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    • 81. 发明申请
    • METHOD OF PREPARING NITROGEN-DOPED GRAPHENE AND NITROGEN-DOPED GRAPHENE PREPARED THEREBY
    • 制备氮化石墨和制备的氮化石墨的方法
    • US20120149897A1
    • 2012-06-14
    • US13077777
    • 2011-03-31
    • In Yup JEONJong Haom Baek
    • In Yup JEONJong Haom Baek
    • C07D471/22
    • C07D471/22B82Y30/00B82Y40/00C01B32/19C01B32/225C01B2204/30H01M4/96
    • The present invention relates to a method of preparing a nitrogen-doped graphene comprising preparing a Edge-Functionalized Graphene by binding a graphite with a organic material having amino groups and functional groups such as carboxy acid group through an electrophilic substitution reaction, and heat treating the resultant Edge-Functionalized Graphene, and a nitrogen-doped graphene prepared thereby. According to the present invention, by a more inexpensive and simpler method, a nitrogen-doped graphene can be prepared at higher purity and higher yield. The nitrogen-doped graphene obtained by the present invention has very excellent physical and electric properties, and particularly has a superior oxygen reduction capability, compared with the platinum catalyst used at cathode of a H2/O2 fuel cell so that it will replace the platinum to lower more the cost of a H2/O2 fuel cell or to increase its life and further to provide a new turning point for the commercialization of a H2/O2 fuel cell.
    • 本发明涉及一种制备氮掺杂石墨烯的方法,包括通过亲电取代反应将石墨与具有氨基和官能团如羧酸基团的有机材料结合而制备边缘官能化石墨烯,并将 由此制得的边缘官能化石墨烯和由此制备的掺氮石墨烯。 根据本发明,通过更便宜和更简单的方法,可以以更高的纯度和更高的产率制备掺杂氮的石墨烯。 本发明获得的掺杂氮的石墨烯与H2 / O2燃料电池阴极所用的铂催化剂相比,具有非常优异的物理和电学性质,特别是具有优异的氧还原能力,因此将其替代铂 降低H2 / O2燃料电池的成本或延长其使用寿命,进一步为H2 / O2燃料电池的商业化提供新的转折点。
    • 86. 发明申请
    • STABLE DISPERSIONS OF SINGLE AND MULTIPLE GRAPHENE LAYERS IN SOLUTION
    • 单个和多个石墨层在溶液中的稳定分散
    • US20150270548A1
    • 2015-09-24
    • US14666692
    • 2015-03-24
    • BELENOS CLEAN POWER HOLDING AG
    • Reinhard NesperTommy Kaspar
    • H01M4/587H01B13/32H01B1/04
    • H01M4/587B82Y30/00B82Y40/00C01B32/192C01B2204/02C01B2204/28C01B2204/30H01B1/04H01B13/32H01M10/052Y02E60/324Y02P70/54Y10T428/30
    • A method for producing colloidal graphene dispersions comprises the steps of: (i) stirring graphite oxide in an aqueous dispersion medium to form a dispersion; (ii) determining if the dispersion is optically clear in a light microscope at 1000 fold magnification after 1 to 5 hours of stirring, and, if not clear, removing any undissolved impurities in the dispersion, in order to form a colloidal graphene oxide dispersion, or a multi-graphene oxide dispersion, that is optically clear in a light microscope at 1000 fold magnification; and (iii) thermally reducing the graphene oxide, or multi-graphene oxide, in dispersion in the aqueous dispersion medium at a temperature between 120° C. and 170° C. under pressure in order to ensure that the dispersion medium is not evaporated to form a stable colloidal graphene dispersion or a stable multi-graphene dispersion. Using the method used for the preparation of the starting dispersion a graphene or a multi-graphene dispersion is obtained that can be further processed to multi-graphene with larger inter-planar distances than graphite. Such dispersions and multi-graphenes are suitable materials in the manufacturing of rechargeable lithium ion batteries.
