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METHOD FOR PRODUCING GRAPHENE, AND GRAPHENE PRODUCTION EQUIPMENT 新技術説明会

外国特許コード F200010272
整理番号 評18-0002KG
掲載日 2020年11月24日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2019JP045320
国際公開番号 WO 2020105646
国際出願日 令和元年11月19日(2019.11.19)
国際公開日 令和2年5月28日(2020.5.28)
優先権データ
  • 特願2018-218478 (2018.11.21) JP
発明の名称 (英語) METHOD FOR PRODUCING GRAPHENE, AND GRAPHENE PRODUCTION EQUIPMENT 新技術説明会
発明の概要(英語) Provided are: a method for producing graphene, the method including a stripping step for applying a voltage between a pair of electrodes 30, 32 in a state in which the pair of electrodes are disposed in an electrolyte solution 20 that includes water and at least one electrolyte selected from the group consisting of inorganic acids, inorganic salts, organic acids, and bases, and in which graphite 10 is disposed between the pair of electrodes without being in contact with the electrodes, whereby graphene is stripped from the graphite, and a recovery step for recovering the graphene generated by stripping from the graphite; and graphene production equipment for implementing the method.
従来技術、競合技術の概要(英語) BACKGROUND ART
Is composed of carbon atoms in the graphene sheet-like crystallized carbon, electrically conductive, thermal stability, toughness, and has excellent characteristics such as flexibility, the semiconductor device, solar cell, the transparent conductive film or the like in various fields are expected to be used.
As a practical production technique of graphene, graphite or graphene by delamination as the starting material is a top-down technique has attracted attention. In general, such as potassium permanganate and sulfuric acid and a strong oxidizing agent is concentrated sulfuric acid (strong acid) is used, graphite and chemically, graphene is manufactured, a large amount of reagent required for the particular attention to handling pure water for consumption, is demanded the development of new peeling method.
In recent years, graphite as an electrode in the electrolytic solution is energized, causing delamination of the graphite, graphene may be the electrochemical peeling method has attracted attention (for example, see Patent Document 1-7). For example, graphite as an anode using a low-concentration sulfuric acid at a relatively low voltage (for example 10V) is subjected to electrolysis, 1 peeled off within a short period of time that the graphite, graphene can be obtained.
On the other hand, N- (Bu4NBF4) methyl-2-pyrrolidone and tetrabutylammonium tetrafluoroborate (NMP) solution including an organic electrolyte, anode, cathode, and graphite powder was immersed in a high voltage is applied to 1100V after, 330000/s 1 in the high shear treatment of the method of obtaining graphene has been known (see Non-Patent Document 1).
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • KOGAKUIN UNIVERSITY
  • OKAYAMA UNIVERSITY
  • 発明者(英語)
  • HASHIMOTO, Hideki
  • ASOH, Hidetaka
  • NISHINA, Yuta
国際特許分類(IPC)
指定国 National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JO JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
参考情報 (研究プロジェクト等) http://www.ns.kogakuin.ac.jp/~wwb1027/
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