• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Development of CO2 reduction technique by controlling the overpotential for hydrogen evolution at the a-C surface

Research Project

Project/Area Number 20H02845
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 36020:Energy-related chemistry
Research InstitutionYamaguchi University

Principal Investigator

Honda Kensuke  山口大学, 大学院創成科学研究科, 教授 (60334314)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥18,330,000 (Direct Cost: ¥14,100,000、Indirect Cost: ¥4,230,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2021: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥12,480,000 (Direct Cost: ¥9,600,000、Indirect Cost: ¥2,880,000)
Keywordsアモルファスカーボン / 二酸化炭素還元 / 電極触媒 / 光触媒 / 電気化学触媒
Outline of Research at the Start

二酸化炭素から燃料を合成する研究開発は、環境と資源・エネルギーの問題を同時に解決できる技術開発である。しかし、CO2からCOへの還元反応は、標準電位が-0.53V vs. NHEと、水素生成の標準電位(0V vs. NHE)より卑電位にあるため、水溶液中でCO2を電気化学的に還元、あるいは光触媒により還元することは困難である。このため、高活性(水素生成とCO2還元の分離)と高耐久性を併せ持つCO2還元電極の具現化には至っていない。本研究では、アモルファスカーボン表面を利用した新規な水素生成過電圧の制御手法により、CO2を高効率に還元可能で、安定性の高い触媒電極とCO2還元光触媒の開発を行う。

Outline of Final Research Achievements

Objective of this study is to realize electrocatalyst and photocatalysts for CO2 reduction with higher efficiency and higher durability.
Amorphous carbon was selected as electrode material because amorphous carbon shows the higher over potentials for H2 evolution and the extremely higher physical and chemical stability. Nitrogen atoms was selected as a dopant atom because the over potential for H2 evolution was highest using nitrogen. a-C electrocatalysts for CO2 reduction was successfully fabricated by introducing amino groups and carbonyl groups on the N-doped a-C surface as active sites for CO2 reduction. The current efficiency for CO2 reduction on the a-C electrocatalyst was extremely high and was 95%, and the CO2 reduction current was stable and the decrease rate after 6 hours was 7%.
It was summarized that a-C electrocatalysts for CO2 reduction with higher efficiency and higher durability was able to be realized.

Academic Significance and Societal Importance of the Research Achievements

電気化学および光電気化学的手法を用いてCO2をギ酸への変換を可能とする本研究の成果は、大気中のCO2濃度を低減可能であり、ギ酸を資源に利用可能なため、環境と資源・エネルギーの問題を同時に解決可能となる技術である。また、CO2からギ酸への還元反応は、標準電位が-0.61Vであり、水素生成反応の標準電位(0V)より卑電位側であるため、水溶液中で水素生成反応の阻害を受けずにCO2を還元することは困難である。本研究のa-Cを用いた水素生成反応の抑制制御と活性サイト賦与によるCO2還元触媒の具現化手法は、高活性と高耐久性を併せ持つCO2還元触媒を具現化する新たな手法であり、新たな触媒の設計指針となる。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (19 results)

All 2023 2022 2021 2020

All Journal Article (8 results) (of which Peer Reviewed: 5 results,  Open Access: 1 results) Presentation (10 results) (of which Int'l Joint Research: 5 results,  Invited: 1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] High-performance carbon-rich amorphous silicon carbon alloy semiconductors with low optical gaps2023

    • Author(s)
      Honda, Kensuke; Matsumoto, Akari; and Kondo, Bunta; Shimizu, Yuta
    • Journal Title

      Physica E: Low-Dimensional Systems and Nanostructures

      Volume: 148 Pages: 115652-115652

    • DOI

      10.1016/j.physe.2023.115652

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Electrochemical reduction of carbon dioxide in an aqueous solution using phosphorus-doped polycrystalline diamond electrodes2022

    • Author(s)
      Hiroshi Naragino, Yu Saitoh and Kensuke Honda
    • Journal Title

      Electrochemistry Communications

      Volume: 134 Pages: 107164-107164

    • DOI

      10.1016/j.elecom.2021.107164

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Electrochemical measurements using diamond electrodes and amorphous carbon electrodes2021

    • Author(s)
      本多 謙介
    • Journal Title

      Denki Kagaku

      Volume: 89 Issue: 2 Pages: 157-166

    • DOI

      10.5796/denkikagaku.21-TE0003

    • NAID

      130008049449

    • ISSN
      2433-3255, 2433-3263
    • Year and Date
      2021-06-05
    • Related Report
      2021 Annual Research Report
  • [Journal Article] Porous TiO2 adsorbed with squaraine dye as visible-light-responsive photocatalyst2021

