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    Rubicane Method for Extraction and Exfoliation of Carbon-Based Molecules into Graphene (from Biochar) in a Frequency Tank Reactor resulting in Biocene
    4.
    发明公开
    Rubicane Method for Extraction and Exfoliation of Carbon-Based Molecules into Graphene (from Biochar) in a Frequency Tank Reactor resulting in Biocene 审中-公开

    公开(公告)号：US20240327222A1

    公开(公告)日：2024-10-03

    申请号：US18121974

    申请日：2023-03-15

    申请人： Rey J. Rubio

    发明人： Rey J. Rubio

    IPC分类号： C01B32/19

    CPC分类号： C01B32/19 ,  C01B2204/04

    摘要： A process for the efficient and cost-effective preparation of graphene from a natural source of carbon, resulting from the combination of mild, natural acids, including citric and acetic acids, with sonic frequency, as well as the use of magnets, to exfoliate graphene nanoplatelets from the natural carbon source. The natural carbon source, referred to as Biochar, can be any organic matter based and converted via pyrolytic and/or gasification means. The process includes tuning the frequency of sound energy to maximize the rate of exfoliation to a resonant frequency with the feed material itself, with a range anywhere between 1 Hz-1 THz. The use of magnets, including ferrous magnets, applies electromagnetic pressure on the as yet exfoliated Biochar fragments, which moves the fragments into the field of sound energy. The resonant exfoliation process that takes place within the bath itself, results in the hexagonal structure needed to produce graphene.

    PERTURBED SYMMETRY IN STACKED GRAPHENE TECHNOLOGIES
    7.
    发明公开
    PERTURBED SYMMETRY IN STACKED GRAPHENE TECHNOLOGIES 审中-公开

    公开(公告)号：US20240199428A1

    公开(公告)日：2024-06-20

    申请号：US18587545

    申请日：2024-02-26

    申请人： Applied Physics, Inc.

    发明人： Gianni Martire

    IPC分类号： C01B32/184 ,  B32B18/00

    CPC分类号： C01B32/184 ,  B32B18/00 ,  C01B2204/04 ,  C01B2204/22 ,  C01B2204/24 ,  C01P2002/77

    摘要： A graphene structure can include multiple graphene layers stacked into a perturbed symmetry. A first graphene layer can be situated a first rotational angle with respect to a rotational axis extending perpendicularly through the first graphene layer, and a second graphene layer can be situated atop the first graphene layer at a second rotational angle with respect to the rotational axis. A third graphene layer can be situated atop the second graphene layer at a third rotational angle with respect to the rotational axis, and the third rotational angle can be different than the second rotational angle. Additional graphene layers can be successively stacked onto the graphene structure, with each layer being set at a different rotational angle than the previous layer. Six total graphene layers can be stacked. The relationship of the ratios between all rotational angles can forms an arithmetic, geometric, or Fibonacci sequence, or another pattern.

    Water-based graphene dispersion made by shear stabilization
    9.
    发明授权
    Water-based graphene dispersion made by shear stabilization 有权

    公开(公告)号：US11932831B2

    公开(公告)日：2024-03-19

    申请号：US17969390

    申请日：2022-10-19

    申请人： Turtle Wax, Inc.

    发明人： Michael A. Schultz

    IPC分类号： C11D3/12 ,  C01B32/194 ,  C01B32/225

    CPC分类号： C11D3/12 ,  C01B32/194 ,  C01B32/225 ,  C01B2204/02 ,  C01B2204/04 ,  C01B2204/32 ,  C01P2004/24 ,  C01P2004/50 ,  C11D2111/14

    摘要： A water-based graphene dispersion is made by shear stabilization. The method of preparing the water-based graphene dispersion using shear stabilization includes adding a composition containing a graphene powder, a super wetter surfactant and a water dispersible rheology agent into water to form an aqueous mixture; and shearing the aqueous mixture under high pressures to break down the thick layers of the graphene powder to thin layers of graphene platelet particles and to form the water-based graphene dispersion with the graphene platelet particles dispersed in the water-based graphene dispersion. The water-based graphene dispersion is stable without visible phase separation after storage at room temperature for at least one year or even more than one year.