Development of high-performance redox capacitor electrode consisting of MXene nanosheets

• Project/Area Number: 15H03873
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Inorganic industrial materials
• Research Institution: The University of Tokyo
• Principal Investigator: Okubo Masashi 東京大学, 大学院工学系研究科(工学部), 准教授 (20453673)
• Project Period (FY): 2015-04-01 – 2019-03-31
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥14,820,000 (Direct Cost: ¥11,400,000、Indirect Cost: ¥3,420,000); Fiscal Year 2017: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000); Fiscal Year 2016: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2015: ¥8,320,000 (Direct Cost: ¥6,400,000、Indirect Cost: ¥1,920,000)
• Keywords: 蓄電デバイス / リチウムイオン電池 / ナトリウムイオン電池 / キャパシタ / 層状化合物 / ナノシート / インターカレーション / 二次電池

Outline of Final Research Achievements

This project aims to develop high-performance redox capacitor electrodes consisting of MXene nanosheets. From 2015 to 2017, we have evaluated the electrochemical properties of MXene electrodes with various aqueous/nonaqueous electrolytes. Notably, we discovered that Ti2CTx MXene gives a large capacitance/capacity in nonaqueous Li+ and Na+ electrolytes, leading to realizing Li-ion/Na-ion hybrid capacitors with high energy density. The balanced high energy and high power densities of MXene capacitors successfully achieved the target performance of this project.

Academic Significance and Societal Importance of the Research Achievements

省エネルギー・低炭素社会を実現する上で、高性能蓄電デバイスの開発は必要不可欠です。本研究開発は、高速で充電と放電が可能な蓄電デバイスであるキャパシタに着目し、キャパシタ内で蓄電する電極材料の高性能化に取り組みました。その結果、層状のナノシート化合物（総称：マキシン）が、非常に優れた電極特性を示し、また、マキシンを用いて作成したキャパシタが高速で駆動可能であることを実証しました。本研究の成果は、新しい物質群をキャパシタ材料として初めて定量的に評価し、その特性を明らかにした点に意義があります。

