Privious Issue

Volume 44 Number 3 (2013.9)

Special Feature

Energy Conversion and Storage

Part I. Special Feature



  • 2. Fabrication of Cu2ZnSnS4 Thin Film Solar Cells by SulfurizationPDF(2,817kB)

    pages 1-18
    Tatsuo Fukano, Hiroshi Nozaki, Shin Tajima, Tadayoshi Ito, Akihiro Nagoya and Ryoji Asahi

    Substitution of the Zn site by Cu [(Cu@Zn)] constituted the dominant acceptor site in Cu2ZnSnS4 (CZTS). Further, solar cell performance strongly depended on the amount of (Cu@Zn). The CZTS thin films were formed by reaction Cu2SnS3 + ZnS·Cu2ZnSnS4. We succeeded in improving the conversion efficiency of the CZTS solar cells.

Research Reports

  • 3. Density Functional Theory Calculations on Interfacial ElectrochemistryPDF(4,101kB)

    pages 19-35
    Ryosuke Jinnouchi, Kensaku Kodama, Eishiro Toyoda and Yu Morimoto

    Recent developments and applications of density functional theory combined with a modified Poisson-Boltzmann theory (DFT-MPB) are reviewed. After describing interfacial models and basic equations, results of applications are presented on surface phase diagrams, electrosorption valency values, activation free energies, transfer coefficients, IR-absorption spectroscopy and X-ray absorption spectroscopy.

  • 4. Electrochemical Performance of an All-solid-state Lithium Ion Battery Using Garnet-type Oxide ElectrolytesPDF(873kB)

    pages 37-43
    Shingo Ohta, Tetsuro Kobayashi and Takahiko Asaoka

    The lithium ion conductivity of garnet-type oxide as a solid electrolyte for all-solid-state lithium ion batteries was successfully improved by optimization of the composition and crystal structure. The electrochemical performance of the battery using garnet-type oxide was evaluated. The charge and discharge capacity is approximately 90% of the theoretical capacity and the interfacial resistance between cathode and garnet-type oxide was comparable to that for a lithium ion battery with a liquid organic electrolyte.

  • 5. Solvent Screening and Capacity Enhancement of Li-air Battery with Radical ReactionsPDF(714kB)

    Kensuke Takechi, Shougo Higashi and Tohru Shiga

    Oxygen radical control has very important roles in Li-air battery and its development. We have proposed facile and effective method to explore the electrolyte in the battery using a radical generator. An extremely high capacity battery using a radical trapping approach, a Li-O2/CO2 battery, has also been developed.

Part II. Highlighted Paper


  • 6. Formation of Inorganic–organic Nanohybrids through Self-assembly of Perylene Bisimide DerivativesPDF(1,679kB)

    pages 55-61
    Norihiro Mizoshita, Takao Tani and Shinji Inagaki

    Various types of nanostructured organic–silica hybrid materials have been prepared through columnar self-assembly of perylene bisimide (PBI) derivatives. The formation of columnar liquid-crystalline phases comprising alkoxysilane components enabled long-range orientation of the resulting PBI–silica hybrid films. Surfactant-directed polycondensation of PBI-based alkoxysilanes resulted in a new class of molecularly ordered periodic mesoporous organosilicas.

Research Reports