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    COMPOSITE MATERIALS WITH TUNABLE POROSITY, PREPARATION AND USES THEREOF
    1.
    发明申请
    COMPOSITE MATERIALS WITH TUNABLE POROSITY, PREPARATION AND USES THEREOF 有权

    公开(公告)号：US20250162873A1

    公开(公告)日：2025-05-22

    申请号：US19028968

    申请日：2025-01-17

    Applicant: Aspen Aerogels, Inc.

    Inventor： Zhifei Li ,  Nicholas Zafiropoulos ,  Ted Hosang Lee ,  Ryan Fedora ,  Justin Ward

    IPC: C01B32/05 ,  C01B33/113

    Abstract: Provided herein are composite materials for use in an electrical energy storage system (e.g., high-capacity batteries) and methods for preparing the same. The composite materials of the present disclosure comprise a three-dimensional carbon network and optional silicon particles. The composite materials further comprise macropores, at least some of which are formed by carbonizing sacrificial particles dispersed throughout a three-dimensional network. The macropores advantageously provide a space to accommodate the strain and stress in the electrode structure due to volume changes of silicon (particles) during charging and discharging of the electrical energy storage systems.

    AQUEOUS POLYIMIDE PROCESSES
    5.
    发明申请
    AQUEOUS POLYIMIDE PROCESSES 有权

    公开(公告)号：US20240376273A1

    公开(公告)日：2024-11-14

    申请号：US18776930

    申请日：2024-07-18

    Applicant: Aspen Aerogels, Inc.

    Inventor： Nicholas Leventis ,  Roxana Trifu ,  Redouance Begag ,  George L. Gould ,  Nicholas A. Zafiropoulos ,  Harris R. Miller

    IPC: C08J3/075 ,  C01B32/05

    Abstract: The present disclosure is directed to methods of forming polyamic acid and polyimide gels in water. The resulting polyamic acid and polyimide gels may be converted to aerogels, which may further be converted to carbon aerogels. Such carbon aerogels have the same physical properties as carbon aerogels prepared from polyimide aerogels obtained according to conventional methods, i.e., organic solvent-based. The disclosed methods are advantageous in reducing or avoiding costs associated with use and disposal of potentially toxic solvents and byproducts. Gel materials prepared according to the disclosed methods are suitable for use in environments involving electrochemical reactions, for example as an electrode material within a lithium-ion battery.

    Aqueous polyimide processes
    7.
    发明授权
    Aqueous polyimide processes 有权

    公开(公告)号：US12077639B2

    公开(公告)日：2024-09-03

    申请号：US17546761

    申请日：2021-12-09

    Applicant: Aspen Aerogels, Inc.

    Inventor： Nicholas Leventis ,  Roxana Trifu ,  Redouane Begag ,  George L. Gould ,  Nicholas A. Zafiropoulos ,  Harris R. Miller

    IPC: C08J3/075 ,  C01B32/05

    CPC classification number: C08J3/075 ,  C01B32/05 ,  C08J2379/08

    Abstract: The present disclosure is directed to methods of forming polyamic acid and polyimide gels in water. The resulting polyamic acid and polyimide gels may be converted to aerogels, which may further be converted to carbon aerogels. Such carbon aerogels have the same physical properties as carbon aerogels prepared from polyimide aerogels obtained according to conventional methods, i.e., organic solvent-based. The disclosed methods are advantageous in reducing or avoiding costs associated with use and disposal of potentially toxic solvents and byproducts. Gel materials prepared according to the disclosed methods are suitable for use in environments involving electrochemical reactions, for example as an electrode material within a lithium-ion battery.

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