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Low Temperature Synthesis of Metal Oxide Bronze Phases and their Electric Properties

Research Project

Project/Area Number 06453118
Research Category

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

Allocation TypeSingle-year Grants
Research Field 無機工業化学
Research InstitutionUniversity of Tokyo

Principal Investigator

KUDO Tetsuichi  Institute of Industrial Science, University of Tokyo, Professor, 生産技術研究所, 教授 (90205097)

Co-Investigator(Kenkyū-buntansha) HIBINO Mitsuhiro  Institute of Industrial Science, University of Tokyo, Research Associate, 生産技術研究所, 助手 (20270910)
Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥6,800,000 (Direct Cost: ¥6,800,000)
Fiscal Year 1995: ¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 1994: ¥3,800,000 (Direct Cost: ¥3,800,000)
KeywordsPeroxo-polytungsitc acid / Potassium tungsten bronze / Reduction heating / Superlattice structure / Bond percolation / Lead tungsten bronze / Barium tungsten bronze / Rietveld method / セシウムタングステンブロンズ / パイロクロア相 / 六方晶相 / 水蒸気センサ
Research Abstract

(1). We have found that potassium hexagonal tungsten bronze (K-HTB) synthesized from potassium peroxo-polytungstate at low temperature (500゚C) shows a remarkable increase in resistivity in a humidid atmosphere at room temperature. The mechanism of the resistivith increase by incorporation of water was investigated by gravimetry, complex impedance spectroscopy, and powder XRD measurement. The powder XRD profiles indicated that superlattice structure of the K-HTB emerges by incorporation of water. A layr structure model of the K-HTB was suggested from these results.
(2). An amorphous salt was precipitated by reacting barium bromide with a solution of peroxo-polytangstic acidl. Heating it in a hydrogen stream at temperature near 550゚C yielded a hexagonal form of barium tungsten bronze, Ba_xWO_3, in a pure aphase with x being in the range 0.19-0.24. At temperature higher than 620゚C,this metastable compound was transformed into the tetragonal bronze phase. An unreported lead tungsten bronze in the hexagonal form (a=7.408, c=3.786 A,for Pb_<0.29>WO_3) was synthesized similarly but at lower temperature (420゚C). Their crystal structures were refined by the Rietveld method. The electric properties of the compounds were also investigated between 4.2K to room temperature..

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (32 results)

All Other

All Publications (32 results)

