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Tanaka Lab
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The lab studies energy materials, creating power generation and energy storage devices from inorganic materials.
AboutAbout the lab
Developing power generation and energy storage devices for the sustainable prosperity of humanity
The Tanaka Lab develops power generation and energy storage devices, such as fuel cells, secondary batteries, capacitors, and vibration energy harvesters, based on inorganic materials.
As concern about energy problems spreads, the adoption of clean, highly efficient power generation systems and highly reliable energy storage systems is desired.
By making use of the strengths of inorganic materials, which offer a wide variety of elements and processing methods, the lab aims to bring next-generation devices into the world.
The lab values both a logical approach to pursuing the truth and an approach of creating things with bold ideas.
Key terms
- Electret
- A material that retains static electricity semi-permanently. It is used in electrostatic vibration energy harvesting systems
- Solid oxide fuel cell (SOFC)
- A fuel cell that needs no precious metal catalyst, has high power generation efficiency, and allows a wide choice of fuels
- Apatite
- A compound known as the main component of bone. B-type carbonate apatite is composed only of light elements
ResearchResearch themes
Based on inorganic materials, the lab works on developing a wide range of power generation and energy storage devices, from fuel cells and secondary batteries to capacitors and vibration energy harvesters. The lab regards understanding and controlling surfaces and interfaces as an important issue in developing materials and devices.
*Illustrative imageDevices That Turn Ambient Vibration into Electric Power
Low-energy ambient vibration, which is constantly generated by the movement of people and vehicles, is converted into electric power by an electrostatic vibration energy harvesting system. The lab has newly developed a ceramic electret that stably maintains a high surface potential, aiming for a dramatic improvement in power density.
*Illustrative imageFuel Cell Catalysts That Use Less Platinum
In polymer electrolyte fuel cells (PEFCs), technologies are needed that raise the reaction rate while reducing the amount of rare and expensive platinum-based catalysts used. The lab aims to improve activity through the interaction between platinum and carbon, and to develop oxide-based catalysts that do not use platinum.
*Illustrative imageElectrolytes for Intermediate-Temperature Fuel Cells
The lab is developing electrolytes that contain no rare elements by using apatite-based compounds such as B-type carbonate apatite as the electrolyte of solid oxide fuel cells (SOFCs). It has succeeded in producing an electrolyte that shows a conductivity high enough for practical use at 600°C.
*Illustrative imageUnderstanding and Controlling Surfaces and Interfaces
The performance of materials and devices depends greatly on the state of surfaces and interfaces, both inside and outside the material. By designing and fabricating surfaces and interfaces involving inorganic materials, and measuring and controlling their states and functions, the lab aims to create innovative materials and devices.
MembersFaculty
- Associate ProfessorYumi Tanaka
- Assistant ProfessorShu Iwasaki
VoicesStudent voices
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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: “Mercedes-Benz eCitaro Fuel Cell, Busworld Europe 2023, Brussels (P1140116)” MB-one / CC BY-SA 4.0 (cropped)
- Devices That Turn Ambient Vibration into Electric Power: “Energy-harvesting-platform” Taojiang12345 / CC BY-SA 4.0 (cropped)
- Fuel Cell Catalysts That Use Less Platinum: “Platinum crystals” Periodictableru / CC BY 3.0 (cropped)
- Electrolytes for Intermediate-Temperature Fuel Cells: “Apatite crystal anisotropy 01” Masha Milshina / CC BY 4.0 (cropped)
- Understanding and Controlling Surfaces and Interfaces: “Activated Carbon” Ravedave (talk) / CC BY 2.5 (cropped)
- Related lab (永田研究室): “PV Accelerator Pilot Line 2” Tasmanet / CC BY-SA 3.0 (cropped)
- Related lab (髙島研究室): “Anatase (titania, TiO2) photocatalyst producing hydrogen” University College London Faculty of Mathematical & Physical Sciences / CC BY 3.0 (cropped)
- Related lab (庄野研究室): “CWRYBASF” William Grimes at English Wikipedia / Public domain (cropped)
- Related lab (酒井研究室): “Ana's Zeolite ( )” cobalt123 / CC BY-SA 2.0 (cropped)
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