Molecular orientation and proton transport of polymers at the electrode and active material interfaces

• Project Area: HYDROGENOMICS: Creation of Innovative Materials, Devices, and Reaction Processes using Higher-Order Hydrogen Functions
• Project/Area Number: 21H00020
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: Japan Advanced Institute of Science and Technology
• Principal Investigator: 長尾 祐樹 北陸先端科学技術大学院大学, 先端科学技術研究科, 教授 (20431520)
• Project Period (FY): 2021-04-01 – 2023-03-31
• Project Status: Completed (Fiscal Year 2022)
• Budget Amount: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000); Fiscal Year 2022: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000); Fiscal Year 2021: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
• Keywords: 電極触媒界面 / 界面イオン輸送 / 分子配向性 / 高分子電解質 / 固体プロトン電池 / 全固体電池

Outline of Research at the Start

高分子は柔軟さや自己修復性が付与可能なため、将来的には折り曲げ可能な固体電池の開発が期待されている。この実現には、高分子電解質に対する電極および活物質の界面設計が欠かせない。
本提案では、これまでの研究代表者の高分子特有の主鎖や官能基の分子配向等の構造変化によるプロトン伝導性の相関研究の実績を活かし(Langmuir, 33, 12547 (2017), 高分子論文集, 75, 576 (2018), Sci. Tech. Adv. Mater., 21, 79 (2020))、未解明な電極や活物質界面におけるプロトン伝導性高分子のプロトン輸送を分子配向の観点から明らかにすることを目的とする。

Outline of Annual Research Achievements

イオン伝導性高分子薄膜の炭素電極に沿った面内イオン伝導度は、インピーダンス法で直接観測できないことが先行研究で指摘されていた。先行研究と同条件で櫛形電極をリソグラフィ技術で作製しプロトン伝導度を測定し、プロトン伝導度は櫛形電極の間に存在する石英基板上のNafion薄膜のプロトン伝導度であり、炭素電極パッド上のNafion薄膜のプロトン伝導度は観測できていないことを明らかにした。この結果から、結論が相反する二報の先行研究の内容を整理した。種々の追加検討を行った結果、炭素電極パッドとNafion薄膜界面の電気二重層キャパシタンスを変化させることで、炭素電極パッド上のNafion薄膜のプロトン伝導度に帰属可能なインピーダンス成分を観測できることが見いだされた。この知見をもとに、炭素電極上のイオン伝導性高分子薄膜の面内イオン伝導度を決定する手法を確立し、目的を達成した。
確立した手法を炭素電極上のNafion薄膜に用いると、298K、相対湿度96%でのプロトン伝導度は、20-30 mS cm-1と比較的高く、過去に研究代表者らが報告した石英上のNafion薄膜と比較して約2倍、島状白金上のNafion薄膜と同等のプロトン伝導度を有することも明らかにした。
また、炭素電極界面のイオン伝導性高分子薄膜における分子配向の同定法を確立することもできた。ベンチマーク材料であるNafion薄膜は炭素電極界面でシリコン基板上と同様の分子配向を有していた。乾燥状態のNafionの主鎖は面内方向に配向し、側鎖末端のスルホン酸基同士はダイマーもしくはオリゴマー化していると考えられた。
共同研究体制は、前年度得られた結果をもとに、界面イオン輸送で著名なカルガリー大のKaran教授の研究グループとの共同研究を継続した。
関連する論文発表は6件（うち国際共著3件）、学会発表は17件（うち招待講演は1件）実施した。

Research Progress Status

令和4年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和4年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] カルガリー大学(カナダ)
• [Int'l Joint Research] Shahjalal Univ. of Sci. and Tech.(バングラデシュ)
• [Int'l Joint Research] Thammasat University/Nat. Elec. and Comp. Tech. Center(タイ)
• [Int'l Joint Research] National Taipei University of Technology(その他の国・地域)
• [Int'l Joint Research] Universiti Malaysia Pahang/Centre for Ionics University of Malaya(マレーシア)
• [Int'l Joint Research] Chinese Academy of Sciences/Jilin Normal University/Shanghai University of Eng. Sci.(中国)
• [Int'l Joint Research] Shahjalal Univ. of Sci. and Tech./Bangladesh Academy of Sciences(バングラデシュ)
• [Int'l Joint Research] Chulalongkorn University(タイ)
• [Journal Article] Lyotropic Liquid Crystalline Property and Organized Structure in High Proton-Conductive Sulfonated Semi-Alicyclic Oligoimide Thin Films (2023)
  • Author(s): Y. Yao, H. Watanabe, M. Hara, S. Nagano, Y. Nagao
  • Journal Title: ACS Omega Volume: 8 Issue: 8 Pages: 7470-7478
  • DOI: 10.1021/acsomega.2c06398
  • Peer Reviewed / Open Access
• [Journal Article] Palladium nanoparticles combined with reduced graphene oxide and multiwall carbon nanotubes for alkaline ascorbic acid oxidation (2023)
  • Author(s): Hasan Md. Mahmudul、Li Zhongping、Nagao Yuki
  • Journal Title: Japanese Journal of Applied Physics Volume: 62 Issue: 2 Pages: 027003-027003
