Negative electrode active material for non-aqueous

专利名称：Negative electrode active material for non-aqueous electrolyte secondary battery,negative electrode for non-aqueous

electrolyte secondary battery, non-aqueouselectrolyte secondary battery, and methodfor producing negative electrode activematerial particles

发明人：松野 拓史,加茂 博道,廣瀬 貴一,吉川 博樹申请号：JP2015112085申请日：20150602公开号：JP6548959B2公开日：20190724

摘要：The present invention is a negative electrode active material for a non-aqueouselectrolyte secondary battery, including: negative electrode active material particles thatcontain a silicon compound (SiO x : 0.5 ‰¤ x ‰¤ 1.6) containing a Li compound; whereinthe silicon compound is at least partially coated with a carbon coating, the negativeelectrode active material particles are coated with a coating composed of at least one ofa compound having a boron-fluorine bond and a compound having a phosphorous-fluorine bond on at least a part of the surface of either or both of the silicon compoundand the carbon coating, the negative electrode active material particles contain a boronelement or a phosphorous element in a range of 10 ppm by mass to 10000 ppm by masswith respect to the total amount of the negative electrode active material particles. Thisprovides a negative electrode active material for a non-aqueous electrolyte secondary

battery that can increase the battery capacity and improve the cycle performance andthe battery initial efficiency.

申请人：信越化学工業株式会社

地址：東京都千代田区大手町二丁目６番１号

国籍：JP

代理人：好宮 幹夫

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