Synergistic Effect of the Anode Interface of Garnet-Type All-Solid-State Batteries

Next-generation lithium-ion batteries must have high energy density and safety, making the development of allsolid-state batteries imperative. One of the biggest advantages of an all-solid-state lithium-ion battery (ASSLIB) is that its alloy uses lithium metal as an anode while ignoring its flammability and other d a n g e r s. H e r e i n, h i g h - c o n d u c t i v i t y g a r n e t - t y p e Li6.75La3Zr1.75Ta0.25O12 (LLZTO) was chosen as the solid electrolyte part of an all-solid-state battery. A composite anode was formed by melting Li and MXene-MAX together, reducing the interface impedance from 566 to 55 Omega cm(2). The Li-MXene| LLZTO|LFP full battery displayed a high initial discharge capacity of 163.0 mAh g(-1) and a Coulombic efficiency of 97.0% and maintained 90.2% of its discharge capacity over 100 cycles, but it did not maintain a good overpotential. Therefore, the synergistic effect of Li-MXene-Pt will highly improve the performance of the full battery because of its high initial discharge capacity of 150.0 mAh g(-1) and Coulombic efficiency of 95.5%, discharge capacity maintained at 93.3% over 100 cycles, and low overpotential of 0.04 V.