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Shinichi Nakatsuji

University of Hyogo, Japan

Title: Development of novel organic radical batteries

Biography

Biography: Shinichi Nakatsuji

Abstract

Rechargeable batteries are widely used not only in portable equipments like cell phones or personal computers but also as the energy sources of automobiles and among them lithium-ion battery (LIB) technology is currently considered to constitute a reliable system for electricity storage with high energy density and design flexibility. Along with the development of such inorganicbased rechargeable batteries as LIB, it is of growing interest to develop organic-based ones for the next generation to improve the battery-performances by possible flexibilities of organic materials from chemical and physical viewpoints. We have been interested in developing new organic radical batteries containing dual redox units, i. e., a nitroxide radical together with another redox group such as ferrocene, 1,4-benzoquinone, anthraquinone, naphthalenediimide, or disulfide to increase the charge storage capacities and to obtain unique charging-discharging properties. We wish to report in this paper some of our recent results in the development of novel organic radical batteries incorporating a nitroxide radical and another redox unit. The development of new dye salts with a radical unit will also be reported at the same time that are expected to show relevant redox and photosensitizing properties useful for dye-sensitizing solar cells (DSSCs).

Recent Publications

  1. Kao S -J, Kawahara Y, Nakatsuji S, Ho K -C (2015) Achieving a large contrast, low driving voltage, and high stability electrochromic device with a viologen chromophore. Journal of Materials Chemistry C 3:3266-3272.
  2. Fujikura K, Akutsu H, Yamada J, Nakatsuji S, Satoh M (2015) Structures and properties of diradical compounds containing disulfide and nitroxide groups. Synthetic Metals 208:17-20.
  3. Nakatsuji S, Fujiwara K, Akutsu H, Yamada J, Satoh M (2013) Structures and properties of ferrocene derivatives with different kinds of nitroxide radicals. New Journal of Chemistry 37:2468-2472.
  4. Suzuki S, Kawahara Y, Akutsu H, Yamada J, Nakatsuji S (2013) Structures of the reaction products of AZADO radical with TCNQF4. Beilstein Journal of Organic Chemistry 9:1487-1491.
  5. Nakatsuji S, Aoki K, Kojoh A, Akustu H, Yamada J, Karakawa M, Aso Y (2013) Self-Assembling Aryl-Naphthalendiimide Derivatives with a Nitroxide Radical. Asian Journal of Organic Chemistry 2:164-168.