Synthesis of Nanocrystalline Lanthanum Zirconate and Tape Casting of Films for Conversion to Lithium Lanthanum Zirconate
Li-ion batteries allow us to store electrochemical energy efficiently and safely. Indeed, these batteries have revolutionized fields ranging from portable and wearable electronics to grid-scale energy supply. Typically, Li-ion batteries operate by polarizing and transferring lithium ions through organic solvents or gels. Unfortunately, these systems suffer from low conductivity and are potentially dangerous due to the flammable nature of the organic solvent. Thin-films of lithium lanthanum zirconate (LLZO), a solid electrolyte, are a promising alternative, however, current manufacturing processes are only capable of producing large amorphous structures of LLZO. Therefore, an effective and efficient means of producing thin-films of LLZO is needed.
Researchers at ASU have developed a means of producing thin-films of LLZO using an efficient and affordable method. Excitingly, the method produces ultrafine nanocrystals which can be dissolved in solvent to form a slurry and then easily tape-casted into thin ceramic films. Because the material operates as a solid-state system there are fewer possible side reactions while also being non-flammable. Essentially, this electrolyte material will address many of the weaknesses of conventional Li-ion ceramic electrolytes while maintaining the same caliber of performance.
• Li-ion Batteries
• Conductive Membranes
Benefits and Advantages
• Nanosized- Opposed to traditional methods of synthesizing LLZO, the method developed by researchers produces nanosized particles which can be dissolved into slurries.
• Simplicity- The synthetic method is straightforward and cost effective.