    • 制备胶体石墨烯分散体的方法包括以下步骤:(i)在水性分散介质中搅拌石墨氧化物以形成分散体; (ii)在1〜5小时的搅拌后,在光学显微镜中以1000倍放大率确定分散体是否光学透明,如果不清楚,则除去分散体中的任何未溶解的杂质,以形成胶态石墨烯氧化物分散体, 或多石墨烯氧化物分散体,其在1000倍放大倍数的光学显微镜中是光学透明的; 和(iii)在120℃和170℃之间的温度下在压力下将氧化石墨烯或氧化石墨烯在热分解中热分解,以确保分散介质不被蒸发 形成稳定的胶体石墨烯分散体或稳定的多石墨烯分散体。 使用用于制备起始分散体的方法,获得石墨烯或多石墨烯分散体,其可以进一步加工成具有比石墨更大的平面间距离的多石墨烯。 这种分散体和多石墨烯是可再生锂离子电池制造中的合适材料。
    • 87. 发明申请
    • LIGHT EMITTING BODY
    • 发光体
    • US20130181166A1
    • 2013-07-18
    • US13824830
    • 2011-08-24
    • Hiroyuki Tetsuka
    • Hiroyuki Tetsuka
    • C09K11/65C09K11/06
    • C09K11/65B82Y30/00B82Y40/00C01B32/192C01B2204/04C01B2204/20C01B2204/30C09K2211/1416H01L33/02H01L33/34
    • A light emitting body has a base material containing a graphene structure and a covering material for covering a surface of the base material. The graphene structure preferably includes a sheet portion made of a monolayer or multilayer graphene nanosheet and having, at an edge portion thereof, an armchair edge-face portion; and a terminal six-membered ring bound to the armchair edge-face portion while sharing only one side therewith. Further, the graphene structure preferably includes a nitrogen-containing functional group bound to any one or more carbon atoms selected from (a) carbon atoms constituting the terminal six-membered ring but not bound to the armchair edge-face portion, and (b) carbon atoms constituting the sheet portion (including carbon atom on the side shared with the terminal six-membered ring).
    • 发光体具有包含石墨烯结构的基材和覆盖基材表面的覆盖材料。 石墨烯结构优选包括由单层或多层石墨烯纳米片制成的薄片部分,并且在其边缘部分处具有扶手椅边缘面部分; 以及结合到扶手椅边缘面部分上的端子六元环,同时仅具有一侧。 此外,石墨烯结构优选包含与选自(a)构成末端六元环但未结合到扶手椅边缘面部的碳原子上的任何一个或多个碳原子结合的含氮官能团,(b) 构成片状部分的碳原子(包括与末端六元环共有的一侧上的碳原子)。
    • 88. 发明申请
    • NITROGEN-CONTAINING GRAPHENE STRUCTURE AND PHOSPHOR DISPERSION
    • 含氮的结构和磷光体分布
    • US20130181165A1
    • 2013-07-18
    • US13824851
    • 2011-08-24
    • Hiroyuki TetsukaKazuo Okamoto
    • Hiroyuki TetsukaKazuo Okamoto
    • C09K11/06
    • C09K11/06B82Y30/00B82Y40/00C01B32/192C01B32/194C01B2204/20C01B2204/30C09K11/65C09K2211/1011C09K2211/1416H01L33/502
    • A nitrogen-containing graphene structure has a graphene structure including a monolayer or multilayer graphene nanosheet and nitrogen introduced into the graphene structure. The nitrogen-containing graphene structure preferably includes the above-described graphene structure having a sheet portion comprised of a monolayer or multilayer graphene nanosheet and containing, at an edge portion thereof, an armchair edge-face portion and a terminal six-membered ring bound to the armchair edge-face portion while sharing only one side therewith; and a nitrogen-containing functional group bound to any one or more carbon atoms selected from (a) the carbon atoms constituting the terminal six-membered ring but not bound to the armchair edge-face portion, and (b) the carbon atoms constituting the sheet portion (including the carbon atom on the side shared by the terminal six-membered ring). A phosphor dispersion is a dispersion of such a nitrogen-containing graphene structure in a solvent.
    • 含氮石墨烯结构具有石墨烯结构,其包括单层或多层石墨烯纳米片和引入到石墨烯结构中的氮。 含氮石墨烯结构优选包括上述石墨烯结构,其具有由单层或多层石墨烯纳米片构成的片部分,并且在其边缘部分包含扶手椅边缘面部分和结合至 扶手椅边缘面部分,同时仅具有一侧; 和(a)构成末端六元环但不结合到扶手椅边缘面部分的碳原子的任何一个或多个碳原子结合的含氮官能团,和(b)构成末端六元环的碳原子 片状部分(包括由末端六元环共有的碳原子)。 荧光体分散体是这种含氮石墨烯结构在溶剂中的分散体。