China Petrochemical had 18 patents in batteries during Q4 2023. The first patent describes a conductive composite material of graphene with conjugated copolymers, which can improve the electrical conductivity of an electrode in a lithium-ion battery. The graphene nano-sheets are pretreated and grafted with alkynyl groups to enhance performance and flexibility during charge-discharge cycling.
The second patent discusses a solid particle bed design with a sea zone and island zones to facilitate the preferential entry of oil into areas with smaller voidage. This design allows for efficient oil deposition and flow control within the solid particle bed. GlobalData’s report on China Petrochemical gives a 360-degreee view of the company including its patenting strategy. Buy the report here.
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China Petrochemical grant share with batteries as a theme is 16% in Q4 2023. Grant share is based on the ratio of number of grants to total number of patents.
Recent Patents
Application: Conductive composite material of graphene, preparation method therefor, use thereof and lithium-ion battery (Patent ID: US20230357019A1)
The patent filed by China Petrochemical Corp. describes a conductive composite material of graphene that includes graphene nano-sheets and conjugated copolymers with alkynyl groups in a linear structure grafted to the graphene nano-sheets. The preparation method involves pretreating the graphene nano-sheets with 4-bromobenzenediazonium tetrafluoroborate and forming the conjugated copolymers in the presence of the pretreated graphene nano-sheets. This composite material can be dispersed in an electrode slurry to reduce internal resistance, improve electrical conductivity, and buffer volume expansion in lithium-ion batteries.
The claims detail the specific characteristics of the conductive composite material, including the specific surface area, mass percentages of graphene nano-sheets and copolymers, type of graphene nano-sheets, and types of conjugated copolymers. The method for preparing the material involves specific steps for pretreating the graphene nano-sheets and forming the copolymers. The use of this conductive composite material in a lithium-ion battery is also claimed, highlighting its potential application in energy storage devices. Overall, the patent focuses on the unique composition and preparation method of the graphene-based material for enhancing battery performance.
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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.
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.
