Breakthrough in Solid-State Battery Technology: New Patent Application Shows Promise for Improved Energy Storage

Strategic Insights -

Developers have long searched for a more sustainable and efficient alternative to traditional lithium-ion batteries, and a new patent application may have identified a solution. Piyachai Khomein and Gao Liu, inventors from the US, have filed a patent application for a new class of sulfide-polymer composite synthesis via low-temperature solution-precipitation processes. This breakthrough technology holds significant potential for the development of next-generation all-solid-state batteries with improved energy storage capabilities.

Key Takeaways:

  • The patent application describes a new method for preparing a composite solid electrolyte using a lithium phosphorus sulfur halide (LiPSX) solution and a polymer solution, with the LiPSX precipitating out of the solution and embedding itself in the polymer matrix.
  • The composite solid electrolyte has improved stability against dendrite formation, electrochemical performance, and mechanical properties, making it a promising approach for all-solid-state Li-metal batteries.
  • The inventors claim that their method can improve the conductivity of the solid electrolyte up to about 0.3 mS/cm, about 12 wt % of polymer.
  • The application also describes various embodiments of the subject matter, including different combinations of LiPSX and polymers, as well as different processing methods for the composite solid electrolyte.
  • The inventors claim that their method can be used to prepare a wide range of polymer-embedded LiPSX materials, including particles of a lithium phosphorus sulfur halide (LiPSX) disposed in a polymer matrix.

Statistics:

  • The patent application describes a method for preparing a composite solid electrolyte with improved conductivity up to about 0.3 mS/cm, about 12 wt % of polymer.
  • The application also mentions a specific example of a composite solid electrolyte made with LiPSCl and polyvinylidene fluoride (PVDF), which shows a conductivity of about 1 mS/cm.
  • The inventors claim that their method can be used to prepare a wide range of polymer-embedded LiPSX materials, including particles of a lithium phosphorus sulfur halide (LiPSX) disposed in a polymer matrix.

Sources:

  • U.S. Patent Application Number 20250266497, filed February 20, 2025 and posted August 21, 2025. Patent URL: https://ppubs.uspto.gov/pubwebapp/external.html?q=(20250266497)&db=US-PGPUB&type=ids
  • Keywords for this news article include: Sulfur, Alkenes, Neurons, Polyenes, Dendrites, Chalcogens, Phosphorus, Electrolytes, Hydrocarbons, Polyethylenes, Patent Application, Inorganic Chemicals, Cell Surface Extensions.