  • [Publications] Y.M.Li et al.: "Coloration dynamics of tungsten oxide based all solid state electrochromic device" Electrochimica ACTA. 5. 807-812 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] K.Hinokuma et al.: "Coloration dynamics of spin-coated MoO_3・ nH_2O electrochromic films fabricated from peroxo-polymolybdate solution" J. Electrochem. Soc.4. 876-879 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] S.Takano et al.: "Electrochromic thim films coated from peroxo-polymolybdotungstate solution" Solid State Ionics. 70/71. 636-641 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] J.Oi et al.: "Hexagonal and pyrochlore-type cesium tungstates synthesized from cesium peroxo-polytungstate and their intercalation chemistry" Solid State Ionics. 72. 204-208 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Sone et al.: "Amorphous tantalum oxide proton conductor derived from peroxo-polyacid and its application for EC device" Solid State Ionics. 70/71. 316-320 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] I.Tsuyumoto et al.: "Humidity sensor using potassium tungsten bronze synthesized from peroxo-polytungstic acid" Solid State Ionic Materials. 387-392 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.M.Li et al.: "Electrochromic properties of spin-coated thin films from peroxo-polymolybdovanadate solutions" J. Electrochem. Soc.142. 1194-1199 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] M.Hibino et al.: "Preparation and lithium intercalation of a new-vanadium oxide with a two-dimensional structure" Solid State Ionics. 79. 239-244 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] M.Ugaji et al.: "Evaluation of a new type of vanadium oxide from peroxo-polyvanadate as a cathode material for rechargeable lithium batteries" J. Electrochem. soc.142. 3664-3668 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] M.Hibino et al.: "Theoretical consideration concerming diffusion coefficient measurements by potential step chronoamperometry of insertion compounds" Denki Kagaku. 63. 1040-1045 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.M.Li et al.: "Properties of mixed-oxide MoO3/V205 electrochromic films coated from peroxo-poly-molybdovanadate solutions" Solar Energy Mater.39. 179-190 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] I.Takahashi et al.: "Thermochromic V1-xWxO2 thin films prepared by wet-coating nsin polyvanadate solutions" Jpn. J. of Appl. Phis.(submitt).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Sone et al.: "Reversible electrochromic performance of prussian blue coated with proton conductive Ta2O5・nH20 film" Solid State Ionics. 83. 135-143 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Sone et al.: "Proton conductivity of NAFION 117 measured by four-electrode AC-impedance method" J. of Electrochem. Soc.(submitted).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] I.Tsuyumoto et al.: "Humidity sensor using potassium hexagonal tungsten bronze synthesized from peroxo-polytungstic acid and its resistivity change mechanism" Materials Research Bulletin. 31/1. 17-28 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] I.Tsuyumoto et al.: "Humidity sensor using potassium hexagonal tungsten bronze synthesized from peroxo-polytungstic acid" Sensors and actuators. 30/2. 95-99 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.M.Li et al: "Coloration dynamics of tungsten oxide based all solid state electrochromic device" Electrochimaca ACTA. 5. 807-812 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] K.Hinokum et al: "Coloration dynamics of spin-coated MoO_3・nH_2O electrochromic films fabricated from peroxo-polymolybdate solution" J.Electrochem.Soc. 4. 876-879 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] S.Takano et al: "Electrochromic thin films coated from peroxo-polymolybdotungstate solution" Solid State Ionics. 70/71. 636-641 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] J.Oi et al: "Hexagonal and pyrochlore-type cesium tungstates synthesized from cesium peroxo-polytungstate and their intercalation chemistry" Solid State Ionics. 72. 204-208 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Sone et al: "Amorphous tantalum oxide proton conductor derived from peroxo-polyacid and its application for EC device" Solid State Ionics. 70/71. 316-320 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] I.Tsuyumoto et al: "Humidity sensor using potassium tungsten bronze synthesized from peroxo-polytungstic acid" Solid State Ionic Materials. 387-392 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.M.Li et al: "Electrochromic properties of spin-coated thin films from peroxo-polymolybdovanadate solutions" J.Electrochem.soc.142. 1194-1199 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] M.Hibino et al: "Preparation and lithium intercalation of a new vanadium oxide with a two-dimensional structure" Solid State Ionics. 79. 239-244 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] M.Ugaji et al: "Evaluation of a new type of vanadium oxide from peroxo-polyvanadate as a cathode material for rechargeable lithium batteries" J.Electrochem.Soc.142. 3664-3668 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] M.Hibino et al: "Theoretical consideration concerning diffusion coefficient measurements by potential step chronoamperometry for insertion compounds" Denki Kagaku. 63. 1040-1045 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.M.Li et al: "Properties of mixed-oxide MoO_3/V_2O_5 electrochromic films coated from peroxo-poly-molybdovanadate solutions" Solar Energy Mater. 39. 179-190 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] I.Takahashi et al: "Thermochromic V_<1-x>W_xO_2 thin films prepared by wet-coating usin polyvanadate solutions" Jpn.J.of Appl.Phis.(submitt).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Sone et al: "Reversible electrochromic performance of prussian blue coated with proton conductive Ta_2O_5・nH_2O film" Solid State Ionics. 83. 135-143 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Sone et al: "Proton conductivity of NAFION 117 measured by four-electrode AC-impedance method" J.of Electrochem.Soc.(submitted).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] I.Tsuyumoto et al: "Humidity sensor using potassium hexagonal tungsten bronze synthesized from peroxo-polytungsitc acid and its resistivity change mechanism" Materials Research Bulletin. 31/1. 17-28 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] I.Tsuyumoto et al: "Humidity sensor using potassium hexagonal tungsten bronze synthesized from peroxo-polytungstic acid" Sensors and actuators. 30/2. 95-99 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary

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Published: 1994-04-01   Modified: 2016-04-21  

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