Composite structure of flexible carbonaceous bag, manufacturing method thereof, electrode including same and energy storage device including same
A composite structure, energy storage device technology, applied in the direction of active material electrodes, fuel cell type half cells and secondary battery type half cells, hybrid capacitor electrodes, etc., can solve the problem of insufficient active material content, low cost efficiency, and limitations. Specific capacity and other issues, to achieve the effects of high specific capacity, improved electrical conductivity, and high weight efficiency
Active Publication Date: 2022-04-22
KOREA ADVANCED INST OF SCI & TECH
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Problems solved by technology
However, these Si composites still have insufficient active material content in the composite, limiting the specific capacity for high energy density in full cells, and consume less than 85% of Li ions during the first cycle than the initial CE (ICE) %
Moreover, synthetic processes for precisely fabricating structures, such as high-frequency (HF) etching processes, high-temperature gas-phase synthesis, and hard-template operations, are far from practical applications due to factors such as low cost efficiency, safety, and scalability.
Method used
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[0167]
[0168] All reagents were used as obtained from commercial sources (Junsei, Henkel, Graphene Supermarket, US Research Nanomaterials, Inc., Angstron Materials and Duksan) and were used without purification unless otherwise specified. Specifically, silicon nanoparticles (particle size: 30 nm to 50 nm, 98+%) were purchased from Nanostructured & Amorphous Materials, Inc. . Potassium hydroxide (KOH) was purchased from Junsei. Cyanoacrylate glue was purchased from Henkel. Graphene powder was purchased from Graphene Supermarket, US Research Nanomaterials, Inc. and Angstron Materials. Acetone and distilled water were purchased from Duksan. All chemicals were used as is in air.
[0169]
[0170] Graphene powder and silicon nanoparticles were mixed in acetone at specific weight ratios (1:9, 2:8, 3:7, and 4:6) using sonication. Then, pour the cyanoacrylate glue monomer into the mixed solution and shake it several times by hand immediately. At this point, control the amou...
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Abstract
The present disclosure relates to: a flexible carbonaceous pouch composite structure comprising functional particles encapsulated in a flexible carbonaceous pouch formed from a carbonaceous sheet; a method of manufacturing the flexible carbonaceous pouch composite structure, by which The method can quickly mass-produce a flexible carbon bag composite structure; an electrode including the flexible carbon bag composite structure; and an energy storage device including the electrode.
Description
technical field [0001] The present disclosure relates to a flexible carbonaceous bag composite structure comprising a variety of particles encapsulated in a flexible carbonaceous bag formed by a carbonaceous sheet, a method for preparing the flexible carbonaceous bag composite structure, including the flexible carbonaceous bag composite An electrode of the structure, and an energy storage device comprising the electrode. Background technique [0002] Over time, the demand for energy storage devices with higher energy density has exploded, and lithium-ion batteries (LIBs) have been of great interest. However, ever-evolving various systems require higher levels of energy storage, and there is a particular need to improve anode materials for LIBs to meet this demand. [0003] Despite extensive research to improve anode materials, the performance of LIBs used in real life remains stagnant. Due to these issues, lithium metal batteries that ultimately reduce the specific gravity...
Claims
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IPC IPC(8): H01M4/36H01M4/1393H01M4/1395H01M4/133H01M4/134H01M10/0525C01B33/02C01B32/182
CPCH01M4/134H01M4/1395H01M10/0525C01B32/194C01B33/00H01M4/13H01M10/052H01M10/054H01M4/139H01M4/386H01M4/625H01M4/366H01M2004/027H01G11/26H01G11/36H01G11/50H01G11/06C01P2004/03C01P2004/04C01P2002/85C01P2002/72C01P2002/88C01P2002/82C01P2002/89C01P2006/40H01G11/86Y02E60/10H01M4/362H01M4/38H01M4/587H01M12/08H01G11/32H01G11/38C01B32/182C01B33/02Y02E60/13
Inventor 姜正九元钟皓郑炯模
Owner KOREA ADVANCED INST OF SCI & TECH