High-Purity Cubic-Phase LLZO Powder Launched, Empowering Technological Upgrade of Solid-State Electrolytes for Lithium Batteries

Recently, a high-purity lithium lanthanum zirconium oxide LLZO powder electrolyte material specially developed for lithium batteries has been officially launched. Boasting an ultra-high purity of 99.9%, a stable cubic-phase structure and excellent ionic conductivity, this material provides core material support for the R&D and industrialization of all-solid-state lithium batteries. It marks a major breakthrough in the upgrade of electrolyte materials in the new energy battery sector and drives lithium batteries towards higher safety and energy density.

As a core key material for all-solid-state lithium batteries, the performance of solid-state electrolytes directly determines the overall performance of batteries. The newly launched LLZO powder has a chemical composition of Li7La3Zr2O12, a core category of garnet-type oxide solid-state electrolytes. Relying on its intrinsic chemical stability and electrochemical properties, it perfectly meets the application requirements of solid-state electrolytes for lithium batteries and solves the industry pain points of traditional liquid electrolyte lithium batteries such as leakage, thermal runaway and short cycle life from the material end.

In terms of core performance indicators, this LLZO powder demonstrates numerous advantages. Its particle size is precisely controlled at 5-8μm, and the uniform particle size distribution can construct a highly connected ionic conduction network, optimize the interface contact with electrodes, effectively avoid problems such as slurry component separation and uneven diaphragm thickness during battery preparation, and ensure the consistency and stability of battery performance. The ultra-high purity of 99.9% reduces the interference of impurities on ionic conduction from the source, provides a stable electrochemical environment for batteries, and also lays a foundation for improving the yield rate in subsequent battery preparation.

Crucially, the material features a stable cubic-phase structure, which is the core guarantee for LLZO materials to achieve high ionic conductivity. Compared with the tetragonal-phase structure, cubic-phase LLZO has a more disordered lithium atom substructure, which can provide a smoother channel for lithium ion migration. Its room-temperature ionic conductivity reaches 5×10-4 S/cm, a level matching the mainstream industrial applications, which can meet the core demand of all-solid-state lithium batteries for ionic conduction efficiency, effectively reduce battery internal resistance, and improve the charge-discharge efficiency and rate performance of batteries. Meanwhile, the sintering point of the material is about 1000℃, which is compatible with the medium and high-temperature sintering processes in existing lithium battery production. It does not require large-scale transformation of production lines, featuring good industrial adaptability and reducing the application costs for downstream enterprises.

In terms of safety and application potential, as an oxide solid-state electrolyte material, LLZO powder has the intrinsic non-combustible property. Replacing traditional liquid electrolytes with it can fundamentally eliminate the risks of thermal runaway, fire and explosion of lithium batteries, greatly improve the safety performance of batteries, and enable them to adapt to the safe application requirements of new energy vehicles, energy storage power stations, portable electronic devices and other scenarios. In addition, the material has excellent chemical stability and good compatibility with lithium metal anodes, which can effectively inhibit the growth of lithium dendrites and solve the short-circuit problem caused by dendrites piercing the diaphragm during the cycle of lithium metal anodes. It provides material support for lithium batteries to adopt high-energy-density lithium metal anodes and helps achieve a leap-forward improvement in the energy density of lithium batteries.

At present, this LLZO powder is mainly used in the preparation of solid-state electrolytes for lithium batteries. It can serve as a core raw material to prepare dense solid-state electrolyte ceramic sheets and also be used for the preparation of electrolyte slurries, meeting the different R&D and production needs of semi-solid and all-solid-state lithium batteries. In terms of packaging, the product is available in a specification of 100g per bottle, which accurately meets the small-batch R&D and testing needs of scientific research institutions and battery enterprises, facilitating formula debugging, performance verification and other work in the laboratory stage and laying a foundation for subsequent large-scale applications.

In recent years, the global new energy industry has developed rapidly. As the core component of new energy vehicles and energy storage systems, the technological upgrade and performance improvement of lithium batteries have become the core demand of industrial development. All-solid-state lithium batteries are regarded as the mainstream development direction of the next-generation lithium batteries due to their advantages of high safety, high energy density and long cycle life, and the breakthrough of solid-state electrolyte materials is the key to the industrialization of all-solid-state lithium batteries. Garnet-type LLZO materials have become a key R&D direction in the field of solid-state electrolytes and one of the oxide solid-state electrolyte materials with the greatest industrialization potential at present, thanks to their combined advantages of high ionic conductivity, good chemical stability and compatibility with lithium metal anodes.

The launch of this high-specification LLZO powder fills the market demand for the R&D and application of high-end solid-state electrolyte materials, provides a high-performance material option for domestic lithium battery enterprises and scientific research institutions, and helps accelerate the R&D process of domestic all-solid-state lithium batteries. At the same time, the stability and adaptability of the material in performance indicators also lay a technical foundation for subsequent large-scale mass production, driving oxide solid-state electrolyte materials towards industrialization and marketization.

Industry experts pointed out that the industrialization of all-solid-state lithium batteries is a systematic project, and the collaborative innovation of materials, processes and equipment is crucial. Technological breakthroughs in solid-state electrolyte materials such as LLZO powder will further activate the innovation vitality of the all-solid-state lithium battery industry chain. With the continuous optimization of large-scale production technologies and the gradual reduction of costs in the future, all-solid-state lithium batteries will accelerate their transition from the laboratory to the market, providing core impetus for the upgrading of the new energy vehicle industry and the development of the energy storage industry. In the future, with the continuous optimization of material performance and the expansion of application scenarios, LLZO-based solid-state electrolyte materials are expected to become one of the core materials in the field of all-solid-state lithium batteries, driving the new energy industry towards a safer, more efficient and more sustainable direction.