to densify composite cathodes consisting of $Li_1._3Al_0._3Ti_1._7(PO_4)_3$ (LATP) as the solid-state electrolyte and $LiFePO_4$ (LFP) as the active cathode material. First, the parameters governing the CSP (pressure, temperature, nature and quantity of liquid phase) were optimized to densify each material independently. The (thermo-)chemical stability was determined by X-ray diffraction, and electrochemical impedance spectroscopy measurements provided information on the charge transport properties of bulk ceramics. In a second step, the predefined parameters were adjusted to densify, composite cathode. These tests yielded mechanical interfaces of quality high enough to obtain self-standing catholytes with tunable residual porosity at temperature low enough to prevent (thermo-)chemical reactivity.
The presentation focuses on the relationship between the sintering parameters, the microstructure and the transport properties, particularly at the various interfaces formed (grain boundaries & interfaces between the two materials) to better control the batteries performances and ageing.
(1) Joo-Hwan Seo et al. 2021 Jpn.J.Appl.Phys. 60 037001
| Professional Status of the Speaker | Doctoral or Master Student |
|---|---|
| Invitation letter for visa | No |
| Interest in submitting a paper in a special issue of | Journal of the European Ceramic Society (Elsevier) |
