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1.发明公开公开(公告)号：US20240262692A1
公开(公告)日：2024-08-08
申请号：US18567001
申请日：2021-11-29
发明人： Guanghong PAN , Zhijiang SU , Wenbin LIANG , Chang WEI , Quanbin CHEN
IPC分类号： C01B32/23 , H01M4/02 , H01M10/0525
CPC分类号： C01B32/23 , H01M10/0525 , C01P2002/02 , C01P2002/72 , C01P2002/82 , C01P2004/84 , C01P2006/12 , C01P2006/14 , C01P2006/16 , H01M2004/021 , H01M2004/027
摘要： The present invention relates to the field of carbon materials, and discloses a negative electrode material, a preparation method and application thereof, and a negative electrode plate and application thereof. The negative electrode material has the following features: (1) a total pore volume of the negative electrode material is less than or equal to 0.02 cm3/g, and a volume of mesopores having a pore diameter of 2 nm to 50 nm is 0.0001 cm3/g to 0.02 cm3/g; and (2) a height ratio of a D peak to a G peak, obtained by Raman spectroscopy, of the negative electrode material meets the following condition: 0.20≤ID/IG≤1. The negative electrode material has high structural compactness and small crystal particle size, so that a battery containing the negative electrode material not only has high charge-discharge capacity, high initial coulombic efficiency and excellent rate capability, but also has excellent continuous high-rate cycle performance, and the preparation method is simple in process and low in cost.
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公开(公告)号：US20240191367A1
公开(公告)日：2024-06-13
申请号：US18556492
申请日：2022-03-31
发明人： Yücel SAHIN , Hürmüs GÜRSU , Özge KOYUN , Semih GÖRDÜK
IPC分类号： C25B3/29 , C01B32/184 , C01B32/198 , C01B32/23 , C07D487/22 , C25B1/135 , C25B3/09 , C25B11/043 , H01G11/32 , H01G11/86
CPC分类号： C25B3/29 , C01B32/184 , C01B32/198 , C01B32/23 , C07D487/22 , C25B1/135 , C25B3/09 , C25B11/043 , C01B2204/22 , H01G11/32 , H01G11/86
摘要： Disclosed is a method for producing phthalocyanine-graphene hybrid materials which are covalently bonded by one step and one-pot electrochemical method. The method allows production in one step and does not require a purification procedure. The method includes the process steps of preparing an electrolyte solution having a phthalocyanine compound desired to be obtained simultaneously on a surface of the graphite working electrode, immersing the graphite working electrode into the electrolyte solution, performing a positive potential scanning on the graphite working electrode, converting the graphite working electrode into graphene oxide, converting the graphene oxide into the graphene, bonding the phthalocyanine compound to the graphene covalently in a potential working range scanned simultaneously and enhancing the bonding during the ongoing cycles, obtaining the covalently bonded phthalocyanine-graphene hybrid material obtained based on the applied potential range on the electrode surface, or depositing in solution in powder form.
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公开(公告)号：US20240188443A1
公开(公告)日：2024-06-06
申请号：US18550107
申请日：2022-03-10
发明人： Ayse BEDELOGLU , Ömer Faruk ÜNSAL , Yasin ALTIN
IPC分类号： H10N30/06 , C01B32/194 , C01B32/198 , C01B32/23 , D04H1/4318 , D04H1/4382 , D04H1/728 , D06M10/06 , D06M11/63 , D06M11/76 , D06M101/22 , H10N30/00 , H10N30/098 , H10N30/30 , H10N30/857 , H10N30/87
CPC分类号： H10N30/06 , C01B32/194 , C01B32/198 , C01B32/23 , D04H1/4318 , D04H1/43838 , D04H1/728 , D06M10/06 , D06M11/63 , D06M11/76 , H10N30/098 , H10N30/1061 , H10N30/30 , H10N30/857 , H10N30/878 , C01P2004/03 , D06M2101/22 , D06M2200/00 , D10B2505/00
摘要： The invention relates to an electrode containing reduced graphene oxide nanofiber surface (25) with increased mechanical stress resistance, produced by electrospray method to increase efficiency by using in piezoelectric nanogenerators (40) with graphene electrodes.
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4.发明公开公开(公告)号：US20240182310A1
公开(公告)日：2024-06-06
申请号：US18281554
申请日：2021-11-05
发明人： Seung Yol JEONG , Sun Hye YANG , Geon Woong LEE , Ick Jun KIM , Byeong Guk KIM , Ji Hyeon RYU , Hye Jung LEE , Soo Yeon JEONG
IPC分类号： C01B32/198 , C01B32/225 , C01B32/23 , H01M4/587
CPC分类号： C01B32/198 , C01B32/225 , C01B32/23 , H01M4/587 , C01B2204/04 , C01B2204/22 , C01B2204/32 , C01P2002/84 , C01P2002/88 , C01P2004/04 , C01P2004/61 , C01P2006/12 , C01P2006/40
摘要： The present disclosure relates to a reduced graphene oxide for a secondary battery, a method for preparing the same, an electrode using the same, and a secondary battery using the same. Specifically, the reduced graphene oxide is a powdery two-dimensional crystalline reduced graphene oxide satisfying Relational Expressions 1 to 3 shown below. [Relationship 1] 1≤TQ≤5 [relational expression 2] 100≤EQ≤1,000 [Relationship 3]1≤BETQ≤100. In Relational Expression 1, TQ represents the thickness (nm) of the reduced graphene oxide. In Relational Expression 2, EQ represents the electrical conductivity (S/cm) of the reduced graphene oxide. In Relational Expression 3, BETQ represents the specific surface area (m2/g) of the reduced graphene oxide.
