公开(公告)号：US20210283084A1

公开(公告)日：2021-09-16

申请号：US17330760

申请日：2021-05-26

Applicant: CORNELL UNIVERSITY

Inventor： Yong Lak Joo ,  Nathaniel S. Hansen ,  Daehwan Cho

IPC: A61K31/202 ,  D04H1/728 ,  D01D5/00 ,  D04H1/4234 ,  B22F1/00 ,  C04B35/622 ,  B22F9/30 ,  B82Y30/00 ,  D01F9/08 ,  D01F1/10 ,  H01B1/02 ,  H01B1/08 ,  A61K31/232

Abstract: Provided herein are nanofibers and processes of preparing nanofibers. In some instances, the nanofibers are metal and/or ceramic nanofibers. In some embodiments, the nanofibers are high quality, high performance nanofibers, highly coherent nanofibers, highly continuous nanofibers, or the like. In some embodiments, the nanofibers have increased coherence, increased length, few voids and/or defects, and/or other advantageous characteristics. In some instances, the nanofibers are produced by electrospinning a fluid stock having a high loading of nanofiber precursor in the fluid stock. In some instances, the fluid stock comprises well mixed and/or uniformly distributed precursor in the fluid stock. In some instances, the fluid stock is converted into a nanofiber comprising few voids, few defects, long or tunable length, and the like.

公开(公告)号：US11094999B2

公开(公告)日：2021-08-17

申请号：US16429944

申请日：2019-06-03

Applicant: Cornell University

Inventor： Yong Lak Joo ,  Joseph M. Carlin ,  Soshana Smith

IPC: H01M50/446 ,  C25D1/08 ,  H01M10/0525 ,  H01M10/42 ,  H01M50/44 ,  H01M50/403 ,  H01M50/411 ,  H01M50/431 ,  H01M50/449

Abstract: Provided herein are a variety of porous separator materials, particularly those prepared by gas-assisted electrospray and electrospinning processes.

公开(公告)号：US10971729B2

公开(公告)日：2021-04-06

申请号：US15775758

申请日：2016-11-10

Applicant: Cornell University ,  Dongjin Semichem Co., Ltd.

Inventor： Yong Lak Joo ,  Ling Fei ,  Sunchan Park ,  Seon Yeong Gong

IPC: H01M4/1395 ,  H01M4/62 ,  H01M4/134 ,  H01M10/0525 ,  H01M4/04 ,  H01M4/38 ,  H01M4/48 ,  H01M12/08

Abstract: Provided herein are high performance direct deposit electrodes that do not require the use of a binder, as well as processes of manufacturing the same by an electrospray process.

公开(公告)号：US20200001263A1

公开(公告)日：2020-01-02

申请号：US16021835

申请日：2018-06-28

Applicant: Cornell University ,  Buckingham Manufacturing Company, Inc.

Inventor： Timothy R. Batty ,  Yong Lak Joo ,  Mani Korah ,  Yevgen Zhmayev ,  Mounica Jyothi Divvela

IPC: B01J13/14

Abstract: An encapsulation system and method including a solution having a first system with a first rate of removal, a second system with a second rate of removal, and a material soluble in the first system, but not soluble in the second system. The first rate of removal is quicker than the second rate of removal, and removal of the first system from the solution creates a concentration of the second system and the material migrates around the second system. Thus, the material creates a shell around the second system, generating a capsule with a shell of the material and a core of the second system. Such material may include a polymer, copolymer, or block copolymer, while the second system is poor solvent for the material, such as hexadecane or Oil Red O. The first system is a good solvent for the material and is readily removable from solution via evaporation during processes like electrospraying.

公开(公告)号：US10186698B2

公开(公告)日：2019-01-22

申请号：US15101548

申请日：2014-12-03

Applicant: CORNELL UNIVERSITY

Inventor： Yong Lak Joo ,  Daehwan Cho ,  SangHo Lee ,  Masakazu Kobayashi

IPC: D01D5/36 ,  D01F1/10 ,  D01F11/04 ,  H01M2/14 ,  D01D5/00 ,  C04B35/622 ,  C04B35/626 ,  C04B35/632 ,  C04B35/634 ,  C04B35/636 ,  C04B38/06 ,  B01D67/00 ,  B01D71/00 ,  B01D71/02 ,  D04H1/728 ,  H01M2/16 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/02

Abstract: Provided herein are methods for forming nanofibers. The current disclosure provides ceramic nanofibers, morphology-controlled ceramic-polymer hybrid nanofibers, morphology-controlled ceramic nanofibers, core-sheath nanofibers and hollow core nanofibers using ceramic precursor materials and polymer materials which are combined and undergo electrospinning. The current disclosure provides for methods of forming these nanofibers at low temperatures such as room temperature and in the presence of oxygen and moisture wherein the ceramic precursor cures to a ceramic material during the electrospinning process. Also disclosed are the nanofibers prepared by the disclosed methods.

