JP2006318928A5 - - Google Patents

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JP2006318928A5
JP2006318928A5 JP2006199630A JP2006199630A JP2006318928A5 JP 2006318928 A5 JP2006318928 A5 JP 2006318928A5 JP 2006199630 A JP2006199630 A JP 2006199630A JP 2006199630 A JP2006199630 A JP 2006199630A JP 2006318928 A5 JP2006318928 A5 JP 2006318928A5
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Japan
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active material
positive electrode
electrode active
lithium secondary
secondary battery
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JP2006199630A
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Japanese (ja)
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JP2006318928A (en
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Priority to JP2006199630A priority Critical patent/JP2006318928A/en
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Publication of JP2006318928A publication Critical patent/JP2006318928A/en
Publication of JP2006318928A5 publication Critical patent/JP2006318928A5/ja
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リチウムイオンの吸蔵放出可能なリチウム含有複合酸化物を正極活物質とする非水系リチウム二次電池用の前記正極活物質において、少なくともリチウム塩と遷移金属酸化物、酸化コバルト及び／又は水酸化アルミニウム、酸化アルミニウム等を含む原料を焼成し、組成式Ｌｉ a Ｍｎ x Ｎｉ y Ｘ z Ｏ 2 （Ｘ：ＣｏもしくはＡｌの少なくとも１種）で表され、1≦a≦1.2、0≦x≦0.65、0.35≦y≦1、0≦z≦0.65の範囲で、かつx+y+z=1の層状岩塩構造を有する複合酸化物としたものであって、大気中、窒素雰囲気中あるいは酸素雰囲気中にて９００℃〜１０００℃で焼成することによって、Ｘ線回折パタ−ンから得られる各回折ピ−クの積分幅からＨａｌｌ法によって測定した結晶子の大きさが６００Åより大きく、８００Å未満としたことを特徴とするリチウム二次電池用正極活物質。 In the positive electrode active material for a non-aqueous lithium secondary battery using a lithium-containing composite oxide capable of occluding and releasing lithium ions as a positive electrode active material, at least a lithium salt and a transition metal oxide, cobalt oxide and / or aluminum hydroxide, A raw material containing aluminum oxide or the like is fired and expressed by a composition formula Li a Mn x Ni y X z O 2 (X: at least one of Co or Al), 1 ≦ a ≦ 1.2, 0 ≦ x ≦ 0.65, 0.35 ≤ y ≤ 1, 0 ≤ z ≤ 0.65, and a composite oxide having a layered rock salt structure of x + y + z = 1, in air, nitrogen atmosphere or oxygen atmosphere by baking at 900 ° C. to 1000 ° C., X-ray diffraction pattern - the diffraction peak obtained from the emission - the crystallite size measured by Hall method from the integral width of click is larger than 600 Å, that it has less than 800Å Features Cathode active material for lithium secondary batteries. 前記正極活物質が、組成式ＬｉaＭｎxＮｉyＸzＯ2（Ｘ＝Ｃｏ、Ａｌのうち少なくとも一種）で表され、1≦a≦1.2、0.2≦x≦0.5、0.35≦y≦0.8、0≦z≦0.45の範囲でかつx+y+z=1の層状岩塩構造を有する複合酸化物であ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。 The positive electrode active material is represented by a composition formula Li a Mn x Ni y X z O 2 (X = Co, at least one of Al), and 1 ≦ a ≦ 1.2, 0.2 ≦ x ≦ 0.5 , 0.35 ≦ y ≦ 0.8 the positive electrode active material for lithium secondary batteries of the serial placement in claim 1, characterized in that a composite oxide having 0 ≦ z ≦ 0.45 range a and x + y + z = 1 in the layered rock salt structure. 前記焼成の後に解砕し、さらに大気中、窒素雰囲気中あるいは酸素雰囲気中にて４００℃〜９００℃で熱処理したものであることを特徴とする請求項１または２に記載のリチウム二次電池用正極活物質。 3. The lithium secondary battery according to claim 1, wherein the lithium secondary battery is crushed after the firing and further heat-treated at 400 ° C. to 900 ° C. in air, nitrogen atmosphere, or oxygen atmosphere . Positive electrode active material. 前記正極活物質を合成するために使用する原料を溶媒中へ分散させ、メジアン粒径Ｄ50が1μｍ以下となるよう粉砕混合したスラリ−を乾燥させ、造粒し顆粒状にした後、前記焼成を行い、（タップ密度／真密度）×100[％]で表される充填性が２５％以上５０％未満となしたことを特徴とする請求項１〜３の何れか１項に記載のリチウム二次電池用正極活物質。 The raw material used for synthesizing the positive electrode active material is dispersed in a solvent, and the slurry pulverized and mixed so that the median particle size D50 is 1 μm or less is dried, granulated, and granulated, and then the firing is performed. performed, lithium according to any one of claim 1 to 3, filling properties represented by (tap density / true density) × 100 [%] is characterized in that no less than 50% or more 25% two Positive electrode active material for secondary battery. 請求項１〜４の何れか１項に記載の正極活物質を用いて構成され、内部抵抗が３５Ω以下、内部抵抗上昇率が２０％以下である車両用に適した非水系リチウム二次電池。 Is constructed by using the positive electrode active material according to any one of claims 1 to 4, the internal resistance is 35Ω or less, a non-aqueous lithium secondary battery suitable for a vehicle internal resistance increase rate is 20% or less.
JP2006199630A 2003-03-25 2006-07-21 Cathode active substance for lithium secondary battery, and nonaqueous lithium secondary battery Pending JP2006318928A (en)

