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CN103700836A - 单晶三元正极材料ZnO/LiNi0.5Co0.2Mn0.3O2的制备方法 - Google Patents

单晶三元正极材料ZnO/LiNi0.5Co0.2Mn0.3O2的制备方法 Download PDF

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Publication number
CN103700836A
CN103700836A CN201310693367.1A CN201310693367A CN103700836A CN 103700836 A CN103700836 A CN 103700836A CN 201310693367 A CN201310693367 A CN 201310693367A CN 103700836 A CN103700836 A CN 103700836A
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王聪
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JIANGSU KING LITHIUM CELL CO Ltd
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JIANGSU KING LITHIUM CELL CO Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
    • H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
    • H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

本发明涉及一种锂电池单晶三元正极材料ZnO/LiNi0.5Co0.2Mn0.3O2的制备方法。该方法包括以下步骤：1）称取碳酸锂和523型三元前躯体[Ni0.5Co0.2Mn0.3]，在球磨罐中混料；2）混料后，在空气气氛中烧结；3）取出后破碎，得到半成品；4）将半成品和氧化锌在球磨罐中混料；5）混料后，在空气气氛中烧结；6）取出后破碎，得到ZnO/LiNi0.5Co0.2Mn0.3O2材料。本发明采用高温固相法制备ZnO包覆改性的单晶LiNi0.5Co0.2Mn0.3O2正极材料，能够有效提高单晶三元正极材料的容量，同时保持较好的倍率性能。

Description

单晶三元正极材料ZnO/LiNi0.5Co0.2Mn0.3O2的制备方法
技术领域
本发明涉及锂电极正极材料的制备方法，具体是一种单晶三元正极材料ZnO/LiNi0.5Co0.2Mn0.3O2的制备方法。
背景技术
作为锂电池正极材料，普通LiNi0.5Co0.2Mn0.3O2材料的高温性能、安全性能和价格等方面均有优势，但首次充放电效率不高，高充放电电压下与电解液发生副反应，倍率性能较差；单晶LiNi0.5Co0.2Mn0.3O2材料高温性能较好，与电解液发生副反应减少，倍率性能较好，但充放电容量较低。
发明内容
本发明所要解决的技术问题是，提供一种能够改善单晶LiNi0.5Co0.2Mn0.3O2材料容量性能的单晶三元正极材料ZnO/LiNi0.5Co0.2Mn0.3O2的制备方法。
本发明的单晶三元正极材料ZnO/LiNi0.5Co0.2Mn0.3O2的制备方法包括以下步骤：
1）按Li:[Ni0.5Co0.2Mn0.3]=1.075的摩尔比称取碳酸锂和523型三元前躯体[Ni0.5Co0.2Mn0.3]，在球磨罐中混料；
2）混料后，在空气气氛中以2.5小时升到735℃,4.5小时升到980℃，980℃下保温10小时的温度曲线进行烧结；
3）取出后破碎，得到单晶LiNi0.5Co0.2Mn0.3O2材料，作为半成品；
4）按半成品：氧化锌=1000:3.842的摩尔比称取各试剂，在球磨罐中混料；
5）混料后，在空气气氛中以2小时升到600℃，3.5小时升到800℃，800℃下保温10小时的温度曲线进行烧结；
6）取出后破碎，得到ZnO/LiNi0.5Co0.2Mn0.3O2材料。
本发明采用高温固相法制备ZnO包覆改性的单晶LiNi0.5Co0.2Mn0.3O2正极材料，能够有效提高单晶三元正极材料的容量，同时保持较好的倍率性能。
具体实施方式
本发明实施例的方法包括以下步骤：
1）按Li:[Ni0.5Co0.2Mn0.3]=1.075的摩尔比称取碳酸锂和523型三元前躯体[Ni0.5Co0.2Mn0.3]，在球磨罐中混料4小时；
2）混料后，在空气气氛中以2.5小时升到735℃,4.5小时升到980℃，980℃下保温10小时的温度曲线进行烧结；
3）取出后破碎，过200目筛，得到单晶LiNi0.5Co0.2Mn0.3O2材料，作为半成品；
4）按半成品：氧化锌=1000:3.842的摩尔比称取各试剂，在球磨罐中混料3小时；
5）混料后，在空气气氛中以2小时升到600℃，3.5小时升到800℃，800℃下保温10小时的温度曲线进行烧结；
6）取出后破碎，过200目筛，得到ZnO/LiNi0.5Co0.2Mn0.3O2材料。
本发明实施例制得的产品特征检测结果如下：
1、颗粒大小分布比较均匀，平均粒径约为8μm；
2、用金属锂做参考电极，放电的平均电压在3.7伏左右；
3、4.25V扣电0.2C初次放电容量约157mAh/g；
4、充放电性能。

Claims (1)

