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Low-Environmental-Impact Energy Conversion Lab
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The lab develops catalysts based on inorganic nanomaterials for producing alcohols and ammonia.
AboutAbout the lab
Inorganic nanomaterials for a sustainable society
The Yamauchi Lab studies electrocatalysts and nanoalloy catalysts made from inorganic nanomaterials, with the aim of realizing a sustainable society.
The lab proposes a carbon-neutral energy cycle that circulates electricity from renewable energy through liquid fuels without emitting carbon dioxide, and develops catalysts for it.
The lab also uses in situ spectroscopy, which examines the state of a catalyst while a reaction is taking place, as a research method.
The results listed on the research page are those up to around 2018.
Key terms
- Electrocatalyst
- A substance that makes chemical reactions at an electrode surface proceed more easily
- Carbon-neutral energy cycle
- The lab's proposal to circulate electricity from renewable energy through liquid fuels without emitting CO2
- Nanoalloy
- A material in which multiple metals are mixed within a single nanometer-sized particle
- In situ spectroscopy
- A method that uses light to measure the state of a catalyst under actual reaction conditions such as temperature and pressure
ResearchResearch themes
The lab aims to use inorganic nanomaterials to create catalysts that efficiently convert between electrical energy and chemicals. It also conducts research that uses spectroscopy to examine how catalysts work during electrode reactions and thermocatalytic reactions.
*Illustrative imageAlcohol synthesis catalysts for electricity storage
The lab is searching for catalysts that use electricity to make alcohols from biomass-derived carboxylic acids. In studying catalysts for the reduction of oxalic acid, it found that only Ti and TiO2 show activity, and it succeeded in synthesizing glycolic acid with porous TiO2.
*Illustrative imageHighly selective oxidation with nanoalloy electrocatalysts
The lab is developing electrocatalysts that oxidize alcohols such as ethylene glycol with high selectivity and generate electricity without emitting carbon dioxide. It prepared iron-group nanometal catalysts by a new method and succeeded in generating power by using them as fuel cell electrodes.
*Illustrative imageContinuous synthesis cell for glycolic acid
The lab is developing a device that continuously produces glycolic acid from oxalic acid using only electricity. With a solid polymer-type electrolytic synthesis device that joins electrodes to a membrane through which the substrate passes, it succeeded in continuous production without adding impurities.
*Illustrative imageNanoalloy catalysts for ammonia synthesis
The lab makes catalysts for ammonia synthesis from nanoalloys of Ru mixed with iron. Ru has the drawback that its activity drops when hydrogen is abundant, but adding iron suppresses this, and the activity per unit area was about 2.5 times that of Ru.
MembersFaculty
- ProfessorMiho Yamauchi
- Associate ProfessorHirokazu Kobayashi
- Assistant ProfessorMasaki Donoshita
- Assistant ProfessorTomohiro Noguchi
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Electrocatalyst ANL” Argonne National Laboratory / CC BY-SA 2.0 (cropped)
- Alcohol synthesis catalysts for electricity storage: “Energy Vault Test Tower 2021” Caumasee / CC BY-SA 4.0 (cropped)
- Highly selective oxidation with nanoalloy electrocatalysts: “Iron(III)-oxide-sample” Benjah-bmm27 / Public domain (cropped)
- Continuous synthesis cell for glycolic acid: “Glycolic Acid” ECTran71 / CC BY-SA 4.0 (cropped)
- Nanoalloy catalysts for ammonia synthesis: “Ammonia-3D-vdW” Benjah-bmm27 / Public domain (cropped)
- Related lab (Water Electrolysis Cells and Hydrogen Storage Materials Lab): “Hydrogen Fuel Cell Conversion to Bench-scale Supercapacitor” D.S. Soriano / CC BY-SA 4.0 (cropped)
- Related lab (Strength of Metallic Micro- and Nanomaterials Lab): “Cu-Scheibe” Alchemist-hp (pse-mendelejew.de) / CC BY-SA 3.0 de (cropped)
- Related lab (Metallic Micro/Nano Materials Strength Lab (Toshiyuki Kondo)): “Thin film solar on standing seam metal roof” Architectsea / CC BY-SA 3.0 (cropped)
- Related lab (Hydrogen Mixture Thermophysical Properties Lab): “Hydrogen refueling” Ogidya / CC BY-SA 4.0 (cropped)
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