Carbon-based Energy Carrier Research Team

CO2-free fuel and CO2 recycling
Developing a Hydrogen Carrier System for CO2 Utilization

We are engaged in the research and development of energy (hydrogen) storage technologies based on interconversion between CO2 and formic acid/methanol, for CO2 utilization.

Carbon-based Energy Carrier Research Team

Research themes

  • Development of highly efficient catalysts that enable formic acid/methanol to be produced through carbon dioxide reduction (i.e., hydrogenation, electro-reduction), and that allow hydrogen to be produced from formic acid
  • Investigation into technologies for producing high-pressure hydrogen from formic acid

Concept for social contributions and implementation

Establishment of a hydrogen transport, storage and usage method using formic acid/methanol.

Research Team Leader / Greetings

Prime Senior Researcher (Leader, Carbon-based Energy Carrier Research Team)

HIMEDA Yuichiro

Facilities and infrastructure are crucial for the implementation of energy carrier technology using formic acid/methanol. We need the help of many different industrial partners in our research going forward. We believe that these collaborations will provide new technologies for generating high-pressure hydrogen from formic acid, and for supplying it to fuel cell vehicles (FCVs).

HIMEDA Yuichiro


Planning Officer, Research Planning Office of Zero Emission (Carbon-based Energy Carrier Research Team)








AIST Postdoctoral Researcher

MAJI Babulal

Technical Staff


Technical Staff


Technical Staff


The aims in this team are development of highly efficient catalysts for interconversion between CO2 and formic acid/methanol (i.e., hydrogenation, electro-reduction, and dehydrogenation) and the high-pressure reaction process.

Production of Formic Acid and methanol by Reduction of CO2

The catalyst that we have developed showed the highest performance for CO2 reduction (hydrogenation, electro-reduction) to formic acid and methanol. These catalysts can convert CO2 with high energy efficiency under mild reaction conditions.

High-Pressure H2 Production from Formic Acid

The high-performance catalysts which can supply high-pressure (> 1000 atm) and CO-free H2 by heating (<100 oC) of formic acid was developed. In addition, gas-liquid phase separation can easily separate of CO2 from the high-pressure system. The high-pressure H2 production from formic acid is original AIST’s technology.


Toda, H.; Kuroki, K.; Kanega, R.; Yano, T.; Yoshikawa, T.; Kuriyama, S.; Himeda, Y.; Sakata, K.; Nishibayasi, Y., Catalytic Ammonia Oxidation Using Ammonia Solution under Electrochemical Conditions: Investigation on Axial Ligand of Ruthenium Catalysts, Bull. Chem. Soc. Jpn. 2023, 96, 980-988

Published AUG 10 2023

Patra, S.; Maji, B.; Kawanami, H.; Himeda, Y., High-pressure hydrogen generation from dehydrogenation of formic acid, RSC Sustain. 2023, 1, 1655-1671

Published AUG 10 2023

Liu, X.; Dong, W.-Z.; Liu, Y.; Shao, W.-Y.; Li, Y.; Yu, X.; Himeda, Y.; Wang, W.-H.; Bao, M., Efficient Synthesis of Benzimidazole and Quinoline Derivatives Catalyzed by Functionalized Amidato Ruthenium Complexes in Water via Acceptorless Dehydrogenative Coupling Strategy, ChemCatChem 2023, 15, e202300817

Published JUL 10 2023

Liu, X.; Dong, W.-Z.; Li, Y.; Yu, X.; Wang, W.-H.; Himeda, Y.; Bao, M., Efficient β-alkylation of secondary alcohols to α-substituted ketones catalyzed by functionalized Ir complexes via borrowing hydrogen in water, Org. Chem. Front. 2023, 10, 355-362

Published NOV 22 2022