Wide and Thin Li Metal Powder Electrodes and Their Electrochemical Performances

Abstract

Li metal powders are very useful in fabricating wide and thin Li metal electrodes due to its ease applicability to slurry-coating process. Furthermore, not only microstructure but also functional components can be controlled or added in Li metal power electrode. These beneficial characteristics can lead to more stable and robust Li metal electrode comparing to the conventional extrusion/roll-pressed, electroplated, or vacuum evaporated Li metal electrodes. In this work, we introduce how thin and wide the Li metal electrode can be fabricated using the conventional slurry-coating method. And then, it is also included how binder-induced scaffold-like electrode structure can improve the electrochemical performances of Li metal electrode. Furthermore, the role of some inorganic additives like CNTs, LiNO3 or AgNO3 will be also discussed with significant electrochemical performance enhancements. Finally, these Li metal powders are being investigated to lithiate diffusion-dependent electrodes especially for all-solid-state batteries. [References] 1. D. Kang†, D. Jin†, H. Lee*, S.-Y. Ryou*, Y. M. Lee* et al., Chemical Engineering Journal, 452 (2023) 1394092. C. B. Dzakpasu, H. Lee*, S.-Y. Ryou*, Y. M. Lee* et al., Electrochimica Acta, 430 (2022) 1410933. J. Kim†, S. Jung†, Y. M. Lee* et al., Advanced Energy Materials, 12 (2022) 21031084. D. Jin, M.-H. Ryou*, H. Lee*, Y. M. Lee* et al., Advanced Energy Materials, 11(18) (2021) 20037695. D. Jin, M.-H. Ryou*, Y. M. Lee* et al., Chemical Engineering Journal, 406 (2021) 1268346. D. Jin, Y. M. Lee*, M.-H. Ryou* et al., Electrochimica Acta, 364 (2020) 136878