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Department of Energy and Environment

Promoting green innovation

To promote green innovation, AIST is developing technologies for increased use of alternative energy technologies, such as renewable energy sources that reduce greenhouse gas emissions (energy creation), high-density storage of energy (energy storage), highly efficient conversion and use of energy (energy saving), effective utilization of energy resources, and evaluation and reduction of environmental risks.

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New Research Results

Control of Mesochannels in Graphene-Mesoporous Silica Nanocomposite

AIST developed a technique that makes it possible to control the diameter and depth of mesochannels oriented perpendicularly to the graphene surfaces in a sandwich-type graphene-mesoporous silica nanocomposite. The composite is formed by growing porous silica on both sides of a graphene sheet. The diameter and depth of the silica channels can be controlled. The nanocomposite is expected to be used in applications including molecular sieve sensing and drug delivery systems.

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Formation mechanism of graphene-mesoporous silica nanocomposite with mesochannels

World’s Highest Critical Current Density in Magnetic Field Realized by Low Cost High Temperature Superconducting Tape

AIST has developed yttrium-based oxide superconducting tapes that allow large critical current capacity in a strong magnetic field. AIST has improved the characteristics of the yttrium-based oxide superconducting tapes by fabricating ultra-fine artificial pinning centers (APCs) with uniform dispersion and high density using a chemical solution decomposition method which costs less than vapor phase methods. This has achieved a maximum critical current density of 4 mega-amperes that can flow while maintaining the superconducting state (at liquid nitrogen temperature, 65 K, per 1 cm2 in a magnetic field of 3T), and the critical current value exceeds 360 amperes.

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Schematic process-flow of the chemical solution deposition method


Research Unit


Open Innovation Laboratory

Since FY 2016, as a part of the “Open Innovation Arena concept” promoted by the Ministry of Economy, Trade and Industry (METI), AIST has created the concept of “open innovation laboratories” (OILs), collaborative research bases located on university campuses, and has been engaged in their provision. We are planning to establish more than ten OILs by FY 2020.

AIST will merge the basic research carried out at universities, etc. with AISTʼs goal-oriented basic research and applied technology development, and will promote bridging research and evelopment and industry by the establishment of OILs.


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