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Publication number
JP2006261132A5
JP2006261132A5 JP2006137302A JP2006137302A JP2006261132A5 JP 2006261132 A5 JP2006261132 A5 JP 2006261132A5 JP 2006137302 A JP2006137302 A JP 2006137302A JP 2006137302 A JP2006137302 A JP 2006137302A JP 2006261132 A5 JP2006261132 A5 JP 2006261132A5
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Prior art keywords
positive electrode
electrode active
lithium
active material
lithium secondary
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JP2006137302A
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JP4736943B2 (en
JP2006261132A (en
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Priority claimed from JP2006137302A external-priority patent/JP4736943B2/en
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Publication of JP2006261132A5 publication Critical patent/JP2006261132A5/ja
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Claims (8)

リチウム二次電池用正極活物質の製造方法であって、
コバルト酸リチウム複合酸化物を製造する工程と、
前記コバルト酸リチウム複合酸化物とＡｌ２Ｏ３とを混合する工程と、
を有することを特徴とするリチウム二次電池用正極活物質の製造方法。 A method for producing a positive electrode active material for a lithium secondary battery, comprising:
Producing a lithium cobalt oxide composite oxide;
Mixing the lithium cobaltate composite oxide and Al 2 O 3 ;
The manufacturing method of the positive electrode active material for lithium secondary batteries characterized by having. 前記コバルト酸リチウム複合酸化物と前記Ａｌ２Ｏ３との混合物を加熱処理することを特徴とする請求項１に記載のリチウム二次電池用正極活物質の製造方法。 2. The method for producing a positive electrode active material for a lithium secondary battery according to claim 1, wherein the mixture of the lithium cobaltate composite oxide and the Al 2 O 3 is heat-treated. 前記Ａｌ２Ｏ３の混合量は、前記コバルト酸リチウム複合酸化物１００重量部に対し、０．０５〜１０重量部であることを特徴とする請求項１又は２に記載のリチウム二次電池用正極活物質の製造方法。 Mixing amount of the Al 2 O 3 is relative to the lithium cobalt composite oxide 100 parts by weight of a lithium secondary battery according to claim 1 or 2, characterized in that 0.05 to 10 parts by weight A method for producing a positive electrode active material. 前記Ａｌ２Ｏ３の平均粒子径は、０．０１μｍ〜０．２５μｍであることを特徴とする請求項１乃至３のいずれかに記載のリチウム二次電池用正極活物質の製造方法。 The average particle diameter of the Al 2 O 3 is method for producing a positive electrode active material for lithium secondary battery according to any one of claims 1 to 3, characterized in that it is 0.01Myuemu～0.25Myuemu. 前記コバルト酸リチウム複合酸化物は、組成式がＬｉThe lithium cobaltate composite oxide has a composition formula of Li ｘx ＣｏＯCoO ２2 （但し、ｘは、０．９６≦ｘ≦１．２０を満たす）で表され、Ｃｏ以外の遷移金属をさらに含有することを特徴とする請求項１乃至４のいずれかに記載のリチウム二次電池用正極活物質の製造方法。(Wherein x satisfies 0.96 ≦ x ≦ 1.20), and further contains a transition metal other than Co. 5. The lithium secondary according to claim 1, A method for producing a positive electrode active material for a battery. 前記コバルト酸リチウム複合酸化物は、組成式がＬｉｘＣｏＯ２で表され、ｘの値が、１．０５≦ｘ≦１．１０を満たすことを特徴とする請求項１乃至４のいずれかに記載のリチウム二次電池用正極活物質の製造方法。 The lithium cobalt complex oxide represented by a compositional formula of Li x CoO 2, the value of x is, in any one of claims 1 to 4, characterized in that satisfy 1.05 ≦ x ≦ 1.10 The manufacturing method of the positive electrode active material for lithium secondary batteries of description. コバルト酸リチウム複合酸化物を有するリチウム二次電池用正極活物質であって、
前記コバルト酸リチウム複合酸化物は、その粒子表面がＡｌ２Ｏ３によって被覆されており、
前記コバルト酸リチウム複合酸化物は、組成式がＬｉｘＣｏＯ２で表され、ｘの値が、１．０５≦ｘ≦１．１０を満たすことを特徴とするリチウム二次電池用正極活物質。 A positive electrode active material for a lithium secondary battery having a lithium cobaltate composite oxide,
The lithium cobaltate composite oxide has a particle surface coated with Al 2 O 3 ,
The lithium cobalt complex oxide represented by a compositional formula of Li x CoO 2, the value of x, the positive electrode active material for a lithium secondary battery, characterized by satisfying 1.05 ≦ x ≦ 1.10. 前記Ａｌ２Ｏ３の被覆量は、前記コバルト酸リチウム複合酸化物１００重量部に対し、０．０５〜１０重量部であることを特徴とする請求項７に記載のリチウム二次電池用正極活物質。 Coverage of the Al 2 O 3 is relative to the lithium cobalt composite oxide 100 parts by weight, the positive electrode active for a lithium secondary battery according to claim 7, characterized in that the 0.05 to 10 parts by weight material.
JP2006137302A 2006-05-17 2006-05-17 Positive electrode active material for lithium secondary battery and method for producing the same Expired - Lifetime JP4736943B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006137302A JP4736943B2 (en) 2006-05-17 2006-05-17 Positive electrode active material for lithium secondary battery and method for producing the same

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JP2006137302A JP4736943B2 (en) 2006-05-17 2006-05-17 Positive electrode active material for lithium secondary battery and method for producing the same

Related Parent Applications (1)

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JP32060299A Division JP2001143703A (en) 1999-11-11 1999-11-11 Positive electrode active substance for use in lithium secondary battery

Publications (3)

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JP2006261132A JP2006261132A (en) 2006-09-28
JP2006261132A5 true JP2006261132A5 (en) 2007-07-05
JP4736943B2 JP4736943B2 (en) 2011-07-27

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CN111446424B (en) 2016-10-12 2023-06-09 株式会社半导体能源研究所 Positive electrode active material particle and method for producing positive electrode active material particle
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KR20240023214A (en) 2017-05-19 2024-02-20 가부시키가이샤 한도오따이 에네루기 켄큐쇼 Positive electrode active material, method for manufacturing positive electrode active material, and secondary battery
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