Lithium-ion Rich Anti-Perovskite (LiRAP)™
Today’s growing need for energy storage as related to renewables, electric & hybrid vehicles, consumer products, and government applications drives the requirement for a radical change in energy storage materials, design and production. In all solid-state lithium batteries the electrolyte is a solid-state ionic conductor (SSID). The absence of a liquid electrolyte (hence the lack of need for a liquid container and separator) implies a larger freedom of design as well as certain advantages in terms of safety. The conductivity of the solid state electrolyte (SSE) is typically several orders of magnitude lower than that of a traditional liquid electrolyte in a lithium battery. To mitigate this drawback an all solid-state lithium battery is often fabricated by thin-film methods, with thickness in the range of a few micrometers. These thin film batteries typically do not make use of porous electrodes: all electrochemical reactions instead take place on the interface between the electrolyte and the solid electrode domains.
Several inorganic compounds with high ionic conductivity for solid state lithium ion batteries have been proposed in recent literature; however these compounds have yet to demonstrate a compatibility when characterized with known cathode materials. This provides a unique opportunity for PATHION’s AdSIC to gain the attention and interest of many scientist focused on finding the answer to the puzzle of high performance SSE’s. PATHION has over 20 partners, 60 scientists and seven papers published in support of the AdSIC SSE material. The key criteria of high lithium mobility within any solid lithium ion conductor are the concentration of the charge carriers and vacancies, the “bottleneck size” which is the cross sectional area that lithium ion has to pass through, connectivity of the sites where lithium ions are mobile and the polarizability of the anions.
This patented new electrolyte material (Lithium ion Rich Anti-Perovskite or LiRAP™) lends itself specifically to high performance storage architectures designed around new age, well matched, rate limited anodes and cathodes coated by an ultra-thin layer of PATHION electrolyte.
PATHION Diversity in Technology
Today’s leading electrolyte LiPF6 has been serving the market with small gains in performance over the past 15 years. While this electrolyte has been compatible with industry leading cathode and anode materials, this chemistry suffers from safety and other issues resulting in explosions and fires. PATHION’s LiRAP is a new electrolyte which is non-flammable and is compatible with existing anode and cathode materials making it a revolutionary high-performance solution for energy storage applications serving government, consumer and EV markets. As a solid state electrolyte, LiRAP can operate in a wider range of temperatures than conventional electrolytes. In addition, because of the optimized electron and ion transports within LiRAP, very little heat is generated. This advanced super-ionic conductive material (AdSIC) has three times the lithium per molecule which yields ultra-high conductivity and therefore provides for an extremely high performing material with a broad range of applications. LiRAP utilizes no rare earth materials and has a low-cost manufacturing process.