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Design of functional nanostructures with high electrochemical performance

Research Project

Project/Area Number 21K04149
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 21050:Electric and electronic materials-related
Research InstitutionKitami Institute of Technology

Principal Investigator

KIM KYUNG HO  北見工業大学, 工学部, 教授 (70608471)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsナノ構造体 / 水酸化物 / 酸化物 / エネルギー貯蔵デバイス / 複合酸化物 / 複合水酸化物 / 電気化学反応 / スーパーキャパシタ / ナノ材料 / 電極材料 / 省エネルギー
Outline of Research at the Start

本研究課題では、ウェットプロセスを用いた複合ナノ構造体のデザインとその電気化学的反応機構を解明し、エネルギー貯蔵デバイスの性能向上を目指す。
従来の均一核生成・成長のみ用いて得られた粉末状のナノ構造体の場合は、添加物を混合した後金属基板上にコーティングする方法を用いて電極材料として使用できる。しかし、添加物の不均一な分布や高抵抗による素子性能の低下が指摘される。
そこで、従来では困難であった均一核生成・成長と不均一核生成・成長を同時に用いた複合ナノ構造体を直接成長させ、そのサイズや形状が及ぼす電気伝導率、比表面積、熱・化学的安定性への影響と電気化学的反応機構との相関関係を明らかにする。

Outline of Final Research Achievements

Supercapacitors based on the Faradaic oxidation/reduction reactions of cost-effective transition metal (cobalt (Co), nickel (Ni), copper (Cu), etc.) oxides/hydroxides electrode materials are promising energy-storage devices because of their safety, cost-effectiveness, and eco-friendliness. In this research project, it has been designed new transition metal composite hydroxide (or oxide) nanostructures using simple and facile wet chemical solution deposition method, and investigated their electrochemical reaction mechanism. The morphology and crystalline phase of hierarchical composite hydroxide (or oxide) nanostructures could be easily tunable by controlling the solution conditions (molar ratios, surfactants, etc), growth temperature & time, and post-annealing treatment.

Academic Significance and Societal Importance of the Research Achievements

従来の成膜法により得られた粉末状のナノ構造体を用いた場合、ナノ構造体と添加物の混合比率に関する条件は確立されている一方、どのようなナノ構造体がスーパーキャパシタの電極材料として最適なのかはまだ知られていない。特に、不透明な添加物の使用はその応用展開を制限する。本研究では、添加物フリー複合ナノ構造体を基板上に直接成膜させることで、ナノ構造体の優れた電気化学的特性を要する分野への応用展開も可能である。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (12 results)

All 2024 2023 2022 2021

All Journal Article (6 results) (of which Peer Reviewed: 5 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Color-tunable nanosheet-structured nickel-cobalt hydroxide and oxide thin films2023

    • Author(s)
      Kyung Ho Kim, Kodai Numata, Yoshio Abe
    • Journal Title

      Journal of Electronic Materials

      Volume: 52 Issue: 7 Pages: 4935-4939

    • DOI

      10.1007/s11664-023-10458-y

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Growth of vertically aligned nanosheet-like structured nickel-cobalt hydroxide thin films and their electrochemical properties2023

    • Author(s)
      Kyung Ho Kim, Kodai Numata
    • Journal Title

      Applied Physics A

      Volume: 129 Issue: 9

    • DOI

      10.1007/s00339-023-06888-4

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Structural and Morphological Properties of Nanosheet-like Structured Cobalt Hydroxide Films with Annealing Treatment2022

    • Author(s)
      Kodai Numata, Yoshio Abe, Kyung Ho Kim
    • Journal Title

      Proceedings of the International Display Workshops

      Volume: 29 Pages: 967

    • DOI

      10.36463/idw.2022.0967

    • ISSN
      1883-2490
    • Year and Date
      2022-12-15
    • Related Report
      2022 Research-status Report
    • Open Access
  • [Journal Article] Color modulation of electrochromic nanosheet-structured nickel-cobalt oxide thin films2022

    • Author(s)
      Kyung Ho Kim, Misaki Morohoshi, Yoshio Abe
    • Journal Title

      Applied Physics A

      Volume: 128 Issue: 6

    • DOI

      10.1007/s00339-022-05657-z

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Morphological evolution of electrochromic nanosheet-structured nickel-cobalt oxide thin films2022

    • Author(s)
      Kyung Ho Kim, Kodai Numata, Misaki Morohoshi, Yoshio Abe
    • Journal Title

      Materials Letters

      Volume: 329 Pages: 133192-133192

    • DOI

      10.1016/j.matlet.2022.133192

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Electrochromic characteristics of porous nanosheet-structured nickel oxide films with cobalt and zinc dopants2021

    • Author(s)
      Kyung Ho Kim, Yuya Ishita, Yoshio Abe
    • Journal Title

      Materials Letters

      Volume: 305 Pages: 130755-130755

    • DOI

      10.1016/j.matlet.2021.130755

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] 溶液堆積法で成膜したニッケルーコバルト酸化薄膜における電気化学的特性の膜厚依存性2024

    • Author(s)
      沼田晃大、金 敬鎬
    • Organizer
      電気化学会第91回大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Electrochemical performance of nanosheet-like structured nickel-cobalt oxide thin films2024

    • Author(s)
      Kodai Numata, Kyung Ho KIm
    • Organizer
      International Display Workshops
    • Related Report
      2023 Annual Research Report
  • [Presentation] Facile preparation of sphere-like structured copper oxide by a simple solution process2024

    • Author(s)
      Keisuke Washo, Kodai Numata, Kyung Ho Kim
    • Organizer
      International Display Workshops
    • Related Report
      2023 Annual Research Report
  • [Presentation] ニッケルーコバルト酸化物ナノ構造体の電気化学特性に及ぼす熱処理の影響2023

    • Author(s)
      沼田晃大、金 敬鎬、阿部良夫
    • Organizer
      電気化学会第90回大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Structural and morphological properties of nanosheet-like structured cobalt hydroxide films with annealing treatment2022

    • Author(s)
      Kodai Numata, Yoshio Abe, Kyung Ho Kim
    • Organizer
      The 29th International Display Workshops
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 酸化物ナノシート構造体の成膜とそのエレクトロミック特性評価2021

    • Author(s)
      諸星 美咲、金 敬鎬、阿部 良夫
    • Organizer
      電気化学会
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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