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JP2006199630A JP2006318928A (en) 2003-03-25 2006-07-21 Cathode active substance for lithium secondary battery, and nonaqueous lithium secondary battery

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JP2003082820 2003-03-25
JP2006199630A JP2006318928A (en) 2003-03-25 2006-07-21 Cathode active substance for lithium secondary battery, and nonaqueous lithium secondary battery

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JP2004086963A Division JP4172024B2 (en) 2003-03-25 2004-03-24 Positive electrode active material for lithium secondary battery, method for producing the same, and non-aqueous lithium secondary battery

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JP2006318928A JP2006318928A (en) 2006-11-24
JP2006318928A5 true JP2006318928A5 (en) 2008-03-27

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Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008091028A1 (en) * 2007-01-26 2008-07-31 Mitsui Mining & Smelting Co., Ltd. Lithium transition metal oxide having layered structure
WO2016067142A1 (en) 2014-10-27 2016-05-06 Semiconductor Energy Laboratory Co., Ltd. Particle, electrode, power storage device, electronic device, and method for manufacturing electrode
JP6519264B2 (en) * 2015-03-26 2019-05-29 日産自動車株式会社 Positive electrode for non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery using the same
WO2018007908A1 (en) 2016-07-05 2018-01-11 Semiconductor Energy Laboratory Co., Ltd. Positive electrode active material, method for manufacturing positive electrode active material, and secondary battery
CN116387603A (en) 2016-10-12 2023-07-04 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
KR102469162B1 (en) 2017-05-12 2022-11-22 가부시키가이샤 한도오따이 에네루기 켄큐쇼 Positive electrode active material particles
KR102656986B1 (en) 2017-05-19 2024-04-11 가부시키가이샤 한도오따이 에네루기 켄큐쇼 Cathode active material, method for producing cathode active material, and secondary battery
US20200176770A1 (en) 2017-06-26 2020-06-04 Semiconductor Energy Laboratory Co., Ltd. Method for manufacturing positive electrode active material, and secondary battery
CN112151773B (en) * 2019-06-26 2022-05-24 中国科学院物理研究所 Positive active material, preparation method thereof and lithium battery

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* Cited by examiner, † Cited by third party
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JP2001357850A (en) * 2000-06-15 2001-12-26 Toyota Central Res & Dev Lab Inc Lithium transition metal composite oxide for positive electrode active material of lithium secondary battery and lithium secondary battery using it
JP4092950B2 (en) * 2001-05-17 2008-05-28 三菱化学株式会社 Method for producing lithium nickel manganese composite oxide
JP2003051308A (en) * 2001-08-03 2003-02-21 Yuasa Corp Positive electrode active material for lithium secondary battery, its manufacturing method and lithium secondary battery
JP2003089526A (en) * 2001-09-12 2003-03-28 Mitsubishi Chemicals Corp Lithium nickel manganese multiple oxide, positive electrode material for lithium secondary cell by using the same, positive electrode for lithium secondary cell, and lithium secondary cell
JP4172024B2 (en) * 2003-03-25 2008-10-29 日立金属株式会社 Positive electrode active material for lithium secondary battery, method for producing the same, and non-aqueous lithium secondary battery

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