公开(公告)号：US11050118B2

公开(公告)日：2021-06-29

申请号：US16035823

申请日：2018-07-16

Applicant: CORNELL UNIVERSITY

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

IPC: H01M2/16 ,  H01M10/0525 ,  H01M50/446 ,  D01D5/00 ,  D01F1/10 ,  D01F9/20 ,  H01M4/13 ,  H01M50/44 ,  H01M50/403 ,  H01M50/411 ,  D01F1/09 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/131 ,  H01M4/136 ,  H01M4/02 ,  H01M4/04 ,  H01M4/134

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：US11018385B2

公开(公告)日：2021-05-25

申请号：US16071804

申请日：2017-01-20

Applicant: Cornell University

Inventor： Yong Lak Joo ,  Jaehyuk Lee

IPC: H01M10/52 ,  H01M4/134 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/62 ,  H01M4/66 ,  H01M4/80 ,  H01M4/38 ,  H01M4/04 ,  H01M4/36 ,  H01M4/58

Abstract: Provided herein are positive electrodes for lithium batteries, particularly lithium sulfur batteries, and the manufacture thereof. Particularly, such electrodes have good performance characteristics, such as capacity and capacity retention, even at very high loading of sulfur (e.g., >5 mg/cm2), as well as flexibility. Exemplary manufacturing techniques include the electrospraying of sulfur (e.g., electrode active sulfur compounds), and an optional additive (e.g., a nanostructured conductive additive), onto a porous, conductive substrate (e.g., a porous carbon substrate, such as comprising multiple layers and/or domains).

公开(公告)号：US20190207186A1

公开(公告)日：2019-07-04

申请号：US16230665

申请日：2018-12-21

Applicant: CORNELL UNIVERSITY

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

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

CPC classification number: H01M2/145 ,  B01D67/0041 ,  B01D67/0079 ,  B01D71/00 ,  B01D71/024 ,  B01D2323/39 ,  C04B35/6224 ,  C04B35/6269 ,  C04B35/632 ,  C04B35/634 ,  C04B35/63468 ,  C04B35/63488 ,  C04B35/6365 ,  C04B38/065 ,  C04B2235/3418 ,  C04B2235/48 ,  C04B2235/483 ,  C04B2235/526 ,  C04B2235/5296 ,  C04B2235/5409 ,  D01D5/003 ,  D01D5/0038 ,  D04H1/728 ,  H01M2/1633 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/028 ,  C04B38/067 ,  C04B38/0695

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：US20190123321A1

公开(公告)日：2019-04-25

申请号：US16220874

申请日：2018-12-14

Applicant: CORNELL UNIVERSITY

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

IPC: H01M2/16 ,  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.

公开(公告)号：US20180209072A1

公开(公告)日：2018-07-26

申请号：US15876439

申请日：2018-01-22

Applicant: CORNELL UNIVERSITY

Inventor： Yong Lak Joo ,  Daehwan Cho ,  Alexander Naydich

IPC: D01F6/18 ,  D01F1/10 ,  B01D39/08 ,  B01D67/00 ,  B01D69/14 ,  D01F6/14 ,  D01D5/00 ,  B01D71/42 ,  D04H1/728 ,  D04H3/009 ,  D01F9/08 ,  B01D71/02 ,  B01D71/38

CPC classification number: D01F6/18 ,  B01D39/08 ,  B01D67/0079 ,  B01D69/148 ,  B01D71/024 ,  B01D71/38 ,  B01D71/42 ,  B01D2323/39 ,  D01D5/0007 ,  D01D5/0023 ,  D01D5/003 ,  D01D5/0069 ,  D01F1/10 ,  D01F6/14 ,  D01F9/08 ,  D04H1/728 ,  D04H3/009 ,  D10B2321/06 ,  D10B2321/10 ,  D10B2505/04 ,  Y10T428/2933 ,  Y10T428/298

Abstract: Described herein are nanofibers and methods for making nanofibers that include any one or more of (a) a non-homogeneous charge density; (b) a plurality of regions of high charge density; and/or (c) charged nanoparticles or chargeable nanoparticles. In one aspect, the present invention fulfills a need for filtration media that are capable of both high performance (e.g., removal of particle sizes between 0.1 and 0.5 μm) with a low pressure drop, however the invention is not limited in this regard.

公开(公告)号：US20170191193A1

公开(公告)日：2017-07-06

申请号：US15463226

申请日：2017-03-20

Applicant: CORNELL UNIVERSITY

Inventor： Yong Lak Joo ,  Kyoung Woo Kim ,  Yong Seok Kim

IPC: D01F9/21 ,  D01D5/00 ,  D01F1/02 ,  D01D1/02

CPC classification number: D01D5/0015 ,  D01D1/02 ,  D01D5/003 ,  D01D5/0069 ,  D01F1/02 ,  D01F9/12 ,  D01F9/20 ,  D01F9/328 ,  D04H1/728 ,  H01M4/587 ,  H01M10/0525

Abstract: Provided herein are nanofibers comprising carbon precursors, nanofibers comprising carbon matrices, and processes for preparing the same. In specific examples, provided herein are high performance lithium ion battery anodic nanofibers comprising non-aggregated silicon domains in a continuous carbon matrix.

