Cross-Linked Composite Polymer Electrolyte Doped with Li6.4La3Zr1.4Ta0.6O12

Abstract

Interfacial studies were performed on Li-ion conducting solid electrolytes based on cross-linked composite polymer electrolytes (CPEs) with different volume fractions of lithium lanthanum zirconium oxide (LLZTO). Dendrite-free protrusion could be achieved with excellent interfacial stability at current density of 400 mA/cm2 (figure 1)and higher with excellent ionic conductivity of 1.1 × 10−4 S cm−1 at 40 °C. An all-solid-state full cell was fabricated with LiNi0.6Mn0.2Co0.2O2 (NMC) as the cathode and 20 µm of lithium on 15 µm copper anode as well as Li chip (270 µm) for comparison. The cells delivered a capacity of ca. 130 mAh g−1, which proved the effectiveness of the electrolyte. The effect of the different volume fractions on the interfacial properties and the architecture of embedded the solid electrolyte in the cathode will be discussed. Figure 1