JP7020721B2 - リチウム二次電池用正極活物質、その製造方法、それを含むリチウム二次電池用正極及びリチウム二次電池 - Google Patents
リチウム二次電池用正極活物質、その製造方法、それを含むリチウム二次電池用正極及びリチウム二次電池 Download PDFInfo
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- JP7020721B2 JP7020721B2 JP2020520155A JP2020520155A JP7020721B2 JP 7020721 B2 JP7020721 B2 JP 7020721B2 JP 2020520155 A JP2020520155 A JP 2020520155A JP 2020520155 A JP2020520155 A JP 2020520155A JP 7020721 B2 JP7020721 B2 JP 7020721B2
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- positive electrode
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- heat treatment
- lithium
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Description
本出願は、2017年12月11日付韓国特許出願第2017-0169449号に基づいた優先権の利益を主張し、当該韓国特許出願の文献に開示された全ての内容は本明細書の一部として含まれる。
[化学式1]
Li1+a(NixCoyM1 zM2 w)1-aO2
前記化学式1中、
0≦a≦0.2、0.6<x≦1、0<y≦0.4、0<z≦0.4、0≦w≦0.1であり、M1は、Mn及びAlからなる群から選択される少なくとも一つであり、M2は、Zr、B、W、Mo、Cr、Ta、Nb、Mg、Ce、Hf、Ta、La、Ti、Sr、Ba、Ce、F、P、S及びYからなる群から選択される少なくとも一つである。
先ず、本発明に係る正極活物質粒子100は、図1に示されたように、リチウム遷移金属酸化物を含み、前記リチウム遷移金属酸化物は、層状構造を有する中心部10及び前記中心部とは異なる構造の2次相(second phase)を有する表面部20を含む。
[化学式1]
Li1+a(NixCoyM1 zM2 w)1-aO2
前記化学式1中、
0≦a≦0.2、0.6<x≦1、0<y≦0.4、0<z≦0.4、0≦w≦0.1であり、より好ましくは0≦a≦0.1、0.7≦x≦1、0≦y≦0.3、0≦z≦0.3、0≦w≦0.05であってもよい。
M1は、Mn及びAlからなる群から選択される少なくとも一つであり、M2は、Zr、B、W、Mo、Cr、Ta、Nb、Mg、Ce、Hf、Ta、La、Ti、Sr、Ba、Ce、F、P、S及びYからなる群から選択される少なくとも一つである。
一方、本発明に係る正極活物質の製造方法は、正極活物質前駆体及びリチウム原料物質を混合し、1次熱処理を行う段階;及び前記1次熱処理より低い温度で2次熱処理を行って正極活物質を製造する段階;を含み、前記1次熱処理及び2次熱処理は、それぞれ酸素雰囲気で行われ、前記2次熱処理は、酸素濃度50%以上の酸素雰囲気下で行われることである。
また、本発明に係る正極活物質を含む、リチウム二次電池用正極を提供する。具体的に、前記二次電池用正極は、正極集電体、前記正極集電体上に形成された正極活物質層を含み、前記正極活物質層は、本発明に係る正極活物質を含む、リチウム二次電池用正極を提供する。
また、本発明は、前記正極を含む電気化学素子を製造することができる。前記電気化学素子は、具体的に、電池、キャパシタなどであってもよく、より具体的には、リチウム二次電池であってもよい。
実施例1
Ni0.8Co0.1Mn0.1(OH)2とLiOHを1:1.02のモル比で混合し、酸素雰囲気で800℃で14時間の間1次熱処理を行った。続けて、酸素100%雰囲気で700℃で5時間の間2次熱処理を行い、正極活物質を製造した。
2次熱処理を行う際に、酸素80%雰囲気で700℃で5時間の間2次熱処理を行うことを除いては、前記実施例1と同様に正極活物質及びこれを含むリチウム二次電池を製造した。
2次熱処理を行う際に、酸素50%雰囲気で700℃で5時間の間2次熱処理を行うことを除いては、前記実施例1と同様に正極活物質及びこれを含むリチウム二次電池を製造した。
2次熱処理を行う際に、酸素100%雰囲気で750℃で4時間の間2次熱処理を行うことを除いては、前記実施例1と同様に正極活物質及びこれを含むリチウム二次電池を製造した。
2次熱処理を行う際に、酸素80%雰囲気で750℃で5時間の間2次熱処理を行うことを除いては、前記実施例1と同様に正極活物質及びこれを含むリチウム二次電池を製造した。
2次熱処理を行う際に、酸素50%雰囲気で750℃で7時間の間2次熱処理を行うことを除いては、前記実施例1と同様に正極活物質及びこれを含むリチウム二次電池を製造した。
2次熱処理を行う際に、酸素100%雰囲気で650℃で7時間の間2次熱処理を行うことを除いては、前記実施例1と同様に正極活物質及びこれを含むリチウム二次電池を製造した。
