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2000 Fiscal Year Final Research Report Summary

CHARACTERIZATION OF HYDROGEN ABSORBING ALLOYS AT LOW TEMPERATURE AND THE ALLOY DESIGNING

Research Project

Project/Area Number 11650861
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 無機工業化学
Research InstitutionOSAKA PREFECTURE UNIVERSITY

Principal Investigator

FURUKAWA Naoji  OSAKA PREFECTURE UNIVERSITY, GRADUATE SCHOOL OF ENGINEERING, ASSOCIATE PROFESSOR, 工学研究科, 講師 (70081338)

Co-Investigator(Kenkyū-buntansha) NOHARA Shinji  OSAKA PREFECTURE UNIVERSITY, GRADUATE SCHOOL OF ENGINEERING, ASSISTANT, 大学院・工学研究科, 助手 (40326278)
INOUE Hiroshi  OSAKA PREFECTURE UNIVERSITY, GRADUATE SCHOOL OF ENGINEERING, ASSISTANT PROFESSOR, 大学院・工学研究科, 助教授 (00213174)
IWAKURA Chiaki  OSAKA PREFECTURE UNIVERSITY, GRADUATE SCHOOL OF ENGINEERING, PROFESSOR, 大学院・工学研究科, 教授 (00029183)
Project Period (FY) 1999 – 2000
KeywordsHYDROGEN ABSORBING ALLOY / MICKEL-METAL HYDRIDE BATTERY / LOW TEMPERATURE / CHARGE-DISCHARGE CHARACTERISTICS / HIGH RATE DISCHARGEABILITY / CHARGE TRANSFER RESISTANCE / DIFFUSION COEFICIENT / 合金設計
Research Abstract

Charge efficiency, hydrogen absorption, exchange current density and charge-transfer resistance of the MmNi_<3.6>Mn_<0.4>Al_<0.3>Co_<0.7> alloy as well as electrolytic conductivity of electrolyte and diffusion coefficient of hydrogen in the alloy were examined in the temperature range of 25℃ to -40℃. From the rate of hydrogen absorption in solid-gas phase, exchange current density and charge-transfer resistance, it was suggested that the charge-transfer reaction was the rate-determining step in the charge process of MmNi_<3.6>Mn_<0.4>Al_<0.3>Co_<0.7> alloy electrode at relatively low temperatures. The addition of Mo to the alloy electrode is effective for improving the electrocatalytic activity on the electrode surface at relatively low temperatures. Modification of the surface of the alloy particles with carbon has also found to improve the performance of the Ni/MH battery.

  • Research Products

    (11 results)

All Other

All Publications (11 results)

  • [Publications] Chiaki Iwakura: "Raman and X-ray Photoelectron Spectroscopic Investigation on a New Electrode Material for Nickel-Metal Hydride Batteries : MgNi-Graphite Composites Prepared by Ballmilling"J.Electrochem.Soc.. 146・5. 1659-1663 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Chiaki Iwakura: "A New Electrode Material for Nickel-Metal Hydride Batteries : MgNi-Graphite Composites Prepared by Ballmilling"J.Alloy Comp.. 293-295. 653-657 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Shu G.Zhang: "Electrochemical and Structural Characteristics of Amorphous MgNi_x (x≧1) Alloys Prepared by Mechanical Alloying"J.Alloy Comp.. 293-295. 552-555 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Senoh: "Relationship between Equilibrium Hydrogen Pressure and Exchange Current for the Hydrogen Electrode Reaction at MmNi_<4.0-x>Mn_<0.75>Al_<0.25>Co_x Alloy Electrodes"J.Electrochem.Soc.. 147・7. 2451-2455 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Senoh: "Charge Efficiency of Misch Metal-Based Hydrogen Storage Alloy Electrodes at Relatively Low Temperatures"Electrochim.Acta. 46・9. 967-971 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 岩倉千秋: "電池技術第11巻"(社)電気化学会電池技術委員会. 140 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Chiaki Iwakura: "Raman and Xray Spectroscopic Investigation on a New Electrode Material for Nickel-Metal Hydride Batteries : MgNi-Graphite Composites Prepared by Ballmilling."J.Electrochem.Soc.. 146 5. 1659-1663 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Chiaki Iwakura: "A New Electrode Material for Nickel-Metal Hydride Batteries : MgNi-Graphite Composites Prepared by Ballmilling."J.Alloy Comp.. 293-295. 653-657 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Shu G.Zhang: "Electrochemical and Structual Characteristics of Amorphous MgNi_x(x≧1) Alloys Prepared by Mechanical Alloying."J.Alloy Comp.. 293-295. 552-555 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Senoh: "Relationship between Equilibrium Hydrogen Pressure and Exchange Current for the Hydrogen Electrode Rteaction at MmNi_<4.0-x>Mn_<0.75>Al_<0.25>Co_x Alloy electrodes."J.Electrochem.Soc.. 147 7. 2451-2455 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Senoh: "Charge Efficiency of Misch Metal-Based Hydrogen storage Alloy Electrodes at Relatively Low Temperatures."Electrochim.Acta. 46 9. 967-971 (2001)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2002-03-26  

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