Diffusion-Dependent Electrodes for All-Solid-State Lithium-Ion Batteries
Abstract
Electrode design, which is closely related to electronic and ionic transport, has a significant impact on all-solid-state batteries' performance. Typically, a combination of the active material and solid electrolyte serves as the electrode for all-solid-state batteries. An effective scaling technique to spatially organize the two components is essential for high-performance all-solid-state batteries. Here, an electrode design for all-solid-state batteries is given with a higher energy density than the typical composite-type electrode. The first section of the thesis presents a simple electrode design that primarily consists of blended active materials of graphite and phosphorus to meet the demands of all-solid-state batteries for high power and high energy density. The second section uses hard carbon electrodes to discover new anode materials for the diffusion-dependent electrode structure for all-solid-state batteries. It is demonstrated that by increasing the amount of active material in the electrode, this electrode configuration significantly increases the normalized energy density.