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    • 112. 发明申请
    • A preparation method of graphene and graphene oxide based on mixed acid system
    • 基于混合酸体系的石墨烯和氧化石墨烯的制备方法
    • US20160311688A1
    • 2016-10-27
    • US15106842
    • 2013-12-31
    • SHENZHEN CANTONNET ENERGY SERVICES CO. , LTD.
    • Linde ZHANGMingdong ZHANG
    • C01B31/04
    • C01B31/0476C01B32/192C01B32/23
    • The present invention relates to a preparation method of graphene oxide based on mixed acid system. The method consists of the following steps. a. Preparation of graphite powder; b. Preparation of suspension liquid of first acid system; c. Preparation of second acid system; d. Preparation of graphene oxide. The invention also relates to a preparation method of graphene using graphene oxide obtained by method mentioned above. The method consists of the following steps. e. Preparation of graphene oxide-dispersant solution; f. Reduction of graphene oxide; g. Process of supersonic stripping; h. Obtaining graphene by separation and drying. The preparation methods of graphene oxide and graphene in our invention could reduce the dosage of strong acid as well as heat release of chemical reaction, and cause less corrosion to our equipments, which makes the reaction more effective and properties of graphene products better, facilitating the achievement of large scale industrial production.
    • 本发明涉及一种基于混合酸体系的氧化石墨烯的制备方法。 该方法由以下步骤组成。 一个。 石墨粉的制备; b。 第一酸系悬浮液的制备; C。 第二酸系的制备; d。 氧化石墨烯的制备。 本发明还涉及使用上述方法获得的使用石墨烯氧化物的石墨烯的制备方法。 该方法由以下步骤组成。 e。 石墨烯氧化物分散剂溶液的制备; F。 还原石墨烯氧化物; G。 超音速剥离工艺 H。 通过分离和干燥获得石墨烯。 我们发明中的氧化石墨烯和石墨烯的制备方法可以降低强酸的用量和化学反应的放热,对设备的腐蚀较少,使反应更有效,石墨烯产品的性能更好,便于 实现大规模工业化生产。
    • 115. 发明申请
    • MATERIAL COMPRISING REDUCED GRAPHENE OXIDE, A DEVICE COMPRISING THE MATERIAL AND A METHOD OF PRODUCING THE MATERIAL
    • 包含减少的石墨烯氧化物的材料,包含材料的装置和生产材料的方法
    • US20160133361A1
    • 2016-05-12
    • US14890391
    • 2013-06-24
    • ABB TECHNOLOGY LTD
    • Emmanuel LOGAKISAlex SKORDOSPanagiota CHATZI
    • H01B17/58B32B9/00H01B3/18
    • H01B17/583B32B9/007B32B2250/40B32B2307/202C01B32/23H01B1/04H01B3/18Y10T428/30
    • The present invention relates to a material comprising reduced graphene oxide, wherein the degree of reduction of the graphene oxide exhibits a spatial variation so that the material exhibits a gradient in the electric conductivity and/or permittivity. The material can for example be used in an electric device for purposes of field grading and/or dissipation of charges. Examples of electric devices wherein the material is beneficial includes cable accessories, bushings, power cables, microelectronics, switchgear, etc. The invention further relates to a method of producing a material for electrical applications. The method comprises treating different parts of a graphene oxide element differently, so as to achieve a different degree of reduction of the graphene oxide within the element, resulting in a sample having a gradient in the electrical conductivity and/or permittivity. The material could for example be obtained by means of applying a thermal gradient to a graphene oxide element, or by irradiation of a graphene oxide element.
    • 本发明涉及一种包含还原石墨烯氧化物的材料,其中氧化石墨烯的还原程度呈现空间变化,使得该材料表现出电导率和/或介电常数的梯度。 该材料可以例如用于电气设备中以用于场分级和/或耗散的耗散。 该材料有益的电气设备的实例包括电缆附件,衬套,电力电缆,微电子学,开关设备等。本发明还涉及一种生产用于电气应用的材料的方法。 该方法包括不同地处理石墨烯氧化物元件的不同部分,以便实现元件内氧化石墨烯的不同程度的降低,导致具有导电性和/或介电常数梯度的样品。 该材料可以例如通过向氧化石墨烯元素施加热梯度,或通过氧化石墨烯氧化物元素的照射来获得。
    • 117. 发明申请
    • Method of exfoliating and functionalizing graphite anode
    • 剥离和功能化石墨阳极的方法
    • US20160097133A1
    • 2016-04-07
    • US14504442
    • 2014-10-02
    • Chung-Ping LAI
    • Chung-Ping LAI
    • C25B3/02
    • C25B3/02C01B32/23C25B1/00
    • A. providing an electrochemical cell with a first graphitic electrode and a second conductive electrode, wherein the first graphitic electrode is made of any one of HOPG, natural graphite, and synthetic graphite, the first graphitic electrode is held at a most positive potential, and the second conductive electrode is conductive, wherein a current passes through the electrochemical cell; B. providing an electrolyte of a solvent in the electrochemical cell, wherein the electrolyte has specific oxygen containing salts and base. Thereby, the graphitic electrode is functionalized and exfoliated by applying a voltage between the two electrodes thus producing graphene oxide.
    • A.提供具有第一石墨电极和第二导电电极的电化学电池,其中所述第一石墨电极由HOPG,天然石墨和合成石墨中的任一种制成,所述第一石墨电极保持在最正电位,并且 所述第二导电电极是导电的,其中电流通过所述电化学电池; B.在电化学电池中提供溶剂的电解质,其中电解质具有特定的含氧盐和碱。 由此,石墨电极通过在两个电极之间施加电压而被功能化和剥离,从而产生氧化石墨烯。