  • DOI: 10.35848/1347-4065/acb897
  • Peer Reviewed / Open Access
• [Journal Article] Facile Fabrication Of Oxygen-enriched MXene Based Sensor And Their Ammonia Gas-sensing Enhancement (2023)
  • Author(s): L. C. T. Cao, M-H. Zhou, P. Opaprakasit, P. Sreearunothai, Y. Nagao, S. Boonruang, H. Fallah, S-F. Tseng, S. H. Hsu
  • Journal Title: Adv. Mater. Interfaces Volume: -
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Hydration and OH-/Br- Conduction Properties of Fluorene-Thiophene-Based Anion Exchange Thin Films Tethered with Different Cations (2022)
  • Author(s): F. Wang, S. Nagano, M. Hara, Y. Nagao
  • Journal Title: ACS Appl. Polym. Mater. Volume: 4 Issue: 8 Pages: 5965-5974
  • DOI: 10.1021/acsapm.2c00811
  • Peer Reviewed / Open Access
• [Journal Article] Attribution of H+ Transportation of Nafion-Film on Different Substrates Using Planar Inter-Digitated Electrodes (2022)
  • Author(s): Bhardwaj Rahul、Karan Kunal、Nagao Yuki
  • Journal Title: ECS Transactions Volume: 109 Issue: 9 Pages: 303-316
  • DOI: 10.1149/10909.0303ecst
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Photocatalytic degradation of chlorazol yellow dye under sunlight irradiation using Ce, Bi, and N co-doped TiO2 photocatalyst in neutral medium (2022)
  • Author(s): Moushumy Zannatul Mumtarin、Hassan Mohammad Jobaer、Ahsan Mohebul、Hasan Md. Mahmudul、Uddin Md. Nizam、Nagao Yuki、Hasnat Mohammad A.
  • Journal Title: Environmental Science and Pollution Research Volume: 30 Issue: 12 Pages: 35153-35169
  • DOI: 10.1007/s11356-022-24220-0
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Interfacial and Internal Proton Conduction of Weak-acid Functionalized Styrene-based Copolymer with Various Carboxylic Acid Concentrations (2021)
  • Author(s): SUWANSOONTORN Athchaya、YAMAMOTO Katsuhiro、NAGANO Shusaku、MATSUI Jun、NAGAO Yuki
  • Journal Title: Electrochemistry Volume: 89 Issue: 5 Pages: 401-408
  • DOI: 10.5796/electrochemistry.21-00042
  • NAID: 130008084637
  • ISSN: 1344-3542, 2186-2451
  • Year and Date: 2021-09-05
  • Peer Reviewed / Open Access
• [Journal Article] OH^- Conductive Properties and Water Uptake of Anion Exchange Thin Films (2021)
  • Author(s): Wang Fangfang、Wang Dongjin、Nagao Yuki
  • Journal Title: ChemSusChem Volume: 14 Issue: 13 Pages: 2694-2697
  • DOI: 10.1002/cssc.202100711
  • Peer Reviewed / Open Access
• [Journal Article] Christmas‐Tree‐Shaped Palladium Nanostructures Decorated on Glassy Carbon Electrode for Ascorbic Acid Oxidation in Alkaline Condition (2021)
  • Author(s): Hasan Mahmudul、Nagao Yuki
  • Journal Title: ChemistrySelect Volume: 6 Issue: 24 Pages: 5885-5892
  • DOI: 10.1002/slct.202100974
  • Peer Reviewed / Open Access
• [Journal Article] Intrinsic proton conduction in 2D sulfonated covalent organic frameworks through a post-synthetic strategy (2021)
  • Author(s): Zhang Yuwei、Li Chunzhi、Liu Zhaohan、Yao Yuze、Hasan Md. Mahmudul、Liu Qianyu、Wan Jieqiong、Li Zhongping、Li He、Nagao Yuki
  • Journal Title: CrystEngComm Volume: 23 Issue: 36 Pages: 6234-6238
  • DOI: 10.1039/d1ce00957e
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Efficient sensing of hydrogen peroxide via electrocatalytic oxidation reactions using polycrystalline Au electrode modified with controlled thiol group immobilization (2021)
  • Author(s): Dutta Anim、Hasan Md. Mahmudul、Miah Md. Rezwan、Nagao Yuki、Hasnat Mohammad A.