Research Products

• [Journal Article] MXene as a Charge Storage Host (2018)
  • Author(s): Okubo Masashi、Sugahara Akira、Kajiyama Satoshi、Yamada Atsuo
  • Journal Title: Accounts of Chemical Research Volume: 51 Issue: 3 Pages: 591-599
  • DOI: 10.1021/acs.accounts.7b00481
  • Peer Reviewed
• [Journal Article] Enhanced Li-Ion Accessibility in MXene Titanium Carbide by Steric Chloride Termination (2017)
  • Author(s): Satoshi Kajiyama, Lucie Szabova, Hiroki Iinuma, Akira Sugahara, Kazuma Gotoh, Keitaro Sodeyama, Yoshitaka Tateyama, Masashi Okubo, Atsuo Yamada
  • Journal Title: Advanced Energy Materials Volume: - Issue: 9 Pages: 1601873-1601873
  • DOI: 10.1002/aenm.201601873
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Sodium-Ion Intercalation Mechanism in MXene Nanosheets (2016)
  • Author(s): Satoshi Kajiyama, Lucie Szabova, Keitaro Sodeyama, Hiroki Iinuma, Ryohei Morita, Kazuma Gotoh, Yoshitaka Tateyama, Masashi Okubo, and Atsuo Yamada
  • Journal Title: ACS Nano Volume: 10 Issue: 3 Pages: 3334-3341
  • DOI: 10.1021/acsnano.5b06958
  • Peer Reviewed
• [Journal Article] Pseudocapacitance of MXene Nanosheets for High-Power Sodium-Ion Hybrid Capacitors (2015)
  • Author(s): X. Wang, S. Kajiyama, H. Iinuma, E. Hosono, S. Oro, I. Moriguchi, M. Okubo, A. Yamada
  • Journal Title: Nature Communications Volume: 6 Issue: 1 Pages: 6544-6544
  • DOI: 10.1038/ncomms7544
  • NAID: 120006987112
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Presentation] 層状化合物MXene Ti2Cのリチウムイオン電池負極への応用 (2017)
  • Author(s): 大久保將史, 梶山智司,飯沼広基, 菅原哲, Lucie Szabova, 袖山慶太郎, 館山佳尚, 山田淳夫
  • Organizer: 電気化学会第84回大会
  • Place of Presentation: 東京、首都大学東京
  • Year and Date: 2017-03-25
• [Presentation] Enhanced Li-Ion Accessibility in MXene Titanium Carbide by Steric Chloride Termination (2017)
  • Author(s): Masashi Okubo, Satoshi Kajiyama, Lucie Szabova, Hiroki Iinuma, Akira Sugahara, Keitaro Sodeyama, Yoshitaka Tateyama, Atsuo Yamada
  • Organizer: International Battery Association 2017
  • Place of Presentation: Nara Kasugano International Forum, Nara, Japan
  • Year and Date: 2017-03-07
  • Int'l Joint Research
• [Presentation] 層状化合物MXene Ti_3 C_2 T_x を用いたナトリウムイオン電池負極におけるカルボキシメチルセルロースバインダーの効果 (2017)
  • Author(s): 菅原哲, 梶山智司, 飯沼広基, 大久保將史, 山田淳夫
  • Organizer: 第58回電池討論会
• [Presentation] Two-Dimensional MXene for Nonaqueous Hybrid Supercapacitors (2017)
  • Author(s): Masashi Okubo, Satoshi Kajiyama, Hiroki Iinuma, Akira Sugahara, Lucie Szabova, Keitaro Sodeyama, Yoshitaka Tateyama, Atsuo Yamada
  • Organizer: 21st International Conference on Solid State Ionics (SSI-21)
  • Int'l Joint Research
• [Presentation] 層状化合物MXeneの電極応用 (2017)
  • Author(s): 大久保將史, 山田淳夫
  • Organizer: 第101回新電池構想部会
  • Invited
• [Presentation] 層状化合物MXene Ti2Cを用いたリチウムイオン電池負極の特性 (2016)
  • Author(s): 大久保將史, 梶山智司, 飯沼広基, 菅原哲, Lucie Szabova, 袖山慶太郎, 館山佳尚, 山田淳夫
  • Organizer: 第57回電池討論会
  • Place of Presentation: 千葉、幕張メッセ
  • Year and Date: 2016-11-29
• [Presentation] Mxene: Novel Negative Electrode Materials for Sodium-Ion Batteries (2016)
  • Author(s): Masashi Okubo, Xianfen Wang, Satoshi Kajiyama, Hiroki Iinuma, E. Hosono, S. Oro, I. Moriguchi, Atsuo Yamada
  • Organizer: 18th International Meeting on Lithium Batteries
  • Place of Presentation: Chicago, US
  • Year and Date: 2016-06-20
  • Int'l Joint Research
• [Presentation] Development of MXene nanosheets for negative electrode materials of sodium-ion battery (2016)
  • Author(s): Masashi Okubo
