QuantumScape. has filed a patent for a battery electrode that combines intercalation chemistry material and conversion chemistry material. The electrode can be used in automotive applications and is part of an electrochemical device with an anode region, electrolyte region, and cathode region. The cathode region contains a higher weight fraction of conversion chemistry active material (greater than 70%) compared to intercalation chemistry active material (less than 30%). The two materials are homogenously mixed in the cathode region. GlobalData’s report on QuantumScape 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 QuantumScape, Hydrogen storage alloys was a key innovation area identified from patents. QuantumScape's grant share as of September 2023 was 38%. Grant share is based on the ratio of number of grants to total number of patents.
Battery device with mixed intercalation and conversion chemistry materials
An electrochemical device has been described in a filed patent (Publication Number: US20230290935A1). The device consists of an anode region, an electrolyte region, and a cathode region. The electrolyte region is positioned between the anode and cathode regions. The cathode region contains both intercalation chemistry active material and conversion chemistry active material, which are homogenously mixed. The weight fraction of the conversion chemistry active material in the cathode region is greater than 70% of the total active material, while the weight fraction of the intercalation chemistry active material is less than 30%.
The patent also mentions different variations of the electrolyte region, including lithium silicon sulfide, lithium, phosphorus, tin, and/or silicon sulfide, garnet electrolyte, or sulfide electrolyte. The conversion chemistry active material in the cathode region can be FeF2, NiF2, FeOxF3-2x, FeF3, MnF3, CoF3, CuF2 materials, or alloys/combinations thereof. The intercalation chemistry active material can be LiFePO4, LixTiyOz, LiNixMn2-xO4, LiCoO2, Li(NiCoMn)O2, and/or Li(NiCoAl)O2 materials. The intercalation chemistry active material can also include Li(NiCoMn)O2, Li(NiCoAl)O2, and Nickel Cobalt Aluminum Oxides (NCA), with a discharge voltage between 1.3V and 2.5V.
The patent further describes that the conversion chemistry active material has a first upper voltage level, while the intercalation chemistry active material has a second upper voltage level, with the first upper voltage level being lower than the second upper voltage level. The cathode region can also contain multiple types of intercalation chemistry active materials and a conversion material. Additionally, the patent mentions the use of a battery management system (BMS) that charges the battery pack using pulse charges.
In summary, the filed patent describes an electrochemical device with specific compositions and configurations of the anode, electrolyte, and cathode regions. The device utilizes a combination of intercalation chemistry active material and conversion chemistry active material in the cathode region, with specific weight fractions. The patent also mentions variations in the electrolyte region and the use of a BMS for charging the battery pack.
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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.
