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公开(公告)号：US20210305570A1
公开(公告)日：2021-09-30
申请号：US16893693
申请日：2020-06-05
Inventor： Jun Kang , Dae Young Kim
IPC: H01M4/587 , H01M10/054 , H01M4/36
Abstract: The present invention relates to a method of manufacturing a nitrogen-carbon aggregate having a hierarchical pore structure, a nitrogen-carbon aggregate manufactured therefrom, and a sodium ion battery including the same. The technical gist of the present invention includes a method of manufacturing a nitrogen-carbon aggregate having a hierarchical pore structure, a nitrogen-carbon aggregate manufactured therefrom, and a sodium ion battery including the same. The method includes a first step of manufacturing a precursor solution including a nitrogen-containing carbon precursor, a second step of disposing a pair of metal wires in the precursor solution, and a third step of applying electric power to the metal wires to discharge a plasma, so that nitrogen is bonded to carbon of the carbon precursor, thus forming nitrogen-doped carbon nanoparticles of a turbostratic structure including micropores in the surface thereof and then forming an aggregate having a meso-macro hierarchical pore structure due to agglomeration of the carbon nanoparticles. The number of active sites in the aggregate is increased due to nitrogen doping.
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公开(公告)号：US11749802B2
公开(公告)日：2023-09-05
申请号：US17356745
申请日：2021-06-24
Inventor： Jun Kang , Dae Young Kim
IPC: H01M4/587 , B01J19/08 , C01B32/05 , H01M4/02 , H01M10/054
CPC classification number: H01M4/587 , B01J19/088 , C01B32/05 , B01J2219/0828 , B01J2219/0877 , B01J2219/0896 , C01P2002/52 , C01P2002/72 , C01P2002/85 , C01P2006/40 , H01M10/054 , H01M2004/027
Abstract: A method for manufacturing a porous carbon material doped with a heterogeneous element and a porous carbon material doped with a heterogeneous element manufactured using the method are proposed. The method includes melting carbon precursor powder that contains one or more kinds of heterogeneous elements selected from metal and nonmetal to prepare a precursor melt; disposing a pair of metal wires in the precursor melt; and applying power to the metal wires to perform plasma-discharge, thus forming and aggregating carbon nanoparticles doped with the heterogeneous element while having a micropore and thereby forming a porous carbon material having a meso-macro hierarchical pore structure. As the heterogeneous element is bound to carbon of the carbon precursor, the carbon nanoparticles are formed in an amorphous structure while being doped with the heterogeneous element, thus increasing an active site.
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公开(公告)号：US20210408543A1
公开(公告)日：2021-12-30
申请号：US17356745
申请日：2021-06-24
Inventor： Jun Kang , Dae Young Kim
Abstract: A method for manufacturing a porous carbon material doped with a heterogeneous element and a porous carbon material doped with a heterogeneous element manufactured using the method are proposed. The method includes melting carbon precursor powder that contains one or more kinds of heterogeneous elements selected from metal and nonmetal to prepare a precursor melt; disposing a pair of metal wires in the precursor melt; and applying power to the metal wires to perform plasma-discharge, thus forming and aggregating carbon nanoparticles doped with the heterogeneous element while having a micropore and thereby forming a porous carbon material having a meso-macro hierarchical pore structure. As the heterogeneous element is bound to carbon of the carbon precursor, the carbon nanoparticles are formed in an amorphous structure while being doped with the heterogeneous element, thus increasing an active site.
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