2次熱処理を行う際に、酸素80%雰囲気で650℃で7時間の間2次熱処理を行うことを除いては、前記実施例1と同様に正極活物質及びこれを含むリチウム二次電池を製造した。
2次熱処理を行う際に、酸素50%雰囲気で650℃で5時間の間2次熱処理を行うことを除いては、前記実施例1と同様に正極活物質及びこれを含むリチウム二次電池を製造した。
Ni0.8Co0.1Mn0.1(OH)2とLiOHを1:1.02のモル比で混合し、酸素雰囲気で800℃で14時間の間1次熱処理を行って正極活物質を製造し、これを用いることを除いては、前記実施例1と同様の方法でリチウム二次電池を製造した。
2次熱処理を行う際に、酸素100%雰囲気で600℃で5時間の間2次熱処理を行うことを除いては、前記実施例1と同様に正極活物質及びこれを含むリチウム二次電池を製造した。
2次熱処理を行う際に、酸素20%雰囲気で700℃で5時間の間2次熱処理を行うことを除いては、前記実施例1と同様に正極活物質及びこれを含むリチウム二次電池を製造した。
2次熱処理を行う際に、酸素40%雰囲気で700℃で5時間の間2次熱処理を行うことを除いては、前記実施例1と同様に正極活物質及びこれを含むリチウム二次電池を製造した。
2次熱処理を行う際に、酸素100%雰囲気で800℃で5時間の間2次熱処理を行うことを除いては、前記実施例1と同様に正極活物質及びこれを含むリチウム二次電池を製造した。
2次熱処理を行う際に、酸素80%雰囲気で800℃で7時間の間2次熱処理を行うことを除いては、前記実施例1と同様に正極活物質及びこれを含むリチウム二次電池を製造した。
2次熱処理を行う際に、酸素50%雰囲気で800℃で7時間の間2次熱処理を行うことを除いては、前記実施例1と同様に正極活物質及びこれを含むリチウム二次電池を製造した。
正極活物質の断面を50nm厚さに切断し、TEM(FE‐STEM、TITAN G2 80‐100 ChemiSTEM)を用いて正極活物質の表面を観察し、正極活物質の相(phase)は小角回折パターン(small angle diffraction pattern、SADP)を介して測定した。
前記実施例1~9及び比較例1~7でそれぞれ製造したコイン型リチウム二次電池を25℃で0.2Cの定電流で4.25Vまで充電を実施し、0.2Cの定電流で2.5Vまで放電を実施した後、一番目のサイクルで充放電特性を観察し、これを下記表2に示した。
前記実施例1~9及び比較例1~7でそれぞれ製造したコイン型リチウム二次電池を用いてホットボックス実験を行った。
実施例1~9及び比較例1~7でそれぞれ製造した正極活物質を用いて円筒状電池を製造した後、過充電実験を行った。
前記実施例1~9及び比較例1~7でそれぞれ製造したコイン型リチウム二次電池の寿命特性を測定した。
10:中心部
20:表面部
Claims (9)
- 下記化学式1で表されるリチウム遷移金属酸化物を含み、
前記リチウム遷移金属酸化物は、層状構造を有する中心部及び前記中心部とは異なる構造の2次相を有する表面部を含み、
[化学式1]
Li1+a(NixCoyM1 zM2 w)1-aO2
前記化学式1中、
0≦a≦0.2、0.6<x≦1、0<y≦0.4、0<z≦0.4、0≦w≦0.1であり、
M1は、Mnであり、
M2は、Zr、B、W、Mo、Cr、Ta、Mg、Ce、Hf、Ta、La、Ti、Sr、Ba、Ce、F、P、S及びYからなる群から選択される少なくとも一つであり、
前記表面部は、粒子の表面から粒子中心の方向に30nm以内に位置する領域であり、
前記表面部は、スピネル構造及び岩塩構造のうち少なくとも一つを含む、正極活物質。 - 請求項1に記載の正極活物質を製造する製造方法であって、
正極活物質前駆体及びリチウム原料物質を混合し、1次熱処理を行う段階、及び
前記1次熱処理より低い温度で2次熱処理を行って正極活物質を製造する段階を含み、
前記1次熱処理及び前記2次熱処理は、それぞれ酸素雰囲気で行われ、
前記2次熱処理は、酸素濃度50%以上の酸素雰囲気下で行われる、正極活物質の製造方法。 - 前記1次熱処理は、800℃以上の温度で行われる、請求項2に記載の正極活物質の製造方法。
- 前記1次熱処理は、酸素濃度50%以上の酸素雰囲気下で行われる、請求項2または3に記載の正極活物質の製造方法。
- 前記1次熱処理は、10時間から20時間の間行われる、請求項2から4のいずれか一項に記載の正極活物質の製造方法。
- 前記2次熱処理は、600℃超過800℃未満の温度で行われる、請求項2から5のいずれか一項に記載の正極活物質の製造方法。
- 前記2次熱処理は、2時間から12時間の間行われる、請求項2から6のいずれか一項に記載の正極活物質の製造方法。
- 正極集電体と、
前記正極集電体上に形成された正極活物質層を含み、
前記正極活物質層は、請求項1に記載の正極活物質を含む、二次電池用正極。 - 請求項8に記載の正極、負極、前記正極と前記負極の間に介在された分離膜、及び電解質を含むリチウム二次電池。
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Application Number | Priority Date | Filing Date | Title |
