公开(公告)号：US20230041555A1

公开(公告)日：2023-02-09

申请号：US17392898

申请日：2021-08-03

Applicant: Khalifa University of Science and Technology ,  Korea University Research and Business Foundation

Inventor： Daniel CHOI ,  Hammad YOUNES ,  Ru LI ,  Young Keun KIM

IPC: H05K9/00 ,  C04B41/50 ,  C04B35/26

Abstract: A device and method for absorbing electromagnetic waves can include a honeycomb sheet formed by a plurality of interconnected hexagon cells arranged in rows. The hexagon cells are made up of sidewalls, each sidewall formed by two surfaces that converge at a top of the sidewall and diverge from the top to a bottom of the sidewall such that a thickness of the sidewalls increases from top to bottom and an angle forms between the two surfaces at the top of the sidewall. In an example, the angle is about 8 degrees. The honeycomb sheet can be coated with a magnetic, composite coating to increase electromagnetic shielding. An example coating includes magnetic multi-granular nanoclusters (MGNC) and multi-walled carbon nanotubes (MWCNT). A base layer can be attached to the honeycomb sheet for mechanical stability and additional absorption. The device is suitable for radar absorbing materials (RAM) for aerospace and military applications.

公开(公告)号：US20220227629A1

公开(公告)日：2022-07-21

申请号：US17287967

申请日：2020-01-15

Applicant: KHALIFA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Daniel CHOI ,  Amarsingh Bhabu KANAGARAJ ,  Prena CHATURVEDI ,  Maryam Sultan AL NAHYAN ,  Hamda AL SHIBLI

IPC: C01B25/45 ,  H01M4/62 ,  H01M4/04 ,  H01M4/485 ,  H01M10/0525 ,  H01M4/131 ,  H01M4/133 ,  H01M4/583 ,  H01M4/36

Abstract: The present invention discloses a hydrothermal process of preparing lithium iron phosphate (LiFePCO4) nanoparticles. It further discloses a composite electrode comprising lithium iron phosphate, multiwalled carbon nanotubes (MWCNTs) and polyvinylidene fluoride as well as a method of manufacturing this composite electrode. It also discloses a free-standing composite electrode comprising spinel-Li4Ti5O12, multiwalled carbon nanotubes and carboxymethyl cellulose as well as a method of manufacturing this free-standing composite electrode.

公开(公告)号：US20240363854A1

公开(公告)日：2024-10-31

申请号：US18688149

申请日：2022-07-15

Applicant: Khalifa University of Science and Technology

Inventor： Daniel CHOI ,  Abhishek Chandrakant LOKHANDE

IPC: H01M4/58 ,  H01G11/24 ,  H01G11/36 ,  H01G11/50 ,  H01G11/52 ,  H01G11/86 ,  H01M4/02 ,  H01M4/62

CPC classification number: H01M4/5815 ,  H01G11/24 ,  H01G11/36 ,  H01G11/50 ,  H01G11/52 ,  H01G11/86 ,  H01M4/625 ,  H01M2004/021 ,  H01M2004/027

Abstract: Methods of preparing metal-sulfide particles, such as for use in lithium-ion capacitors may include preparing a precursor solution. The precursor solution may include a copper-containing precursor and a metal-containing precursor. The methods may include mixing the precursor solution with water to form an aqueous precursor solution. The methods may include adding a sulfur-containing precursor to the aqueous precursor solution to form a sulfur-containing aqueous precursor solution. The methods may include heating the sulfur-containing aqueous precursor solution. The methods may include recovering a precipitate from the sulfur-containing aqueous precursor solution. The precipitate may be or include metal-sulfide particles.