Development of mass production process of graphene and fabrication of high strenght nanocomposites

• Project/Area Number: 15H05504
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Materials/Mechanics of materials
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: Arao Yoshihiko 東京工業大学, 物質理工学院, 助教 (40449335)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥23,530,000 (Direct Cost: ¥18,100,000、Indirect Cost: ¥5,430,000); Fiscal Year 2017: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000); Fiscal Year 2016: ¥10,010,000 (Direct Cost: ¥7,700,000、Indirect Cost: ¥2,310,000); Fiscal Year 2015: ¥10,270,000 (Direct Cost: ¥7,900,000、Indirect Cost: ¥2,370,000)
• Keywords: グラフェン / 剥離 / ナノコンポジット / 分散 / 材料加工・処理 / ナノカーボン / 複合材料 / ナノ粒子 / ナノ材料 / 装置開発 / 解砕

Outline of Final Research Achievements

Liquid phase exfoliation that enables to produce few-layer graphene from graphite has been developed in order to improve the quality and yield of graphene. It was demonstrated that the pressure homogenizer produced few-layer graphene more than ten times compared to conventional sonication method. We have found the optimal solvent system. The cosolvent of organic solvent and alkali water was the most proper solvent in liquid phase exfoliation due to its enhanced steric and electrical repulsion forces. In addition, we can successfully modify the structure of graphite. The modified graphite can be dissolved in water and alcohol those of which are believed as incompatible solvent against graphite.

Research Products

• [Journal Article] Efficient solvent systems for improving productivity of few-layer graphene in liquid phase exfoliation (2017)
  • Author(s): Yoshihiko Arao, Fumiya Mori, Masatoshi Kubouchi
  • Journal Title: Carbon Volume: 118 Pages: 18-24
  • Peer Reviewed
• [Journal Article] Efficient solvent systems for improving production of few-layer graphene in liquid phase exfoliation (2017)
  • Author(s): Yoshihiko Arao, Fumiya Mori, Masatoshi Kubouchi
  • Journal Title: Carbon Volume: 118 Pages: 18-24
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Mass production of high-aspect-ration few-layer-graphene by high-speed laminar flow (2016)
  • Author(s): Yoshihiko Arao, Yoshinori Mizuno, Kunihiro Araki, Masatoshi Kubouchi
  • Journal Title: Carbon Volume: 102 Pages: 330-338
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] High-rate production of few-layer graphene by high-power probe sonication (2015)
  • Author(s): Yoshihiko Arao
  • Journal Title: Carbon Volume: 95 Pages: 802-808
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] 銀担持グラフェンを用いて作製した透明導電膜の電気特性評価 (2017)
  • Author(s): 大場圭介，坂口大輝，荒尾与史彦，細井厚志，川田宏之
  • Organizer: 日本機械学会 2017年度年次大会
• [Presentation] グラフェンを効率的に剥離・分散させるための溶媒の検討 (2017)
  • Author(s): 荒尾与史彦，森 文也，久保内昌敏
  • Organizer: 平成29年度日本材料科学会学術講演大会
• [Presentation] 黒鉛の液相剥離によるグラフェンの生産技術とその応用展開 (2017)
  • Author(s): 荒尾与史彦，久保内昌敏, 坂口大輝, 細井厚志, 川田宏之
  • Organizer: 成形加工'17
• [Presentation] 液相におけるメカのケミカル反応を利用した高分散性ナノシートの作製 (2017)
  • Author(s): 荒尾与史彦，森文也，久保内昌敏
  • Organizer: 第44回炭素材料学会年会
• [Presentation] グラフェン作製に対する原料黒鉛構造の影響 (2017)
  • Author(s): 森文也，久保内昌敏，荒尾与史彦
  • Organizer: 第44回炭素材料学会年会
• [Presentation] グラフェン/エポキシナノコンポジットにおける溶媒分散法の検討 (2016)
  • Author(s): 鴨下 椋祐，荒尾与史彦，久保内昌敏
  • Organizer: 日本機械学会第24回機械材料・材料加工技術講演会（M&P2016）
  • Place of Presentation: 早稲田大学
  • Year and Date: 2016-11-25
• [Presentation] グラフェン/エポキシナノコンポジットにおけるドライプロセスを利用した機能性分散剤の検討 (2016)
  • Author(s): 鴨下椋祐, 荒尾与史彦，久保内昌敏
  • Organizer: 日本材料科学会，第23回材料科学若手研究者討論会
  • Place of Presentation: 東京工業大学
  • Year and Date: 2016-08-19
• [Presentation] エポキシ/グラフェン間の接着性向上によるコンポジットの高強度化 (2016)
  • Author(s): 鴨下椋祐，荒尾与史彦, 久保内昌敏
  • Organizer: 日本材料科学会 平成28年度・日本材料科学会学術講演大会
  • Place of Presentation: 産業技術総合研究所 臨海副都心センター
  • Year and Date: 2016-06-29
• [Presentation] グラフェン量産化のための化学装置に関する検討 (2015)
  • Author(s): 荒尾与史彦，久保内昌敏
  • Organizer: 日本機械学会
  • Place of Presentation: 東京工業大学
  • Year and Date: 2015-11-05
• [Presentation] Mass production of high aspect ratio few-layer graphene by high-speed laminar flow in liquid (2015)
  • Author(s): Yoshihiko Arao
  • Organizer: Mini-workshop on Nanocarbon composites:Processing, modelling, development
  • Place of Presentation: 東京大学
  • Year and Date: 2015-10-21
  • Int'l Joint Research
• [Remarks] 東京工業大学 久保内研究室
  • URL: http://www.chemeng.titech.ac.jp/~tklab/index-j.html
• [Remarks] 東京工業大学 T2R2 研究者情報
  • URL: http://t2r2.star.titech.ac.jp/cgi-bin/researcherpublicationlist.cgi?q_researcher_content_number=CTT100685284
• [Remarks]
  • URL: http://www.chemeng.titech.ac.jp/~tklab/index-j.html
• [Remarks]
  • URL: http://www.chemeng.titech.ac.jp/~tklab/index-j.html
• [Patent(Industrial Property Rights)] 無機粒子複合体およにその製造方法、並びに無機粒子複合体分散液 (2018)
  • Inventor(s): 荒尾与史彦、久保内昌敏
  • Industrial Property Rights Holder: 荒尾与史彦、久保内昌敏
  • Industrial Property Rights Type: 特許
  • Filing Date: 2018
• [Patent(Industrial Property Rights)] 高分散性ナノシートとその製造方法 (2017)
  • Inventor(s): 荒尾与史彦、久保内昌敏
  • Industrial Property Rights Holder: 荒尾与史彦、久保内昌敏
  • Industrial Property Rights Type: 特許
  • Filing Date: 2017
• [Patent(Industrial Property Rights)] 圧力式ホモジナイザを利用した高せん断付与による層状鉱物の剥離分散 (2015)
  • Inventor(s): 荒尾与史彦、久保内昌敏、水野義則
  • Industrial Property Rights Holder: 荒尾与史彦、久保内昌敏、水野義則
  • Industrial Property Rights Type: 特許
  • Filing Date: 2015-08-30