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公开(公告)号：US11873444B1
公开(公告)日：2024-01-16
申请号：US18175072
申请日：2023-02-27
发明人： Yang Bai , Daoxiong Li , Ren Wang , Gang Xie , Danchao Huang , Wenzhe Li , Feng Dai , Jintang Wang , Jing Zhang , Jinsheng Sun
IPC分类号： C09K8/34 , C01B32/23 , C01B32/19 , C01B32/225
CPC分类号： C09K8/34 , C01B32/19 , C01B32/225 , C01B32/23 , C01P2004/62 , C09K2208/10
摘要： A nanographene, a preparation method thereof, and uses thereof are disclosed. The method of preparing the nanographene includes the steps: (1) carrying out a first reaction by contacting a raw material graphite and a first oxidizing agent with an intercalating agent to obtain a modified graphite; (2) performing a second reaction by contacting the modified graphite and an acid with a second oxidizing agent to obtain a graphene pre-product; and (3) subjecting the graphene pre-product to an air-flow exfoliation to prepare a nanographene. An oil-based drilling fluid containing the nanographene produced by the method is also disclosed.
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公开(公告)号：US10082016B2
公开(公告)日：2018-09-25
申请号：US15170392
申请日：2016-06-01
CPC分类号： E21B47/1015 , B82Y30/00 , B82Y40/00 , C01B32/05 , C01B32/194 , C01B32/198 , C01B32/23 , C01B32/25 , C08F226/06 , C09K8/588 , C09K2208/10
摘要： A composition for stabilizing dispersed particles in an ionically charged solution is disclosed. The composition includes a carbonaceous substrate, the carbonaceous substrate operable to undergo a grafting-to approach for functionalization. The composition also includes a covalently bound stabilizing polymer, the covalently bound stabilizing polymer operable to be prepared as a diazonium salt for grafting to the carbonaceous substrate and a plurality of positively and negatively charged subgroups, the plurality of positively and negatively charged subgroups positioned within the covalently bound stabilizing polymer, where the plurality of positively and negatively charged subgroups are operable to stabilize the dispersed particles amongst positively and negatively charged ions within the ionically charged solution.
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公开(公告)号：US10040688B2
公开(公告)日：2018-08-07
申请号：US14783102
申请日：2014-03-28
发明人： Sang Jin Hong , Sung Hun Eom , Myung Sin Lee
CPC分类号： C01B32/23 , B01J8/002 , B01J8/006 , B01J19/1862 , B01J19/1893
摘要： The present disclosure relates to a method for producing graphite oxide and an apparatus therefor.
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公开(公告)号：US20180208468A1
公开(公告)日：2018-07-26
申请号：US15926261
申请日：2018-03-20
发明人： Hyoyoung LEE
IPC分类号： C01B32/198 , C07F5/02 , C01B32/194 , C01B32/192 , C07D493/22
CPC分类号： C01B32/198 , C01B32/192 , C01B32/194 , C01B32/23 , C07D493/22 , C07F5/027
摘要： Functionalized reduced graphene oxide (functionalized rGO), and a method of producing the same are provided. The functionalized reduced graphene oxide comprises reduced graphene oxide which is fluorinated and co-doped with at least one co-dopant selected from the group consisting of B, N and S
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公开(公告)号：US10005099B2
公开(公告)日：2018-06-26
申请号：US14756006
申请日：2015-07-20
发明人： Yi-jun Lin , Shaio-yen Lee , Aruna Zhamu , Bor Z. Jang
IPC分类号： B05D1/28 , B05D1/40 , B05D3/00 , B05D3/12 , C01B32/20 , C01B32/23 , C01B32/184 , B82Y30/00 , B82Y40/00
CPC分类号： B05D1/28 , B05D1/40 , B05D3/007 , B05D3/12 , B82Y30/00 , B82Y40/00 , C01B32/184 , C01B32/20 , C01B32/23
摘要： A process for producing a highly oriented graphene oxide (GO) film, comprising: (a) preparing either a GO dispersion having GO sheets dispersed in a fluid medium or a GO gel having GO molecules dissolved in a fluid medium; (b) dispensing the GO dispersion or gel onto a surface of an application roller rotating in a first direction to form an applicator layer of GO and transferring the applicator layer to a surface of a supporting film driven in a second direction opposite to the first direction to form a wet layer of GO on the supporting film; and (c) removing said fluid medium from the wet layer of GO to form a dried layer of GO having an inter-planar spacing d002 of 0.4 nm to 1.2 nm and an oxygen content no less than 5% by weight. This dried GO layer may be heat-treated to produce a graphitic film.
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公开(公告)号：US20180174700A1
公开(公告)日：2018-06-21
申请号：US15580475
申请日：2016-03-31
申请人： Garmor Inc.
IPC分类号： H01B1/24 , H01B13/00 , C01B32/198 , B05D3/00
CPC分类号： H01B1/24 , B05D3/007 , C01B32/198 , C01B32/23 , C01P2004/61 , C01P2004/62 , C01P2004/64 , C01P2006/32 , C01P2006/40 , H01B13/0016
摘要： The present method includes graphene, preferably in the form of flat graphene oxide flakes with, by mass, preferably between 0.5% and 35% PAN. The graphene oxide and conductive-polymer PAN is in a co-suspension in water and is co-deposited on a surface. The deposited PAN with a high-percentage graphene-oxide layer is dried. Our tests have produced electrical conductivities 1000 times more conductive than the PAN by itself. Our testing indicates that using flakes that are flat is essential to getting very high conductivity, and that controlled oxidation is very important in suspending graphene oxide in water.
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