Eric McCalla

¹ Chemistry department, McGill University

EXTENDED ABSTRACT: Advanced battery materials fbr next-generation technologies involve complex chemistries (at least pseudo-quaternary). These materials all lie in systems where only a handful of compositions have been explored. Furthermore, in cases where further substitutions may prove useful, only a few substituents are typically considered. To fully understand the impact of composition and structure upon the battery properties, thousands of samples are required. Herein, a suite of high-throughput (HTP) methods (a total workflow of 892 samples/week) developed and utilized in the McCalla lab is presented. HTP experiments (as illustrated in Fig. 1) include X-ray diffraction, electrochemistry (to yield important metrics such as energy density, cycling stability, and electrochemical stability window), electrochemical impedance spectroscopy (to determine ionic conductivity and stability against metallic anodes), and DC conductivity measurements. These methods, all in high- throughput, permit the systematic design of cathodes, anodes and solid electrolytes fbr both Li- and Na-ion batteries. This presentation will then focus on progress made in developing various components of advanced batteries using our HTP experiments. These include high-voltage cathodes for Li-ion batteries 1, layered oxide cathodes fbr Na-ion batteries2, and ceramic oxides as solid electrolytes3-4. In each case, HTP screening of substituents (up to 52 tested simultaneously) yields materials with significantly improved properties and advances our fundamental understanding of the complex roles of substitutions in these systems.

REFERENCES

[1] A. Jonderian et al. Adv. Energy Mater. DOI: 10.1002/aenm.202201704 (2022).

⑵ S. Jia, J. Counsell, M. Adamic, A. Jonderian and E. McCalla. J. Mater. Chem. A 10, 251 (2022).

[3]   N.S.M. Johari et al. J. Power Sources 541, 231706 (2022).

[4]   A. Jonderian, M. Ting and E. McCalla. Chem. Mater. 33,4792 (2021).