    • Author(s)
      Yamazaki Suzuko、Sonoda Kotoe、Maruoka Kiyotaka、Yamazaki Yukari、Naragino Hiroshi、Honda Kensuke、Murafuji Toshihiro、Sumimoto Michinori
    • Journal Title

      Journal of Photochemistry and Photobiology A: Chemistry

      Volume: 421 Pages: 113543-113543

    • DOI

      10.1016/j.jphotochem.2021.113543

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 表面官能基を制御したアモルファスカーボンによる酸素還元触媒2021

    • Author(s)
      本多 謙介
    • Journal Title

      NEW DIAMOND

      Volume: 37 Pages: 25-27

    • NAID

      40022572022

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Fabrication of C-rich a-SiC Semiconductor Nanoparticles Having Variable Optical Gaps and Particle Sizes Using High-density Plasma in Localized Area2020

    • Author(s)
      Kensuke HONDA and Ryutaro KOBAYASHI,
    • Journal Title

      Electrochemistry

      Volume: 88 Issue: 5 Pages: 397-406

    • DOI

      10.5796/electrochemistry.20-64071

    • NAID

      130007896974

    • ISSN
      1344-3542, 2186-2451
    • Year and Date
      2020-09-05
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Visible light responsive TiO2 photocatalysts for degradation of indoor acetaldehyde2020

    • Author(s)
      Suzuko Yamazaki, Keisuke Kozasa, Kohsiro Okimura, Kensuke Honda
    • Journal Title

      RSC Advances

      Volume: 10 Issue: 68 Pages: 41393-41402

    • DOI

      10.1039/d0ra07567a

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Amorphous carbon having higher catalytic activity toward oxygen reduction reaction: Quinone and carboxy groups introduced onto its surface2020

    • Author(s)
      Kensuke Honda, Yuta Waki, Akari Matsumoto, Bunta Kondo, Yohsuke Shimai
    • Journal Title

      Diamond & Related Materials

      Volume: 107 Pages: 107900-107900

    • DOI

      10.1016/j.diamond.2020.107900

    • Related Report
      2020 Annual Research Report
  • [Presentation] 半導体ナノ粒子のプラズマ合成と水素生成光触媒への応用2022

    • Author(s)
      本多 謙介
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 水素発生過電圧コントロールと表面構造制御による高効率アモルファスカーボン二酸化炭素還元触媒の創製2022

    • Author(s)
      本多 謙介, 井上 智之
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 高効率多接合型太陽電池に向けてアモルファス構造を制御したSi添加アモルファスカーボン(a-SixC1-x)半導体薄膜の開発と合成手法の確立2022

    • Author(s)
      近藤 文太,本多 謙介
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Development of P-doped Si-added amorphous carbon semiconductor thin films by structural defect controlling at pn-junction interface for high-efficiency multi-junction solar cells2021

    • Author(s)
      Bunta Kondo, Kensuke Honda
    • Organizer
      Pacifichem 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development of atmospheric-pressure plasma reactor for fabrication of semiconductor nanoparticles with controllable particle size2021

    • Author(s)
      Hiroshi Naragino, Misato Ishikawa, Kensuke Honda
    • Organizer
      Pacifichem 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Electrochemical quantitation of sulfate ion in aqueous solution using peroxydisulfate ion generated by preelectrolysis2021

    • Author(s)
      Hiroshi Naragino, Yu Saito , Kensuke Honda,
    • Organizer
      Pacifichem 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development of high performance C-Rich a-SiC semiconductor having variable optical gap by control of its phase structure2021

    • Author(s)
      Kensuke Honda, Akari Matsumoto, Yukiko Makayama, Hiroshi Naragino
    • Organizer
      Pacifichem 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 高効率マルチ接合型太陽電池の実現に向けたキャリア密度および移動度の制御によるシリコン添加アモルファスカーボン薄膜の半導体特性の向上2021

    • Author(s)
      近藤 文太、楢木野 宏、本多 謙介
    • Organizer
      第68回応用物理春季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 大気圧ミストプラズマを用いた粒径制御可能な半導体ナノ粒子の 合成法の開発2021

    • Author(s)
      楢木野 宏、石川 美里、本多 謙介
    • Organizer
      第68回応用物理春季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Development of High Performance C-Rich a-SiC Semiconductors with Narrow-Optical Gap By Control of Its Phase Structure2020

    • Author(s)
      K. Honda, and A Matsumoto
    • Organizer
      Pacific Rim Meeting on Electrochemical and Solid-State Science (PRiME 2020)/238th ECS Meeting
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Patent(Industrial Property Rights)] 二酸化炭素還元触媒の製造方法2021

    • Inventor(s)
      本多 謙介
    • Industrial Property Rights Holder
      山口大学
    • Industrial Property Rights Type
      特許
    • Filing Date
      2021
    • Related Report
      2021 Annual Research Report

URL: 

Published: 2020-04-28   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi