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Synthesis and electrical property of tin double oxides with tunnel framework

Research Project

Project/Area Number 10450237
Research Category

Grant-in-Aid for Scientific Research (B).

Allocation TypeSingle-year Grants
Section一般
Research Field Inorganic materials/Physical properties
Research InstitutionTohoku University

Principal Investigator

ENDO Tadashi  Graduate school of Engineering, Tohoku University, Professor, 大学院・工学研究科, 教授 (30176797)

Co-Investigator(Kenkyū-buntansha) UHEDA Kyota  Graduate school of Engineering, Tohoku University, Assistant, 大学院・工学研究科, 助手 (50271862)
TAKIZAWA Hirotsugu  Graduate school of Engineering, Tohoku University, Assistant Professor, 大学院・工学研究科, 助教授 (90226960)
Project Period (FY) 1998 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥15,800,000 (Direct Cost: ¥15,800,000)
Fiscal Year 2000: ¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1999: ¥4,800,000 (Direct Cost: ¥4,800,000)
Fiscal Year 1998: ¥9,000,000 (Direct Cost: ¥9,000,000)
KeywordsIon conductor / Tin double oxide / Tin oxide / Microporous materials / Hollandite / Tunnel structure / Layered structure / Crystal growth / 針状結晶 / カリウム / フラックス / スズ / トンネル型構造 / ホーランダイト型構造 / 層状化合物 / イオン伝導体 / スズ複酸化物 / インターカレーション反応 / ホーランダイト型化合物
Research Abstract

First, we have prepared new tin double oxides with open framework. C.Keller and A.R.West had reported Li_2MgSn_3O_8 with a ramsdellite structure. (J.Mater. Sci. Lett., 2 (1983) 451-452) The framework of Li_2MgSn_3O_8 is constructed by SnO_6 and MgO_6 Li^+ ions are located in 1×2 tunnel. We have tried to synthesize new tin double oxides with larger tunnels, for example 2×2 or 3×3, by using lager alkali ions, K^+, Rb^+, or Cs^+ instead of Li^+ ion. As a restult, we succeeded in preparing A_xMg_<x/2>Sn_<8-x/2>O_<16> (x≦2)(K, Rb and Cs) and K_xCa_<x/2>Sn_<8-x/2>O_<16> (x≦2) with a hollandite structure.
Both A_xMg_<x/2>Sn_<8-x/2>O_<16> (x≦2)(K, Rb and Cs) and K_xCa_<x/2>Sn_<8-x/2>O_<16> (x≦2) were expected that they would have excellent ion and electron conductivities. In order to investigate electrical properties of both compounds, we have studied the flux growth of their crystals. Polycrystalline K_xCa_<x/2>Sn_<8-x/2>O_<16> (x≦2) was obtained by using excess K_2CO_3 as flux. The polycrystal was made by tying fibrous single crystals of K_xCa_<x/2>Sn_<8-x/2>O_<16> (x≦2) in a bundle. Its size (mm_3) was 1.5 mm×0.2 mm×0.2 mm. After conductivity measurement, the conductivity of K_xCa_<x/2>Sn_<8-x/2>O_<16> (x≦2) was σ_<300>=2.2×10^<-9>Ω^<-1> m^<-1> at room temperature, and the activation energy was calculated to be 0.63eV.The result suggested that the chief charge carrier is potassium ion in 1D channels.
In conclusion, it is expected that both new hollandite tin double oxides, A_xMg_<x/2>Sn_<8-x/2>O_<16> (K, Rb, and Cs) and K_xCa_<x/2>Sn_<8-x/2>O_<16> (x≦2) will be applied to electrolytes, especially to

Report

(4 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • 1998 Annual Research Report
  • Research Products

    (16 results)

All Other

All Publications (16 results)

  • [Publications] 本多充: "ホーランド型構造をもつ新規化合物,K_xCa_<x/2>Sn_<8-x/2>O_<16>(x≦2)の合成と電気的性質"粉体および粉末冶金. 48(in press). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 岩崎将任: "28GHzマイクロ波を照射したスズの光学的性質"粉体および粉末冶金. 47. 999-1003 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Uheda: "Synthesis and Crystal Structure of Novel Hollandite Compounds A_xMg_<x/2>Sn_<8-x/2>O_<16>(A=K,Rb, and Cs)"Journal of Porous Materials. 6. 161-166 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Uheda: "Synthesis of new birnessite-type compound in K-Mg-Sn-O System"Journal of Materials Science Letters. 18. 377-379 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Mitsuru Honda: "Synthesis and Electrical Property of Novel Compound, K_xCa_<x/2>Sn_<8-x/2>O_<16> (X≦2) with Hollandite Structure"Journal of the Japan of Powder and Powder Metallurgy. 48 (in press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Iwasaki: "Optical Properties of Stannic Oxide Obtained by 28GHz Microwave Irradiation"Journal of the Japan of Powder and Powder Metallurgy. 47. 999-1003 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Uheda: "Synthesis and Crystal of Novel Hollandits Compounds A_xMg_<x/2>Sn_<8-x/2>O_<16> (A=K, Rb, and Cs)"Journal of Porous materials. 6. 161-166 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Uheda: "Synthesis of new birnessite-type compound in K-Mg-Sn-O System"Journal of Materials Science Letters. 18. 377-379 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 岩崎将任: "28GHzマイクロ波を照射したスズの光学的性質"Journal of the Japan of Powder and Powder Metallurgy. 47. 999-1003 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Uheda: "Synthesis and Crystal Structure of Novel Hollandite Compounds A_xMg_<x/2>Sn_<8-x/2>O_<16> (A=K, Rb, and Cs)"Journal of Porous Materials. 6. 161-166 (1999)

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Uheda: "Synthesis of new birnessite-type compound in K-Mg-Sn-O syntem"Jounal of Materials Science Letters. 18. 377-379 (1999)

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Uheda et al.: "Synthesis and Crystal Structure of Novel Hollandite Compounds AxMg_<X/2>Sn_<8-X/2>O_<16>(A=K,Rb,and Cs)"Journal of Porous Materials. 6. 161-165 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Uheda et al.: "Synthesis of a new birnessite-type compound in K-Mg-Sn-O-system"Journal of Materials Sciense Letters. 18. 377-379 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Uheda: "Synthesis and Crystal Structure of Novel Hollandite Compounds A_XMg_<X/2>Sn_<8-X/2>O_<16>(A=K,Rb,and Cs)" Journal of Porous Materials. 6. 161-166 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Uheda: "Synthesis of a New Birnessite-type Compound in K-Mg-Sn-O System" Journal of Materials Science Letters. (in press). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Uheda: "Fabrication and photochromism of Langmuir-Blodgett films composed of polyoxometalate anions and n-alkylamines" Transactions of MRS-J. 23(in press). (1999)

    • Related Report
      1998 Annual Research Report

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Published: 1998-04-01   Modified: 2016-04-21  

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