  • Journal Title: Electrochimica Acta Volume: 395 Pages: 139217-139217
  • DOI: 10.1016/j.electacta.2021.139217
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Halide Replacement Effect on Proton Conductivity and Vapochromic Luminescence of Pt(II) Complexes (2021)
  • Author(s): Kobayashi Atsushi、Imada Shin-ichiro、Yao Yuze、Nagao Yuki、Kubota Yuto、Yoshida Masaki、Kato Masako
  • Journal Title: Bulletin of the Chemical Society of Japan Volume: 94 Issue: 10 Pages: 2466-2473
  • DOI: 10.1246/bcsj.20210279
  • NAID: 130008117264
  • Peer Reviewed / Open Access
• [Journal Article] Accumulation of Sulfonic Acid Groups Anchored in Covalent Organic Frameworks as an Intrinsic Proton‐Conducting Electrolyte (2021)
  • Author(s): Zhai Lipeng、Yao Yuze、Ma Baiwei、Hasan Md. Mahmudul、Han Yuxi、Mi Liwei、Nagao Yuki、Li Zhongping
  • Journal Title: Macromolecular Rapid Communications Volume: 43 Issue: 1 Pages: 2100590-2100590
  • DOI: 10.1002/marc.202100590
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] Investigation of carboxylic acid deprotonation in electrolyte thin film through protonic field-effect transistor (2023)
  • Author(s): A. Suwansoontorn, K. Aoki, J. Matsui, Y. Nagao
  • Organizer: 第70回応用物理学会 春季学術講演会
• [Presentation] リチウム置換したリオトロピック液晶性高分子電解質薄膜のイオン伝導度および構造 (2023)
  • Author(s): 生田聖也, 原光生, 青木健太郎, 前原日和, 長尾祐樹
  • Organizer: 日本化学会 第103春季年会(2023)
• [Presentation] リオトロピック液晶性高分子電解質における含有水分子の環境の評価 (2023)
  • Author(s): 犬飼裕也, 小野祐太朗, 青木健太郎, 長尾祐樹
  • Organizer: 日本化学会 第103春季年会(2023)
• [Presentation] プロトン拡散と紫外光照射で分解するアリールケイ素架橋型高分子材料の開発 (2023)
  • Author(s): 中川智稀, 正井宏, 青木健太郎, 長尾祐樹, 寺尾潤
  • Organizer: 日本化学会 第103春季年会(2023)
• [Presentation] Mobility of proton conduction in thin films using the electric field effect (2023)
  • Author(s): Y. Nagao, A. Suwansoontorn, K. Aoki, J. Matsui
  • Organizer: 日本化学会 第103春季年会(2023)
• [Presentation] OH- Conductivity and Water Uptake of Anion Exchange Thin Films Under Humidity Control (2022)
  • Author(s): Y. Nagao
  • Organizer: 241st ECS Meeting
  • Int'l Joint Research
• [Presentation] OH- Conductivity and Water Uptake of Anion Exchange Thin Films (2022)
  • Author(s): Y. Nagao, F. Wang, D. Wang
  • Organizer: 23rd International Conference on Solid State Ionics (SSI 23)
  • Int'l Joint Research
• [Presentation] INTERFACIAL H+/OH- TRANSPORT IN POLYMER ELECTROLYTE THIN FILMS (2022)
  • Author(s): Y. Nagao
  • Organizer: 7th Virtual International Conference on Functional Materials and Devices 2022 (ICFMD2022)
  • Int'l Joint Research / Invited
• [Presentation] Substrates Dependant Proton Conductivity in Nafion Thin-Film (2022)
  • Author(s): R. Bhardwaj, A. Suwansoontorn, I. Shitanda, Y. Nagao
  • Organizer: 7th Virtual International Conference on Functional Materials and Devices 2022 (ICFMD2022)
  • Int'l Joint Research
• [Presentation] 高分子電解質薄膜におけるプロトン伝導とアニオン伝導の類似点と相違点 (2022)
  • Author(s): Y. Nagao, F. Wang
  • Organizer: 第71回高分子討論会
• [Presentation] Hydration and Anion Conductive Properties of Fluorene-Thiophene-Based Anion Exchange Thin Films (2022)
  • Author(s): F. Wang, Y. Nagao, S. Nagano, M. Hara
