SECONDARY BATTERY, BATTERY PACK, AND VEHICLE

专利名称：SECONDARY BATTERY, BATTERY PACK, AND

VEHICLE

发明人：Keigo HOSHINA,Wen ZHANG,Tetsuya

SASAKAWA,Yasuhiro HARADA,NorioTAKAMI

申请号：US17007147申请日：20200831

公开号：US20210296631A1公开日：20210923

专利附图：

摘要：According to one embodiment, provided is a secondary battery including apositive electrode, a negative electrode, and an electrolyte. The negative electrodeincludes a niobium-titanium composite oxide having fluorine atoms on at least part of asurface the niobium-titanium composite oxide. An abundance ratio Aof fluorine atoms, anabundance ratio Aof titanium atoms, and an abundance ratio Aof niobium atoms on asurface of the negative electrode according to X-ray photoelectron spectroscopy satisfya relationship of 3.5≤A/(A+A)≤50.

申请人：KABUSHIKI KAISHA TOSHIBA

地址：Tokyo JP

国籍：JP

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