公开(公告)号：US10479905B2

公开(公告)日：2019-11-19

申请号：US15836310

申请日：2017-12-08

Applicant: Northwestern University ,  Regents of the University of Minnesota

Inventor： Mark C. Hersam ,  Ethan B. Secor ,  Sooman Lim ,  C. Daniel Frisbie ,  Lorraine F. Francis ,  Woo Jin Hyun

IPC: G03F7/12 ,  C09D11/52 ,  C09D11/033 ,  C09D11/037

Abstract: Graphene ink compositions as can be utilized with gravure and screen printing processes, to provide flexible electronic components with high-resolution printed graphene circuitry.

公开(公告)号：US09840634B2

公开(公告)日：2017-12-12

申请号：US14699822

申请日：2015-04-29

Applicant: Northwestern University ,  Regents of the University of Minnesota

Inventor： Mark C. Hersam ,  Ethan B. Secor ,  Sooman Lim ,  C. Daniel Frisbie ,  Lorraine F. Francis ,  Woo Jin Hyun

IPC: C09D11/52 ,  G03F7/12 ,  C09D11/033 ,  C09D11/037

CPC classification number: C09D11/52 ,  C09D11/033 ,  C09D11/037 ,  G03F7/12

Abstract: Graphene ink compositions as can be utilized with gravure and screen printing processes, to provide flexible electronic components with high-resolution printed graphene circuitry.

公开(公告)号：US20230352729A1

公开(公告)日：2023-11-02

申请号：US18246197

申请日：2021-09-28

Applicant: NORTHWESTERN UNIVERSITY

Inventor： Mark C. Hersam ,  Woo Jin Hyun

IPC: H01M10/0564 ,  H01M10/0525

CPC classification number: H01M10/0564 ,  H01M10/0525 ,  H01M2300/0085

Abstract: A heterostructure ionogel electrolyte includes a first electrolyte comprising a first ionic liquid and a matrix; and a second electrolyte comprising a second ionic liquid and the matrix, wherein the first ionic liquid is a high-potential ionic liquid, the second ionic liquid is a low-potential ionic liquid, and the matrix comprises nanoplatelets/nanosheets; and wherein the first electrolyte and the second electrolyte are assembled to define a heterointerface therebetween.

公开(公告)号：US20230087700A1

公开(公告)日：2023-03-23

申请号：US17798618

申请日：2021-01-28

Applicant: NORTHWESTERN UNIVERSITY

Inventor： Mark C. Hersam ,  Woo Jin Hyun

IPC: C09D11/52 ,  C09D11/033

Abstract: One aspect of this invention relates to hexagonal boron nitride (hBN) ionogel inks using exfoliated hBN nanoplatelets as the solid matrix. The hBN nanoplatelets are produced from bulk hBN powders by liquid-phase exfoliation, allowing printable hBN ionogel inks to be formulated following the addition of an imidazolium ionic liquid and ethyl lactate. The resulting inks are reliably printed with variable patterns and controllable thicknesses by aerosol jet printing, resulting in hBN ionogels that possess high room-temperature ionic conductivities and storage moduli of >3 mS cm-1 and >1 MPa, respectively. By integrating the hBN ionogel with printed semiconductors and electrical contacts, fully-printed thin-film transistors with operating voltages below 1 V are demonstrated on polyimide films. These devices exhibit desirable electrical performance and robust mechanical tolerance against repeated bending cycles, thus confirming the suitability of hBN ionogels for printed and flexible electronics.

公开(公告)号：US20230065149A1

公开(公告)日：2023-03-02

申请号：US17968180

申请日：2022-10-18

Applicant: NORTHWESTERN UNIVERSITY

Inventor： Mark C. Hersam ,  Woo Jin Hyun ,  Lindsay E. Chaney

IPC: H01M10/0565 ,  H01M10/0525 ,  H01M10/0585 ,  H01M4/62

Abstract: One aspect of the invention relates to an ionogel electrolyte ink including an ionic liquid; and a gelling matrix material. The gelling matrix material is mixed with the ionic liquid in at least one solvent.

公开(公告)号：US20220209293A1

公开(公告)日：2022-06-30

申请号：US17613166

申请日：2020-05-18

Applicant: NORTHWESTERN UNIVERSITY

Inventor： Mark C. Hersam ,  Woo Jin Hyun

IPC: H01M10/0565 ,  H01M10/0525 ,  H01M4/485 ,  H01M4/583 ,  H01M4/38 ,  H01M4/525 ,  H01M4/505

Abstract: This invention discloses high-modulus, ion-conductive gel electrolytes and methods of making the gel electrolytes and electrochemical devices. The gel electrolytes include an ionic liquid and nanosheets mixed in the ionic liquid. The nanosheets in one example include exfoliated hexagonal boron nitride (hBN) nanosheets. Compared to conventional bulk hBN microparticles, exfoliated hBN nanosheets improve the mechanical properties of the gel electrolytes by about 2 orders of magnitude, while retaining high ionic conductivity at room temperature. Moreover, exfoliated hBN nanosheets are compatible with high-voltage cathodes, and impart exceptional thermal stability that allows high-rate operation of solid-state rechargeable lithium-ion batteries at high temperatures.

公开(公告)号：US20150307730A1

公开(公告)日：2015-10-29

申请号：US14699822

申请日：2015-04-29

Applicant: Northwestern University ,  Regents of the University of Minnesota

Inventor： Mark C. Hersam ,  Ethan B. Secor ,  Sooman Lim ,  C. Daniel Frisbie ,  Lorraine F. Francis ,  Woo Jin Hyun

IPC: C09D11/52 ,  C09D11/033 ,  G03F7/12

CPC classification number: C09D11/52 ,  C09D11/033 ,  C09D11/037 ,  G03F7/12

Abstract: Graphene ink compositions as can be utilized with gravure and screen printing processes, to provide flexible electronic components with high-resolution printed graphene circuitry.

Abstract translation: 石墨烯油墨组合物可用于凹版和丝网印刷工艺，以提供具有高分辨率印刷石墨烯电路的柔性电子部件。