Title : Tailoring ionic transport in rare earth doped composite electrolytes for high performance metal batteries
Abstract:
Smart Lithium-Metal Batteries (LMBs) are promising energy storage devices due to the high capacity and minimum negative electrochemical potential. Nevertheless, their concrete applications remain disturbed by unbalanced electrolyte-electrode interfaces, limited electrochemical window, and high-risk. Herein, a novel strategy to obtain dual ceramic-based electrolytes that possess great potential in energy storage due to their higher level of energy densities in LMBs. Lanthanum Titanate (LTO) and Aluminum Titanium Phosphate (LTP) based electrolyte film developed via the curable system, aimed to prepare flexible Li+ interpenetrating network film to integrate the two ceramic structures with polyethylene oxide to yield the free-standing electrolytes film for better battery safety and desired interfacial stability. The films presented a satisfactory electrochemical performance, including, good ionic conductivity, large transference number, and wide Electrochemical Stability Window (ESW) at room temperature. Most importantly, the fundamental function of rare earth elements is to Support Building a Stable (SEI) and limits the growth of dendrites. Thus, prepared dual ceramic-based electrolytes effectively renders to inhibit lithium dendrite growth in a symmetrical cell during charge/discharge at a current density of 2 mA/cm2 and 0.25 mA/cm2 above standards without short-circuiting occurrence at RT. Besides, the battery assembled that exhibits superior cyclic stability with high columbic efficiency. This study recommends that the binary network structures of Li-ion conductor help to design a prime solution of promising electrolyte for high-performance applications.
