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Preparation of Ruthenic Acid Nanosheets and Utilization of Its Interlayer Surface for Electrochemical Energy Storage

Authors

  • Wataru Sugimoto Dr.,

    1. Department of Fine Materials Engineering, Faculty of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan, Fax: (+81) 268-22-9048
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  • Hideki Iwata,

    1. Department of Fine Materials Engineering, Faculty of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan, Fax: (+81) 268-22-9048
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  • Yutaka Yasunaga,

    1. Department of Fine Materials Engineering, Faculty of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan, Fax: (+81) 268-22-9048
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  • Yasushi Murakami Dr.,

    1. Department of Fine Materials Engineering, Faculty of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan, Fax: (+81) 268-22-9048
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  • Yoshio Takasu Prof. Dr.

    1. Department of Fine Materials Engineering, Faculty of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan, Fax: (+81) 268-22-9048
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  • This work was partially funded by a NEDO Industrial Technology Research Grant Program and a MEXT 21st Century COE Program.

Abstract

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A layered compound composed of crystalline ruthenic acid sheets interleaved with layers of water can be exfoliated (delaminated) to yield colloidal nanosheets. This material is a mixed conductor where the crystalline nanosheets contribute to the electron conductivity and the hydrous interlayer supplies proton transport (see diagram). A large active surface area and a high specific capacitance is promising for electrochemical supercapacitor applications.

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