A portable information terminal

专利名称：A portable information terminal

发明人：落合 輝明,川上 貴洋,三上 真弓,門馬 洋平,鶴田 彩

恵,高橋 正弘

申请号：JP2019218361申请日：20191202公开号：JP2020047595A公开日：20200326

专利附图：

摘要：Problem to be solved: to provide a positive electrode active material particlecapable of suppressing a decrease in capacity in a charging \\/ discharging cycle, a positiveelectrode having the positive electrode active particles, and a portable information

terminal having the positive electrode. Solution: first region 101 andHaving a secondregion 102The second region 102 isHaving an area that is in contact with the outside ofthe first regionThe first region 101 isLithium andCobalt blueManganeseElement M whichis one or more selected from nickel andOxygen andAndThe second region 102 isElementM andOxygen andMagnesium andFluorine andAndThe atomic number ratio (Li \\/ M) oflithium to the element M measured by X-ray photoelectron spectroscopy is 0.5 or moreand less thanThe atomic number ratio (mg \\/ M) of magnesium to the element Mmeasured by X-ray photoelectron spectroscopy is 100 (100) or more of the positiveactive material 100.Diagram

申请人：株式会社半導体エネルギー研究所

地址：神奈川県厚木市長谷３９８番地

国籍：JP

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