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KR10-2017-0169449 | 2017-12-11 | ||
KR1020170169449A KR102217766B1 (ko) | 2017-12-11 | 2017-12-11 | 리튬 이차전지용 양극 활물질, 이의 제조방법, 이를 포함하는 리튬 이차전지용 양극 및 리튬 이차전지 |
PCT/KR2018/015331 WO2019117531A1 (ko) | 2017-12-11 | 2018-12-05 | 리튬 이차전지용 양극 활물질, 이의 제조방법, 이를 포함하는 리튬 이차전지용 양극 및 리튬 이차전지 |
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US20230034497A1 (en) * | 2020-01-30 | 2023-02-02 | Lg Energy Solution, Ltd. | Positive Electrode Active Material for Lithium Secondary Battery and Method of Preparing the Same |
CN112952102B (zh) * | 2021-02-22 | 2023-02-28 | 湘潭大学 | 一种复合金属氧化物表面修饰的锂金属电池负极集流体的制备方法与应用 |
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Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006302880A (ja) | 2005-03-23 | 2006-11-02 | Matsushita Electric Ind Co Ltd | リチウムイオン二次電池およびその製造法 |
JP2008204806A (ja) | 2007-02-20 | 2008-09-04 | Sumitomo Metal Mining Co Ltd | 非水電解液二次電池用正極活物質およびその製造方法、ならびに、該正極活物質を用いた非水電解液二次電池 |
WO2012141258A1 (ja) | 2011-04-14 | 2012-10-18 | 戸田工業株式会社 | Li-Ni複合酸化物粒子粉末及びその製造方法、並びに非水電解質二次電池 |
CN105185962A (zh) | 2015-08-31 | 2015-12-23 | 宁波金和锂电材料有限公司 | 一种高镍正极材料及其制备方法和锂离子电池 |
US20160181611A1 (en) | 2014-12-18 | 2016-06-23 | Unist Academy-Industry Research Corporation | Composite cathode active material, method of preparing the same, and cathode and lithium battery including the composite cathode active material |
JP2017107827A (ja) | 2015-11-27 | 2017-06-15 | 住友金属鉱山株式会社 | 非水系電解質二次電池用正極活物質とその製造方法、及び非水系電解質二次電池 |
JP2017188428A (ja) | 2016-03-30 | 2017-10-12 | Basf戸田バッテリーマテリアルズ合同会社 | 非水電解質二次電池用の正極活物質及びその製造方法、並びにそれを用いた非水電解質二次電池 |
JP2017536649A (ja) | 2014-10-02 | 2017-12-07 | エルジー・ケム・リミテッド | リチウム二次電池用正極活物質、この製造方法及びこれを含むリチウム二次電池 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9608266B2 (en) * | 2007-01-29 | 2017-03-28 | Umicore | Cathode material for lithium-ion rechargeable batteries |
KR101171734B1 (ko) * | 2009-04-01 | 2012-08-07 | 주식회사 엘지화학 | 리튬 이차전지용 양극 활물질 |
CN103702934B (zh) * | 2011-06-27 | 2016-09-28 | 新加坡国立大学 | 制备有效中孔性纳米复合材料正极LiMn1-xFexPO4材料的方法 |
KR101452029B1 (ko) * | 2011-09-20 | 2014-10-23 | 주식회사 엘지화학 | 고용량 양극활물질 및 이를 포함하는 리튬이차전지 |
CN102394295B (zh) * | 2011-11-23 | 2015-09-30 | 东莞新能源科技有限公司 | 一种锂离子电池及其正极材料 |
KR101805542B1 (ko) * | 2012-08-22 | 2017-12-07 | 삼성에스디아이 주식회사 | 복합양극활물질, 이를 채용한 양극과 리튬전지 및 그 제조방법 |