  • Organizer: 第71回高分子討論会
• [Presentation] Protonic Field-Effect Transistors (H+-FETs) Measurement of Weak-acid Polymer Thin Film Through Electrochemical Impedance Spectroscopy (EIS),第83回応用物理学会秋季学術講演会,2022,2022,, (2022)
  • Author(s): A. Suwansoontorn, R. Bhardwaj, D. Hirose, Y. Takamura, Y. Nagao
  • Organizer: 第83回応用物理学会秋季学術講演会
• [Presentation] Influence of Reactant Gases on Ionomer’s Proton Conductivity on Quartz (2022)
  • Author(s): R. Bhardwaj, I. Shitanda, Y. Nagao
  • Organizer: 第84回応用物理学会秋季学術講演会
• [Presentation] Quantitative Analysis of H+ Transportation of Nafion-film on Different Substrate using Planar Inter-Digitated Electrodes (2022)
  • Author(s): R. Bhardwaj, A. Suwansoontorn, D. Hirose, Y. Takamura, M. Abbaszadehami, K. Karan, Y. Nagao
  • Organizer: 242nd ECS meeting
  • Int'l Joint Research
• [Presentation] リオトロピック液晶性高分子電解質における含水量の評価 (2022)
  • Author(s): 犬飼 裕也, Yuze Yao, 小野 祐太朗, Agman Gupta, Rahul Bhardwaj, 青木 健太郎, 長尾 祐樹
  • Organizer: 2022年度 北陸地区講演会と研究発表会
• [Presentation] Protonic field-effect transistor confirmed by EIS measurement of weak-acid polymer thin film (2022)
  • Author(s): A. Suwansoontorn, K. Aoki, J. Matsui, Y. Nagao
  • Organizer: 第48回 固体イオニクス討論会
• [Presentation] Analysis of Proton Transportation in Nafion Thin Film Over Fuel Cell Cathode Catalyst Substrates (2022)
  • Author(s): R. Bhardwaj, I. Shitanda, K. Karan, Y. Nagao
  • Organizer: 第48回 固体イオニクス討論会
• [Presentation] Bipolar plates with improved anti-corrosive properties and high conductivity for anion exchange membrane fuel cells (2022)
  • Author(s): S. Peng, R. Badam, Md. M. Hasan, N. Matsumi, Y. Nagao
  • Organizer: 電気化学会第89回大会
• [Presentation] Palladium Nanoparticles Decorated Reduced Graphene Oxide and Multiwall Carbon Nanotubes catalyst for Alkaline Ascorbic Acid Fuel Cell Application (2022)
  • Author(s): Md. M. Hasan, N. Endo, Y. Kakihana, M. Higa, Z. Li, Y. Nagao
  • Organizer: 電気化学会第89回大会
• [Presentation] Internal and interfacial proton transport of polymer thin film modulated by carboxylic acid functional group concentration (2022)
  • Author(s): A. Suwansoontorn, Y. Nagao, K. Yamamoto, S. Nagano, J. Matsui
  • Organizer: 電気化学会第89回大会
• [Presentation] アニオン交換薄膜における加湿制御下の水酸化物イオン伝導性の評価 (2022)
  • Author(s): Y. Nagao, F. Wang, D. Wang
  • Organizer: 電気化学会第89回大会
• [Presentation] The dependence of proton transport route on carboxylic acid density in polymer thin films (2022)
  • Author(s): A. Suwansoontorn, Y. Nagao, K. Yamamoto, S. Nagano, J. Matsui
  • Organizer: 第69回応用物理学会春季学術講演会
• [Presentation] 高分子ナノシート積層体層間が形成する高速プロトン輸送チャネルの構造解析 (2021)
  • Author(s): 井上 南, Liu Miaomiao, 長尾 祐樹, 源明 誠, 宮下 徳治, 三ツ石 方也, 松井 淳
  • Organizer: 第70回高分子学会年次大会
• [Presentation] PROGRESS ON HIGHLY PROTON-CONDUCTIVE POLYMER THIN FILMS WITH ORGANIZED STRUCTURE AND MOLECULARLY ORIENTED STRUCTURE (2021)
  • Author(s): Y. Nagao
  • Organizer: 4th International Conference on Science & Engineering of Materials (ICSEM-2021)
  • Int'l Joint Research / Invited
• [Presentation] Influence on hydrophilic side chains of sulfonated polyimide thin film on proton conductivity (2021)
