公开(公告)号：US12157705B2

公开(公告)日：2024-12-03

申请号：US18228369

申请日：2023-07-31

Applicant: California Institute of Technology

Inventor： Katherine T. Faber ,  Julia A. Kornfield ,  Noriaki Arai ,  Orland Bateman ,  Rustem F. Ismagilov

IPC: C04B38/06 ,  B01D67/00 ,  B01D69/02 ,  B01D71/02 ,  B01J35/56 ,  B01J35/64 ,  C04B38/00 ,  H01B1/14 ,  H01B1/16

Abstract: Provided herein are methods for making a freeze-cast material having a internal structure, the methods comprising steps of: determining the internal structure of the material, the internal structure having a plurality of pores, wherein: each of the plurality of pores has directionality; and the step of determining comprises: selecting a temperature gradient and a freezing front velocity to obtain the determined internal structure based on the selected temperature gradient and the selected freezing front velocity; directionally freezing a liquid formulation to form a frozen solid, the step of directionally freezing comprising: controlling the temperature gradient and the freezing front velocity to match the selected temperature gradient and the selected freezing front velocity during directionally freezing; wherein the liquid formulation comprises at least one solvent and at least one dispersed species; and subliming the at least one solvent out of the frozen solid to form the material.

公开(公告)号：US20240186653A1

公开(公告)日：2024-06-06

申请号：US18369645

申请日：2023-09-18

Applicant: TalosTech LLC ,  California Institute of Technology

Inventor： Hansan Liu ,  Chun-Wei Wu ,  Xiaoping Lin ,  Katherine T. Faber

IPC: H01M50/446 ,  H01M10/054 ,  H01M50/403 ,  H01M50/434 ,  H01M50/491 ,  H01M50/494 ,  H01M50/497

CPC classification number: H01M50/446 ,  H01M10/054 ,  H01M50/403 ,  H01M50/434 ,  H01M50/491 ,  H01M50/494 ,  H01M50/497

Abstract: Separator membranes for ion batteries and methods of producing such separator membranes are disclosed herein. The separator membranes have vertically-aligned pores that have as small as submicron diameters at one or both membrane surfaces. The separator membranes may be fabricated via a novel and innovative bidirectional freeze-casting process that produces a temperature gradient in two directions. The separator membranes disclosed herein and fabricated by this method can be used in ion batteries, such as sodium ion batteries.

公开(公告)号：US11242290B2

公开(公告)日：2022-02-08

申请号：US16549954

申请日：2019-08-23

Applicant: California Institute of Technology

Inventor： Katherine T. Faber ,  Julia A. Kornfield ,  Noriaki Arai ,  Orland Bateman ,  Rustem F. Ismagilov

IPC: C04B38/06 ,  B01D67/00 ,  B01D69/02 ,  B01D71/02 ,  B01J35/04 ,  B01J35/10 ,  C04B38/00 ,  H01B1/14 ,  H01B1/16

Abstract: Provided herein are methods for making a freeze-cast material having a internal structure, the methods comprising steps of: determining the internal structure of the material, the internal structure having a plurality of pores, wherein: each of the plurality of pores has directionality; and the step of determining comprises: selecting a temperature gradient and a freezing front velocity to obtain the determined internal structure based on the selected temperature gradient and the selected freezing front velocity; directionally freezing a liquid formulation to form a frozen solid, the step of directionally freezing comprising: controlling the temperature gradient and the freezing front velocity to match the selected temperature gradient and the selected freezing front velocity during directionally freezing; wherein the liquid formulation comprises at least one solvent and at least one dispersed species; and subliming the at least one solvent out of the frozen solid to form the material.

公开(公告)号：US11760698B2

公开(公告)日：2023-09-19

申请号：US17560956

申请日：2021-12-23

Applicant: California Institute of Technology

Inventor： Katherine T. Faber ,  Julia A. Kornfield ,  Noriaki Arai ,  Orland Bateman ,  Rustem F. Ismagilov

IPC: C04B38/06 ,  B01D67/00 ,  B01D69/02 ,  B01D71/02 ,  B01J35/04 ,  B01J35/10 ,  C04B38/00 ,  H01B1/14 ,  H01B1/16

CPC classification number: C04B38/0605 ,  B01D67/0051 ,  B01D69/02 ,  B01D71/024 ,  B01J35/04 ,  B01J35/1071 ,  B01J35/1076 ,  C04B38/007 ,  C04B38/0038 ,  C04B38/0054 ,  C04B38/0093 ,  H01B1/14 ,  H01B1/16 ,  B01D2325/021 ,  B01D2325/26

Abstract: Provided herein are methods for making a freeze-cast material having a internal structure, the methods comprising steps of: determining the internal structure of the material, the internal structure having a plurality of pores, wherein: each of the plurality of pores has directionality; and the step of determining comprises: selecting a temperature gradient and a freezing front velocity to obtain the determined internal structure based on the selected temperature gradient and the selected freezing front velocity; directionally freezing a liquid formulation to form a frozen solid, the step of directionally freezing comprising: controlling the temperature gradient and the freezing front velocity to match the selected temperature gradient and the selected freezing front velocity during directionally freezing; wherein the liquid formulation comprises at least one solvent and at least one dispersed species; and subliming the at least one solvent out of the frozen solid to form the material.