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Development of high-performance, safe and low-cost solid energy-storage capacitors

Research Project

Project/Area Number 20K20439
Project/Area Number (Other) 19H05515 (2019)
Research Category

Grant-in-Aid for Challenging Research (Pioneering)

Allocation TypeMulti-year Fund (2020)
Single-year Grants (2019)
Review Section Medium-sized Section 26:Materials engineering and related fields
Research InstitutionTokyo Institute of Technology

Principal Investigator

Tsurumi Takaaki  東京工業大学, 物質理工学院, 教授 (70188647)

Co-Investigator(Kenkyū-buntansha) 保科 拓也  東京工業大学, 物質理工学院, 准教授 (80509399)
安原 颯  東京工業大学, 物質理工学院, 助教 (20880032)
武田 博明  東京工業大学, 物質理工学院, 准教授 (00324971)
Project Period (FY) 2019-06-28 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥26,000,000 (Direct Cost: ¥20,000,000、Indirect Cost: ¥6,000,000)
Fiscal Year 2022: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2021: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2020: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2019: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Keywords固体イオンキャパシタ / 蓄電 / 固体電解質 / エネルギー密度 / キャパシタ / 蓄電素子 / リチウムイオン伝導体 / 蓄電キャパシタ / 地球温暖化
Outline of Research at the Start

異常気象をもたらす地球温暖化を抑制するためのキーデバイスは高性能蓄電装置である。電池に比べキャパシタは、蓄積されるエネルギーが物質量で決まらない、エネルギー変換を必要としないなどの利点がある。本研究では、固体中のイオンの長距離移動を分極発現機構とする固体イオンキャパシタを開発する。固体電解質にはリチウム含有酸化物ガラス、電極にはカーボンコートアルミニウムを使用し、両者の積層一体化は急速昇温焼結法により行う。電極界面に保護層をいれることで高電圧化を図り、最終的にリチウムイオン電池のエネルギー密度(100Wh/kg)に匹敵する固体キャパシタのプロトタイプを作る。

Outline of Final Research Achievements

This research was carried out with the aim of creating a new energy storage capacitors that are safe without degradation. The developed capacitor is an electric double layer capacitor that uses a solid electrolyte. By introducing a special nanostructure into the electrolyte, it is possible to apply a high voltage and improve the energy density. In order to experimentally verify the principle of this HV Solid Ionic Capacitor, Li-type and Na-type samples were prepared and their charge-discharge characteristics were measured. As a result, it was confirmed that the energy density was improved by high-voltage driving by introducing nanostructures. Furthermore, when the energy density was calculated with respect to the size of the nanostructures, the introduction of nanostructures of about 300 nm resulted in performance exceeding that of lithium batteries.

Academic Significance and Societal Importance of the Research Achievements

地球温暖化の抑制には優れた蓄電装置の開発が必須である。キャパシタは電気エネルギーを変換せず蓄えるので、劣化・発火の問題がない理想的な蓄電素子であるが、現状の電気二重層キャパシタは、液体電解質の電気分解のためエネルギー密度に上限がある。本研究で開発したHV固体イオンキャパシタは、特殊なナノ構造を導入した固体電解質を用いた電気二重層キャパシタである。ナノ構造により高電圧駆動が可能になりエネルギー密度が向上することが実験的に検証されている。エネルギー密度はナノ構造の微細化でさらに向上が可能である。このキャパシタは日本の素材産業でしか作れないので、実用化に成功すれば日本経済の復活に大きく貢献する。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Annual Research Report
  • Research Products

    (10 results)

All 2023 2022 2021 2019

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (7 results) (of which Int'l Joint Research: 3 results,  Invited: 3 results)

  • [Journal Article] Conductivity of Li-ion with a corundum-related structure in a LiNbO<sub>3</sub>–Al<sub>2</sub>O<sub>3</sub> system2022

    • Author(s)
      Tomiyama Naohiro、Yasuhara Sou、Tsurumi Takaaki、Hoshina Takuya
    • Journal Title

      Journal of the Ceramic Society of Japan

      Volume: 130 Issue: 7 Pages: 448-451

    • DOI

      10.2109/jcersj2.21182

    • ISSN
      1348-6535, 1882-0743
    • Year and Date
      2022-07-01
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Suppression Mechanisms of the Solid-Electrolyte Interface Formation at the Triple-Phase Interfaces in Thin-Film Li-Ion Batteries2021

    • Author(s)
      Yasuhara Sou、Yasui Shintaro、Teranishi Takashi、Sakata Osami、Hoshina Takuya、Tsurumi Takaaki、Majima Yutaka、Itoh Mitsuru
    • Journal Title

      ACS Applied Materials &amp; Interfaces

      Volume: 13 Issue: 29 Pages: 34027-34032

    • DOI

      10.1021/acsami.1c05090

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A surface-supporting method for an anode material of Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub> via an epitaxial thin film approach2021

    • Author(s)
      Yasuhara Sou、Yasui Shintaro、Teranishi Takashi、Hoshina Takuya、Tsurumi Takaaki、Itoh Mitsuru
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 60 Issue: SF Pages: SFFB11-SFFB11

    • DOI

      10.35848/1347-4065/ac15a8

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] セラミックス屋からみた電池とキャパシター固体HVスーパーキャパシタの可能性ー2023

    • Author(s)
      鶴見 敬章
    • Organizer
      日本セラミックス協会2023年年会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 表面担持したLiCoO2薄膜における担持材料の比誘電率と高速充電の関係2021

    • Author(s)
      安原 颯
    • Organizer
      第39回強誘電体会議
    • Related Report
      2021 Research-status Report
  • [Presentation] Ca(Mn,Nb)O3下部電極を使用したBaTiO3エピタキシャル薄膜の強誘電性評価2021

    • Author(s)
      安原 颯
    • Organizer
      第31回MRS-J年次大会
    • Related Report
      2021 Research-status Report
  • [Presentation] リラクサー誘電体の高温での高耐圧メカニズム2019

    • Author(s)
      鶴見敬章
    • Organizer
      第36回強誘電体応用会議
    • Related Report
      2019 Annual Research Report
  • [Presentation] Why some relaxors show high breakdown strength at high temperatures - intrinsic breakdown and lattice dynamics2019

    • Author(s)
      Takaaki Tsurumi
    • Organizer
      ISAF-ICE-EMF-IWPM-PFM2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] New Trends of Ceramic Capacitor Technology2019

    • Author(s)
      Takaaki Tsurumi
    • Organizer
      8th International Seminar on Green Energy Conversion
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] High energy density all solid capacitor with Lithium-ion conductive glass2019

    • Author(s)
      Yusuke Ikuta
    • Organizer
      The 13th Pacific Rim Conference of Ceramic Societies
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research

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Published: 2019-07-04   Modified: 2024-03-26  

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