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POSITIVE ELECTRODE ACTIVE MATERIAL FOR MAGNESIUM SECONDARY CELL, POSITIVE ELECTRODE FOR MAGNESIUM SECONDARY CELL, AND MAGNESIUM SECONDARY CELL 新技術説明会

外国特許コード F170009134
整理番号 S2017-0184-N0
掲載日 2017年7月20日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2016JP066795
国際公開番号 WO 2016199732
国際出願日 平成28年6月6日(2016.6.6)
国際公開日 平成28年12月15日(2016.12.15)
優先権データ
  • 特願2015-117810 (2015.6.10) JP
発明の名称 (英語) POSITIVE ELECTRODE ACTIVE MATERIAL FOR MAGNESIUM SECONDARY CELL, POSITIVE ELECTRODE FOR MAGNESIUM SECONDARY CELL, AND MAGNESIUM SECONDARY CELL 新技術説明会
発明の概要(英語) The present invention addresses the problem of providing: a positive electrode active material for a magnesium secondary cell with which it is possible to obtain a magnesium secondary cell exhibiting excellent charge/discharge characteristics; and a positive electrode for a magnesium secondary cell and a magnesium secondary cell in which the positive electrode active material is used. The present invention pertains to: a positive electrode active material for a magnesium secondary cell comprising a magnesium composite oxide, which is represented by the composition formula (1): MgxM1yM2zO2 and which has a layered rock-salt type crystal structure of space group Fm-3m; and a positive electrode for a magnesium secondary cell and a magnesium secondary cell in which the positive electrode active material is used. In formula (1): M1 is Ni, Co, or Mn; M2 is at least one element, different from M1, selected from the group consisting of Ni, Co, Mn, Ti, V, Cr, Fe, Cu, Nb, W, Mo, and Ru; 0 < x ≤ 1; 0 < y < 2; 0 < z < 1; and 1.5 ≤ x + y + z ≤ 2.0.
従来技術、競合技術の概要(英語) BACKGROUND ART
In recent years, the use of the vehicle battery from a mobile device, to a stationary power source such as a diversified and, at a low cost alternative to conventional lithium ion secondary battery having a high energy density in the development of next-generation secondary battery has been expected. In particular the generation of the secondary battery is the magnesium secondary battery, charge and discharge reaction (i) a high capacity can be used for the second electron can be expected, a negative electrode (ii) magnesium can be used in addition to the excellent safety due to the relatively low potential, the high voltage battery becomes possible to operate, (iii) reduce the risk of localized magnesium in a production cost, and a number of advantages such as, research and development is being advanced.
Initially developed, the magnesium secondary battery as a positive electrode active material, TiS2 、ZrS2 、RuO2 、Co3 O4 、V2 O5 or the like is used but, in recent years of various magnesium composite oxide crystal structure has been proposed.
For example, is (Tetsu Ichitsubo, et al., Journal of Materials Chemistry, 21, 11764 (2011) ) Ichitsubo et al., as the positive electrode active material of the magnesium secondary battery, having a rock-salt type structure mg0.67 Ni1.33 O2 is disclosed. In addition, the Yagi et al. (Shunsuke Yagi, et al., Japanese Journal of Applied Physics, 52, 025501 (2013)), a rock-salt type structure MgNiO2 synthesis methods have been disclosed.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • TOKYO UNIVERSITY OF SCIENCE FOUNDATION
  • 発明者(英語)
  • IDEMOTO, Yasushi
  • KITAMURA, Naoto
  • ISHIDA, Naoya
国際特許分類(IPC)
指定国 National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS KE KG KN KP KR KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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