公开(公告)号：US20240174823A1

公开(公告)日：2024-05-30

申请号：US18183836

申请日：2023-03-14

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY ,  CHUNG ANG UNIVERSITY INDUSTRY ACADEMIC COOPERATION FOUNDATION

Inventor： Jeong Gon SON ,  Seungjun Chung ,  Heesuk Kim ,  Phillip Lee ,  Tae Ann Kim ,  Jae Hong Kim ,  Jung Hur ,  Jonghwi Lee

IPC: C08J5/18 ,  C08J3/24 ,  G09F9/30

CPC classification number: C08J5/18 ,  C08J3/247 ,  G09F9/301 ,  C08J2300/22 ,  C08J2300/26

Abstract: Disclosed is a method of manufacturing a transparent stretchable structure according to various embodiments of the present invention for achieving the above-described objects. The method includes providing a stretchable film and performing a rolling process on the stretchable film to form a transparent stretchable structure, wherein the stretchable film is provided through a thermoplastic elastomer based on physical crosslinking, and nanostructures in the transparent stretchable structure are oriented in one direction through the rolling process.

公开(公告)号：US12051794B2

公开(公告)日：2024-07-30

申请号：US17873598

申请日：2022-07-26

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jeong Gon Son ,  Jong Hyuk Park ,  Sang-Soo Lee ,  Heesuk Kim ,  Seungjun Chung ,  Tae Ann Kim ,  Jae Hong Kim

IPC: H01M4/04 ,  H01M10/0525

CPC classification number: H01M4/0404 ,  H01M10/0525

Abstract: The present disclosure relates to a stretchable electrode, a method for preparing the same and a stretchable battery including the stretchable electrode. The stretchable electrode of the present disclosure, which is prepared by crosslinking a hydroxyl-functionalized fluorine-based polymer binder physically using a ketone-based solvent or chemically with a crosslinking agent, has superior stretchability, has improved interfacial adhesivity to an active material through Fenton's oxidation, exhibits improved stability under various mechanical deformations of the electrode such as stretching, etc. and can uniformly maintain the electrical conductivity, battery capacity and charge-discharge performance of the electrode.
In addition, the stretchable battery of the present disclosure, which includes the stretchable electrode, a stretchable current collector, a stretchable separator and a stretchable encapsulant, has improved stretchability and superior battery stability under various deformations due to high degree of freedom of structures and materials. In addition, the stretchable battery of the present disclosure can be prepared as a fiber battery by printing an electrode and a current collector sequentially on both sides of a stretchable fabric, which can be worn, e.g., around sleeves due to superior stretchability and high structural degree of freedom and retains high battery performance and mechanical stability even under mechanical deformation. Therefore, it can be applied to a mobile display for a health monitoring system or a smartwatch.