  • Author(s): Y. Yao, M. Liu, H. Watanabe, M. Hara, S. Nagano, Y. Nagao
  • Organizer: The 3rd Symposium on Industrial Science and Technology (SISTEC 2021)
  • Int'l Joint Research
• [Presentation] Electrocatalytic oxidation of ascorbic acid by electroless deposition of silver dendrite nanostructure onto the glassy carbon electrode (2021)
  • Author(s): Md. M. Hasan, R. H. Rakib, M. A. Hasnat, Y. Nagao
  • Organizer: The 3rd Symposium on Industrial Science and Technology (SISTEC 2021)
  • Int'l Joint Research
• [Presentation] Relations of OH- Conductivity and Water Uptake of Anion Exchange Membrane in Thin Film Form (2021)
  • Author(s): F. Wang, D. Wang, Y. Nagao
  • Organizer: The 3rd Symposium on Industrial Science and Technology (SISTEC 2021)
  • Int'l Joint Research
• [Presentation] OH- Conduction and Hydration Properties of Anion Exchange Ionomer (2021)
  • Author(s): F. Wang, D. Wang, Y. Nagao
  • Organizer: 第70回高分子討論会
• [Presentation] プロトン伝導性液晶高分子を志向したアゾベンゼンメソゲン-アクリル酸共重合体の液晶構造 (2021)
  • Author(s): K. Hirata, K. Suetsugu, F. Wang, Y. Nagao, T. Seki, S. Nagano
  • Organizer: 第70回高分子討論会
• [Presentation] Proton conductive mechanism at the interlayer of polymer nanosheet film (2021)
  • Author(s): M. Inoue, M. Liu, Y. Nagao, M. Gemmei, T. Miyashita, M. Mitsuishi, J. Matsui
  • Organizer: 第70回高分子討論会
• [Presentation] 高プロトン伝導性スルホン化ポリイミド薄膜における半脂環式主鎖と組織構造の検討 (2021)
  • Author(s): 長尾祐樹, 髙倉健作, 小野祐太朗, 末次輝太, 原光生, 永野修作
  • Organizer: 第82回応用物理学会秋季学術講演会
• [Presentation] オリゴオキシエチレン側鎖を有するスルホン化ポリイミド薄膜におけるリオトロピック液晶性とプロトン伝導 (2021)
  • Author(s): 姚禹澤, LIU Miaomiao, 渡邉隼人, 原光生, 永野修作, 長尾祐樹
  • Organizer: ２０２１年日本液晶学会討論会
• [Presentation] サーモトロピック液晶性とプロトン伝導性を両立するアゾベンゼン高分子の調製と光配向 (2021)
  • Author(s): 平田和也, WANG Fangfang, 長尾祐樹, 関隆広, 永野修作
  • Organizer: ２０２１年日本液晶学会討論会
• [Presentation] High Proton Conductivity in Organized Polymer Structure (2021)
  • Author(s): Y. Nagao, M. Hara, S. Nagano
  • Organizer: Solid State Proton Conductors (SSPC-20)
  • Int'l Joint Research
• [Presentation] Relations of OH- Conductivity and Water Uptake of Anion Exchange Ionomer (2021)
  • Author(s): F. Wang, D. Wang, Y. Nagao
  • Organizer: Solid State Proton Conductors (SSPC-20)
  • Int'l Joint Research
• [Presentation] 分子配向と高分子組織化を基盤とした高イオン伝導材料の開発 (2021)
  • Author(s): 長尾祐樹
  • Organizer: 21-2水素・燃料電池材料研究会
• [Presentation] Hierarchical Metal Nanostructures: Synthesis, Characterizations, and Electrocatalysis (2021)
  • Author(s): Md. M. Hasan, Y. Nagao
  • Organizer: Nanotechnology Malaysia Annual Symposium (NANOSYM 2021)
  • Int'l Joint Research
• [Presentation] Highly proton-conductive polymer thin films with organized structure and molecularly oriented structure (2021)
  • Author(s): Y. Nagao
  • Organizer: 34th International Microprocesses and Nanotechnology Conference (MNC 2021)
  • Int'l Joint Research / Invited
• [Presentation] OH- Conductivity and Water Uptake of Anion Exchange Ionomer (2021)
  • Author(s): F. Wang, D. Wang, Y. Nagao
  • Organizer: 34th International Microprocesses and Nanotechnology Conference (MNC 2021)