  • Organizer: 40th International Conference and Exposition on Advanced Ceramics and Compsites
  • Place of Presentation: Florida, USA
  • Year and Date: 2016-01-25
  • Int'l Joint Research / Invited
• [Presentation] Solid State 23Na NMR study on reaction mechanism of MXene Ti3C2Tx in non-aqueous Na+ electrolyte (2015)
  • Author(s): Satoshi Kajiyama, Hiroki Iinuma, Ryohei Morita, Kazuma Gotoh, Masashi Okubo, Atsuo Ymada
  • Organizer: Pacifichem2015
  • Place of Presentation: Honolulu, USA
  • Year and Date: 2015-12-17
  • Int'l Joint Research
• [Presentation] Pseudocapacitance of MXene Ti2CTx nanosheets for high power sodium-ion hybrid capacitors (2015)
  • Author(s): Masashi Okubo, Satoshi Kajiyama, Xianfen Wang, Hiroki Iinuma, Atsuo Yamada
  • Organizer: Pacifichem2015
  • Place of Presentation: Honolulu, USA
  • Year and Date: 2015-12-16
  • Int'l Joint Research
• [Presentation] Reaction mechanism of electrochemical ion intercalation into MXene nanosheets (2015)
  • Author(s): Hiroki Iinuma, Satoshi Kajiyama, Ryohei Morita, Kazuma Gotoh, Masashi Okubo, Atsuo Ymada
  • Organizer: Pacifichem2015
  • Place of Presentation: Honolulu, USA
  • Year and Date: 2015-12-16
  • Int'l Joint Research
• [Presentation] 層状化合物MXene Ti3C2Tx のナトリウム電池用負極材料への応用 (2015)
  • Author(s): 梶山智司，Lucie Szabova, 袖山慶太郎, 飯沼広基，森田凌平，後藤和馬，館山佳尚，大久保將史，山田淳夫
  • Organizer: 電池討論会
  • Place of Presentation: 愛知県名古屋市産業労働センター
  • Year and Date: 2015-11-12
• [Presentation] Flexible MXene Nanosheets: Negative Electrode Materials for Lithium-Ion and Sodium-Ion Batteries (2015)
  • Author(s): Masashi Okubo, Satoshi Kajiyama, Xianfen Wang, Hiroki Iinuma, Ryohei Morita, Kazuma Gotoh, Atsuo Yamada
  • Organizer: 66th Annual Meeting of the International Society of Electrochemistry
  • Place of Presentation: Taipei, Taiwan
  • Year and Date: 2015-10-06
  • Int'l Joint Research
• [Presentation] ナノシート化合物MXene Ti3C2Txの有機電解液中におけるLi脱挿入反応機構の解析 (2015)
  • Author(s): 梶山智司，飯沼広基，森田凌平，後藤和馬，大久保將史，山田淳夫
  • Organizer: 電気化学会秋季大会
  • Place of Presentation: 埼玉県深谷市埼玉工業大学
  • Year and Date: 2015-09-12
• [Presentation] Sodium-ion hybrid capacitor with Alluaudite cathode and Mxene anode (2015)
  • Author(s): Atsuo Yamada, Masashi Okubo
  • Organizer: IUPAC-2015
  • Place of Presentation: Busan, Korea
  • Year and Date: 2015-08-11
  • Int'l Joint Research / Invited
• [Presentation] MXene Nanosheets for Negative Electrode Materials of Sodium-Ion Batteries (2015)
  • Author(s): Masashi Okubo
  • Organizer: Lithium Battery Discussions
  • Place of Presentation: Bordeaux, France
  • Year and Date: 2015-06-24
  • Int'l Joint Research
• [Presentation] Electrochemical Properties for MXene Ti3C2Tx as Negative Electrode in a Non-Aqueous Sodium-Ion Electrolyte (2015)
  • Author(s): Satoshi Kajiyama, Hiroki Iinuma, Masashi Okubo and Atsuo Yamada
  • Organizer: Solid State Ionics
  • Place of Presentation: Keystone, USA
  • Year and Date: 2015-06-18
  • Int'l Joint Research
• [Presentation] 導電性ナノシートMXene Ti3C2のLi+およびNa+非水電解液中における電極反応メカニズム比較 (2015)
  • Author(s): 飯沼広基, 梶山智司, 森田凌平, 後藤和馬, 大久保將史, 山田淳夫
  • Organizer: 化学電池材料研究会
  • Place of Presentation: 東京都千代田区日本化学会会館
  • Year and Date: 2015-06-16
• [Patent(Industrial Property Rights)] 層状化合物を含む電気化学キャパシタ用電極材料の製造方法 (2015)
  • Inventor(s): 大久保將史、山田淳夫、梶山智司、飯沼広基
  • Industrial Property Rights Holder: 大久保將史、山田淳夫、梶山智司、飯沼広基
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 2015-204553
  • Filing Date: 2015-10-16