Northvolt has filed a patent for a system that produces electrical energy from chemical reagents in a compartmentalized cell. The system includes electrodes, a separator, and an ionic liquid electrolyte system. The rechargeable battery cell features lithium metal electrodes and an ionic liquid electrolyte. GlobalData’s report on Northvolt gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Northvolt, Hydrogen storage alloys was a key innovation area identified from patents. Northvolt's grant share as of January 2024 was 12%. Grant share is based on the ratio of number of grants to total number of patents.
Rechargeable battery cell with lithium metal and ionic liquid electrolyte
A rechargeable battery cell has been patented with a unique design that includes a negative electrode made of lithium metal supported on a metalized plastic film, a positive electrode with an intercalation material, a separator, and an ionic liquid electrolyte. The metalized plastic film can be a copperized plastic film with a thickness ranging from 3-30 micrometers. The intercalation material in the positive electrode is a metal oxide with specific composition requirements, and the ionic liquid electrolyte includes an ionic liquid solvent, a non-fluorinated ether co-solvent, and a lithium salt solute.
Furthermore, the patent includes specific concentrations and compositions for various components of the rechargeable battery cell, such as the intercalation material, the ionic liquid solvent, the non-fluorinated ether, and the lithium salt solute. The negative electrode may also contain additional elements like sodium, silicon, aluminum, and others that form an alloy with the lithium metal. Additionally, the ionic liquid electrolyte may include a fluorinated ether and a wetting agent to reduce viscosity and polarity. The non-fluorinated ether in the electrolyte is specified to be a linear ether, and the lithium salt solute is identified as lithium bis(fluorosulfonyl)imide (LiFSI). These specific compositions and concentrations aim to enhance the performance and efficiency of the rechargeable battery cell, providing a novel and potentially impactful solution in the field of battery technology.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