  • Int'l Joint Research
• [Presentation] Lyotropic liquid crystal property and organized structure in sulfonated polyimide thin films with oligooxyethylene side chains (2021)
  • Author(s): Y. Yao, M. Liu, H. Watanabe, M. Hara, S. Nagano, Y. Nagao
  • Organizer: 34th International Microprocesses and Nanotechnology Conference (MNC 2021)
  • Int'l Joint Research
• [Presentation] Proton conductive side-chain liquid crystalline polymer system and photoalignment (2021)
  • Author(s): K. Hirata, W. Fangfang, Y. Nagao, T. Seki, S. Nagano
  • Organizer: 34th International Microprocesses and Nanotechnology Conference (MNC 2021)
  • Int'l Joint Research
• [Presentation] The influence of functionalized carboxylic acid on proton transport pathways in styrene-based polymer thin films (2021)
  • Author(s): A. Suwansoontorn, Y. Nagao, K. Yamamoto, S. Nagano, J. Matsui
  • Organizer: 2021年度 北陸地区講演会と研究発表会
• [Presentation] Hierarchical palladium nanostructures for ascorbic acid electrooxidation in alkaline condition (2021)
  • Author(s): Md. M. Hasan, Y. Nagao
  • Organizer: 2021年度 北陸地区講演会と研究発表会
• [Presentation] The weak-acid concentration dependence of proton conduction pathways in styrene-based polymer thin films (2021)
  • Author(s): A. Suwansoontorn, Y. Nagao, K. Yamamoto, S. Nagano, J. Matsui
  • Organizer: 第70回高分子学会北陸支部 研究発表会
• [Presentation] Interfacial Proton Conductivity and Structure in Polymer Electrolyte Thin Films (2021)
  • Author(s): Y. Nagao
  • Organizer: Material Research Meeting 2021 (MRM2021)
  • Int'l Joint Research
• [Presentation] Study on nickel deposited bipolar plate for anion exchange membrane fuel cells (2021)
  • Author(s): S. Peng, R. Badam, Md. M. Hasan, N. Matsumi, Y. Nagao
  • Organizer: Material Research Meeting 2021 (MRM2021)
  • Int'l Joint Research
• [Presentation] Highly conductive bipolar plates with enhanced anti-corrosive property for anion exchange membrane fuel cells (2021)
  • Author(s): S. Peng, R. Badam, Md. M. Hasan, N. Matsumi, Y. Nagao
  • Organizer: 第21回 日本表面真空学会中部支部学術講演会
• [Presentation] Proton conduction route of carboxylic acid functionalized polymer thin films (2021)
  • Author(s): A. Suwansoontorn, Y. Nagao, K. Yamamoto, S. Nagano, J. Matsui
  • Organizer: 第21回 日本表面真空学会中部支部学術講演会
• [Remarks] 長尾准教授らの論文が国際学術誌ChemSusChem誌のThe Cover Featureに採択
  • URL: https://www.jaist.ac.jp/whatsnew/info/2021/06/22.html
• [Remarks] 次世代燃料電池のアニオン交換薄膜において水酸化物イオン伝導度の評価法を確立
  • URL: https://www.jaist.ac.jp/whatsnew/press/2021/05/07-1.html
• [Remarks] 英国王立化学会（RSC）刊行のCrystEngCommでHot Articlesに選出
  • URL: https://www.jaist.ac.jp/whatsnew/award/2021/11/04-1.html
• [Remarks] 高分子薄膜における水素イオンの界面輸送で新知見
  • URL: https://www.jaist.ac.jp/whatsnew/press/2021/05/28-1.html
• [Remarks] Macromolecular Rapid Communications誌の表紙に採択
  • URL: https://www.jaist.ac.jp/whatsnew/info/2022/01/12-1.html
• [Patent(Industrial Property Rights)] 固体高分子形燃料電池用セパレータ及びその製造方法 (2021)
  • Inventor(s): 長尾 祐樹, ホ シリ
  • Industrial Property Rights Holder: 北陸先端科学技術大学院大学
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 2021-193188
  • Filing Date: 2021