公开(公告)号：US20170009380A1

公开(公告)日：2017-01-12

申请号：US15271682

申请日：2016-09-21

Applicant: CORNELL UNIVERSITY

Inventor： Yong Lak Joo ,  Kyoung Woo Kim

IPC: D01D5/00 ,  D01D5/34

CPC classification number: D01D5/0069 ,  D01D5/34

Abstract: Provided herein are electrospinning systems, apparatuses, components, and processes for the preparation of nanofibers, including high throughput systems, apparatuses, and processes for producing high performance nanofibers.

Abstract translation: 本文提供了用于制备纳米纤维的静电纺丝系统，装置，组件和方法，包括用于生产高性能纳米纤维的高通量系统，装置和方法。

公开(公告)号：US20160308184A1

公开(公告)日：2016-10-20

申请号：US15101548

申请日：2014-12-03

Applicant: CORNELL UNIVERSITY

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

IPC: H01M2/14 ,  C04B35/634 ,  C04B35/626 ,  D04H1/728 ,  H01M4/525 ,  H01M10/0525 ,  D01D5/00 ,  C04B35/622 ,  H01M2/16

CPC classification number: H01M2/145 ,  B01D67/0041 ,  B01D67/0079 ,  B01D71/00 ,  B01D71/024 ,  B01D2323/39 ,  C04B35/6224 ,  C04B35/6269 ,  C04B35/632 ,  C04B35/634 ,  C04B35/63468 ,  C04B35/63488 ,  C04B35/6365 ,  C04B38/065 ,  C04B2235/3418 ,  C04B2235/48 ,  C04B2235/483 ,  C04B2235/526 ,  C04B2235/5296 ,  C04B2235/5409 ,  D01D5/003 ,  D01D5/0038 ,  D04H1/728 ,  H01M2/1633 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/028 ,  C04B38/067 ,  C04B38/0695

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.

Abstract translation: 本文提供了形成纳米纤维的方法。 本公开提供使用陶瓷前体材料的陶瓷纳米纤维，形态控制的陶瓷 - 聚合物混合纳米纤维，形态控制的陶瓷纳米纤维，芯鞘纳米纤维和中空核心纳米纤维，其组合并进行静电纺丝。 本公开提供了在低温例如室温下和在氧气和水分存在下形成这些纳米纤维的方法，其中陶瓷前体在静电纺丝过程中固化成陶瓷材料。 还公开了通过所公开的方法制备的纳米纤维。

公开(公告)号：US20160201227A1

公开(公告)日：2016-07-14

申请号：US14912981

申请日：2014-08-21

Applicant: CORNELL UNIVERSITY

Inventor： Yong Lak Joo ,  Brian Williams

IPC: D01F9/12 ,  D01F2/28 ,  D01F6/18 ,  D01D5/00 ,  D01D5/247

CPC classification number: D01F9/12 ,  D01D5/0007 ,  D01D5/003 ,  D01D5/247 ,  D01F1/08 ,  D01F2/28 ,  D01F6/18 ,  D01F9/14 ,  D10B2101/12 ,  D10B2401/10

Abstract: Described herein are nanofibers and methods for making porous carbon nanofibers. The pores have of any suitable size or shape. The presence and/or ordering of the pores results in a high surface area and/or high specific surface area. Such carbon is useful in a number of applications where high surface area carbon is desirable.

Abstract translation: 本文描述了纳米纤维和制备多孔碳纳米纤维的方法。 孔具有任何合适的尺寸或形状。 孔的存在和/或排序导致高表面积和/或高比表面积。 这种碳可用于需要高表面积碳的许多应用中。

公开(公告)号：US12005040B2

公开(公告)日：2024-06-11

申请号：US17330760

申请日：2021-05-26

Applicant: CORNELL UNIVERSITY

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

IPC: H01B1/20 ,  A61K31/202 ,  A61K31/232 ,  B22F1/054 ,  B22F1/07 ,  B22F9/30 ,  B82Y30/00 ,  C04B35/622 ,  D01D5/00 ,  D01F1/10 ,  D01F9/08 ,  D04H1/4234 ,  D04H1/728 ,  H01B1/02 ,  H01B1/08

CPC classification number: A61K31/202 ,  A61K31/232 ,  B22F1/0547 ,  B22F1/07 ,  B22F9/30 ,  B82Y30/00 ,  C04B35/62227 ,  C04B35/62231 ,  C04B35/62236 ,  C04B35/6224 ,  C04B35/6225 ,  C04B35/62254 ,  C04B35/62259 ,  D01D5/0007 ,  D01D5/0015 ,  D01F1/10 ,  D01F9/08 ,  D04H1/4234 ,  D04H1/728 ,  H01B1/02 ,  H01B1/026 ,  H01B1/08 ,  C04B2235/40 ,  C04B2235/441 ,  C04B2235/443 ,  C04B2235/444 ,  C04B2235/449 ,  C04B2235/526 ,  C04B2235/5264 ,  C04B2235/5296

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.