公开(公告)号：US09816206B2

公开(公告)日：2017-11-14

申请号：US14428103

申请日：2013-09-16

Applicant: CORNELL UNIVERSITY

Inventor： Yong Lak Joo ,  Nathaniel S. Hansen

IPC: D01F9/10 ,  C04B35/622 ,  D01D5/00 ,  D01F9/14 ,  C04B35/634 ,  C04B35/636 ,  C01B31/30 ,  C01B31/36 ,  C09K5/14 ,  D01D10/02 ,  H01B1/04

CPC classification number: D01F9/10 ,  C01B32/914 ,  C01B32/956 ,  C04B35/62277 ,  C04B35/62281 ,  C04B35/634 ,  C04B35/6365 ,  C04B2235/3244 ,  C04B2235/327 ,  C04B2235/3272 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3291 ,  C04B2235/3296 ,  C04B2235/3418 ,  C04B2235/40 ,  C04B2235/449 ,  C04B2235/48 ,  C04B2235/526 ,  C04B2235/5264 ,  C04B2235/5296 ,  C04B2235/5409 ,  C04B2235/5454 ,  C04B2235/6562 ,  C04B2235/96 ,  C04B2235/9607 ,  C09K5/14 ,  D01D5/0015 ,  D01D5/0069 ,  D01D10/02 ,  D01F9/14 ,  H01B1/04

Abstract: Provided herein are nanofibers and processes of preparing carbonaceous nanofibers. In some embodiments, the nanofibers are high quality, high performance nanofibers, highly coherent nanofibers, highly continuous nanofibers, or the like. In some embodiments, the nanofibers have increased coherence, increased length, few voids and/or defects, and/or other advantageous characteristics. In some instances, the nanofibers are produced by electrospinning a fluid stock having a high loading of nanofiber precursor in the fluid stock. In some instances, the fluid stock comprises well mixed and/or uniformly distributed precursor in the fluid stock. In some instances, the fluid stock is converted into a nanofiber comprising few voids, few defects, long or tunable length, and the like.

公开(公告)号：US20150099185A1

公开(公告)日：2015-04-09

申请号：US14382403

申请日：2013-02-28

Applicant: CORNELL UNIVERSITY

Inventor： Yong Lak Joo ,  Nathaniel S. Hansen ,  Daehwan Cho ,  Kyoung Woo Kim

IPC: H01M2/16 ,  H01M2/14 ,  H01M10/0525

CPC classification number: H01M2/1633 ,  D01D5/003 ,  D01D5/0069 ,  D01F1/09 ,  D01F1/10 ,  D01F9/20 ,  H01M2/145 ,  H01M2/162 ,  H01M4/0469 ,  H01M4/0471 ,  H01M4/13 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/136 ,  H01M4/1393 ,  H01M4/1395 ,  H01M10/0525 ,  H01M2004/021

Abstract: Lithium ion batteries, electrodes, nanofibers, and methods for producing same are disclosed herein. Provided herein are batteries having (a) increased energy density; (b) decreased pulverization (structural disruption due to volume expansion during lithiation/de-lithiation processes); and/or (c) increased lifetime. In some embodiments described herein, using high throughput, water-based electrospinning process produces nanofibers of high energy capacity materials (e.g., ceramic) with nanostructures such as discrete crystal domains, mesopores, hollow cores, and the like; and such nanofibers providing reduced pulverization and increased charging rates when they are used in anodic or cathodic materials.

Abstract translation: 本文公开了锂离子电池，电极，纳米纤维及其制造方法。 本文提供的电池具有（a）增加的能量密度; （b）减少粉碎（在锂化/脱锂过程中由于体积膨胀引起的结构破坏）; 和/或（c）寿命增加。 在本文所述的一些实施方案中，使用高通量，基于水的静电纺丝方法产生具有纳米结构如高分子晶体域，介孔，中空芯等的高能量材料（例如陶瓷）的纳米纤维; 并且这种纳米纤维当它们用于阳极或阴极材料时提供降低的粉碎和增加的充电速率。

公开(公告)号：US20230082231A1

公开(公告)日：2023-03-16

申请号：US17471678

申请日：2021-09-10

Applicant: DENSO International America, Inc. ,  Center for Technology Licensing Cornell University

Inventor： Yong Lak Joo ,  Naman Gupta ,  Somayeh Zamani ,  Yash Joshi ,  Ryota Okumura ,  Shinichi Ito ,  Elizabeth Izor

IPC: C01B32/19 ,  B05D1/04

Abstract: A coating layer for a substrate includes a coating material. The coating material includes graphene and/or graphene derivatives that reflect and/or absorb an electromagnetic (EM) wave having a frequency of above 20 GHz. The coating layer is deposited on a surface of the substrate.

公开(公告)号：US20210399384A1

公开(公告)日：2021-12-23

申请号：US17360659

申请日：2021-06-28

Applicant: CORNELL UNIVERSITY

Inventor： Yong Lak Joo ,  Nathaniel S. Hansen ,  Daehwan Cho ,  Kyoung Woo Kim

IPC: H01M50/446 ,  D01D5/00 ,  D01F1/10 ,  D01F9/20 ,  H01M4/13 ,  H01M10/0525 ,  H01M50/44 ,  H01M50/403 ,  H01M50/411 ,  D01F1/09 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/1395

Abstract: Lithium ion batteries, electrodes, nanofibers, and methods for producing same are disclosed herein. Provided herein are batteries having (a) increased energy density; (b) decreased pulverization (structural disruption due to volume expansion during lithiation/de-lithiation processes); and/or (c) increased lifetime. In some embodiments described herein, using high throughput, water-based electrospinning process produces nanofibers of high energy capacity materials (e.g., ceramic) with nanostructures such as discrete crystal domains, mesopores, hollow cores, and the like; and such nanofibers providing reduced pulverization and increased charging rates when they are used in anodic or cathodic materials.

公开(公告)号：US20210273294A1

公开(公告)日：2021-09-02

申请号：US17316035

申请日：2021-05-10

Applicant: CORNELL UNIVERSITY

Inventor： Yong Lak Joo ,  Daehwan Cho ,  Yong Seok Kim

IPC: H01M50/44 ,  H01M50/431 ,  H01M50/446 ,  H01M10/0525

Abstract: Provided herein are ceramic nanofibers and processes for preparing the same. In specific examples, provided herein are ceramic nanofiber mats for use as separators in batteries, particularly lithium ion batteries.