WO2014077277A1 (ja) * | 2012-11-13 | 2014-05-22 | 日揮触媒化成株式会社 | リチウム複合酸化物およびその製造方法、そのリチウム複合酸化物を含む二次電池用正極活物質、それを含む二次電池用正極、ならびにそれを正極として用いるリチウムイオン二次電池 |
KR101458676B1 (ko) * | 2012-11-26 | 2014-11-05 | 삼성정밀화학 주식회사 | 리튬이차전지용 양극 활물질, 이의 제조방법 및 이를 이용한 리튬이차전지 |
JP2014118335A (ja) * | 2012-12-18 | 2014-06-30 | Jgc Catalysts & Chemicals Ltd | リチウム複合酸化物およびその製造方法、そのリチウム複合酸化物を含む二次電池用正極活物質、それを含む二次電池用正極、ならびにそれを正極として用いるリチウムイオン二次電池 |
KR101785265B1 (ko) * | 2013-12-17 | 2017-10-16 | 삼성에스디아이 주식회사 | 복합 양극 활물질, 이를 포함하는 양극, 리튬 전지, 및 이의 제조방법 |
WO2016049014A1 (en) * | 2014-09-22 | 2016-03-31 | North Carolina Agricultural And Technical State University | Multi-phase structured cathode active material for lithium ion battery |
CN105161679B (zh) * | 2015-06-30 | 2018-01-16 | 中国人民解放军国防科学技术大学 | 富锂正极材料及其制备方法和应用 |
KR20170073217A (ko) * | 2015-12-18 | 2017-06-28 | 삼성전자주식회사 | 복합 양극 활물질, 그 제조방법, 이를 포함하는 양극 및 리튬 전지 |
KR20170115939A (ko) | 2016-04-08 | 2017-10-18 | 한양대학교 산학협력단 | 양극활물질, 그 제조 방법, 및 이를 포함하는 리튬이차전지 |
CN108091832B (zh) * | 2017-11-13 | 2020-05-19 | 天津力神电池股份有限公司 | 镍钴过渡金属氧化物锂离子电池用正极材料及制备方法 |
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Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006302880A (ja) | 2005-03-23 | 2006-11-02 | Matsushita Electric Ind Co Ltd | リチウムイオン二次電池およびその製造法 |
JP2008204806A (ja) | 2007-02-20 | 2008-09-04 | Sumitomo Metal Mining Co Ltd | 非水電解液二次電池用正極活物質およびその製造方法、ならびに、該正極活物質を用いた非水電解液二次電池 |
WO2012141258A1 (ja) | 2011-04-14 | 2012-10-18 | 戸田工業株式会社 | Li-Ni複合酸化物粒子粉末及びその製造方法、並びに非水電解質二次電池 |
JP2017536649A (ja) | 2014-10-02 | 2017-12-07 | エルジー・ケム・リミテッド | リチウム二次電池用正極活物質、この製造方法及びこれを含むリチウム二次電池 |
US20160181611A1 (en) | 2014-12-18 | 2016-06-23 | Unist Academy-Industry Research Corporation | Composite cathode active material, method of preparing the same, and cathode and lithium battery including the composite cathode active material |
CN105185962A (zh) | 2015-08-31 | 2015-12-23 | 宁波金和锂电材料有限公司 | 一种高镍正极材料及其制备方法和锂离子电池 |
JP2017107827A (ja) | 2015-11-27 | 2017-06-15 | 住友金属鉱山株式会社 | 非水系電解質二次電池用正極活物質とその製造方法、及び非水系電解質二次電池 |
JP2017188428A (ja) | 2016-03-30 | 2017-10-12 | Basf戸田バッテリーマテリアルズ合同会社 | 非水電解質二次電池用の正極活物質及びその製造方法、並びにそれを用いた非水電解質二次電池 |
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KR102217766B1 (ko) | 2021-02-22 |
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