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METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
To provide a simple and convenient method for manufacturing a positive electrode active material which enables the achievement of higher productivity and which has high crystallinity.SOLUTION: A method for manufacturing a positive electrode active material for a nonaqueous electrolyte secondary battery, containing a lithium nickel composite oxide comprises the steps of: obtaining a lithium mixture containing at least one of a nickel composite hydroxide and a nickel composite oxide, and a lithium compound; shaping the lithium mixture to gain a shaped body of 1 mm in maximum size and 1.6 g/cm3 or more in density; and sintering the shaped body at a temperature of 730°C up to 1000°C for a time shorter than 10 hours in an oxidizing atmosphere to obtain a lithium nickel composite oxide, of which a lithium-position occupancy rate of a layer chiefly containing lithium, determined by Rietveld analysis of an X-ray diffraction pattern, is 94% or more.SELECTED DRAWING: Figure 1
【課題】 より生産性高く、高い結晶性を有する正極活物質の簡便な製造方法などを提供することを目的とする。【解決手段】 リチウムニッケル複合酸化物を含む非水系電解質二次電池用正極活物質の製造方法であって、ニッケル複合水酸化物、及び、ニッケル複合酸化物の少なくとも一方と、リチウム化合物と、を含むリチウム混合物を得ることと、リチウム混合物を成形して、最長径が１ｍｍ以上、密度１．６ｇ／ｃｍ３以上の成形体を得ることと、成形体を、酸化性雰囲気下、７３０℃以上１０００℃以下、１０時間未満で焼成して、Ｘ線回折パターンのリートベルト解析から得られるリチウム主体層のリチウム席占有率が９４％以上であるリチウムニッケル複合酸化物を得ることと、を備える、非水系電解質二次電池用正極活物質の製造方法などによる。【選択図】図１
METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
To provide a simple and convenient method for manufacturing a positive electrode active material which enables the achievement of higher productivity and which has high crystallinity.SOLUTION: A method for manufacturing a positive electrode active material for a nonaqueous electrolyte secondary battery, containing a lithium nickel composite oxide comprises the steps of: obtaining a lithium mixture containing at least one of a nickel composite hydroxide and a nickel composite oxide, and a lithium compound; shaping the lithium mixture to gain a shaped body of 1 mm in maximum size and 1.6 g/cm3 or more in density; and sintering the shaped body at a temperature of 730°C up to 1000°C for a time shorter than 10 hours in an oxidizing atmosphere to obtain a lithium nickel composite oxide, of which a lithium-position occupancy rate of a layer chiefly containing lithium, determined by Rietveld analysis of an X-ray diffraction pattern, is 94% or more.SELECTED DRAWING: Figure 1
【課題】 より生産性高く、高い結晶性を有する正極活物質の簡便な製造方法などを提供することを目的とする。【解決手段】 リチウムニッケル複合酸化物を含む非水系電解質二次電池用正極活物質の製造方法であって、ニッケル複合水酸化物、及び、ニッケル複合酸化物の少なくとも一方と、リチウム化合物と、を含むリチウム混合物を得ることと、リチウム混合物を成形して、最長径が１ｍｍ以上、密度１．６ｇ／ｃｍ３以上の成形体を得ることと、成形体を、酸化性雰囲気下、７３０℃以上１０００℃以下、１０時間未満で焼成して、Ｘ線回折パターンのリートベルト解析から得られるリチウム主体層のリチウム席占有率が９４％以上であるリチウムニッケル複合酸化物を得ることと、を備える、非水系電解質二次電池用正極活物質の製造方法などによる。【選択図】図１
METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
非水系電解質二次電池用正極活物質の製造方法
NAGAKURA TOSHIHIKO (author) / NAGATA HIROAKI (author) / TOMA TAKAHIRO (author) / SUZUKI ATSUSHI (author)
2023-07-28
Patent
Electronic Resource
Japanese
IPC:
H01M
Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie
,
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
/
C01G
Verbindungen der von den Unterklassen C01D oder C01F nicht umfassten Metalle
,
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
/
C04B
Kalk
,
LIME
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