1.一种单晶三元正极材料ZnO/LiNi0.5Co0.2Mn0.3O2的制备方法，其特征是：包括以下步骤，
1）按Li:[Ni0.5Co0.2Mn0.3]=1.075的摩尔比称取碳酸锂和523型三元前躯体[Ni0.5Co0.2Mn0.3]，在球磨罐中混料；
2）混料后，在空气气氛中以2.5小时升到735℃,4.5小时升到980℃，980℃下保温10小时的温度曲线进行烧结；
3）取出后破碎，得到单晶LiNi0.5Co0.2Mn0.3O2材料，作为半成品；
4）按半成品：氧化锌=1000:3.842的摩尔比称取各试剂，在球磨罐中混料；
5）混料后，在空气气氛中以2小时升到600℃，3.5小时升到800℃，800℃下保温10小时的温度曲线进行烧结；
6）取出后破碎，得到ZnO/LiNi0.5Co0.2Mn0.3O2材料。
CN201310693367.1A 2013-12-18 2013-12-18 单晶三元正极材料ZnO/LiNi0.5Co0.2Mn0.3O2的制备方法 Pending CN103700836A (zh)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105355906A (zh) * 2015-11-28 2016-02-24 中信大锰矿业有限责任公司大新锰矿分公司 一种球形镍钴锰酸锂正极材料的制备方法
CN105428640A (zh) * 2015-12-04 2016-03-23 中信国安盟固利电源技术有限公司 一种核壳结构三元正极材料及其制备方法
CN107078294A (zh) * 2014-11-18 2017-08-18 住友金属矿山株式会社 非水系电解质二次电池用正极活性物质、其制造方法和使用其的非水系电解质二次电池
CN107799741A (zh) * 2017-09-28 2018-03-13 华南理工大学 一种氧化锌改性的锂离子电池镍钴锰三元正极材料的制备方法
US20190296324A1 (en) * 2017-10-20 2019-09-26 Unist(Ulsan National Institute Of Science And Technology) Positive active material for rechargeable lithium battery, method of preparing the same, electrode including the same, and rechargeable lithium battery including the electrode
CN111354926A (zh) * 2018-12-22 2020-06-30 中天新兴材料有限公司 镍钴锰酸锂复合材料及其制备方法
CN112047395A (zh) * 2020-09-10 2020-12-08 江西智锂科技有限公司 一种制备内核为锂镍钴铝复合氧化物锂电池正极材料的方法
EP4250404A3 (en) * 2017-11-22 2023-12-06 LG Energy Solution, Ltd. Positive electrode active material for lithium secondary battery and manufacturing method therefor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103094557A (zh) * 2013-02-25 2013-05-08 天津工业大学 一种表面包覆ZnO的锂离子电池正极材料的制备方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
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CN103094557A (zh) * 2013-02-25 2013-05-08 天津工业大学 一种表面包覆ZnO的锂离子电池正极材料的制备方法

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107078294B (zh) * 2014-11-18 2020-06-30 住友金属矿山株式会社 非水系电解质二次电池用正极活性物质、其制造方法和使用其的非水系电解质二次电池
CN107078294A (zh) * 2014-11-18 2017-08-18 住友金属矿山株式会社 非水系电解质二次电池用正极活性物质、其制造方法和使用其的非水系电解质二次电池
CN105355906A (zh) * 2015-11-28 2016-02-24 中信大锰矿业有限责任公司大新锰矿分公司 一种球形镍钴锰酸锂正极材料的制备方法
CN105428640A (zh) * 2015-12-04 2016-03-23 中信国安盟固利电源技术有限公司 一种核壳结构三元正极材料及其制备方法
CN105428640B (zh) * 2015-12-04 2018-07-06 中信国安盟固利电源技术有限公司 一种核壳结构三元正极材料及其制备方法
CN107799741A (zh) * 2017-09-28 2018-03-13 华南理工大学 一种氧化锌改性的锂离子电池镍钴锰三元正极材料的制备方法
US20190296324A1 (en) * 2017-10-20 2019-09-26 Unist(Ulsan National Institute Of Science And Technology) Positive active material for rechargeable lithium battery, method of preparing the same, electrode including the same, and rechargeable lithium battery including the electrode
US10790498B2 (en) * 2017-10-20 2020-09-29 Unist (Ulsan National Institute Of Science And Technology) Positive active material for rechargeable lithium battery, method of preparing the same, electrode including the same, and rechargeable lithium battery including the electrode
EP4250404A3 (en) * 2017-11-22 2023-12-06 LG Energy Solution, Ltd. Positive electrode active material for lithium secondary battery and manufacturing method therefor
US11909045B2 (en) 2017-11-22 2024-02-20 Lg Energy Solution, Ltd. Positive electrode active material for lithium secondary battery and preparation method thereof
US11967714B2 (en) 2017-11-22 2024-04-23 Lg Energy Solution, Ltd. Positive electrode active material for lithium secondary battery and preparation method thereof
US12249712B2 (en) 2017-11-22 2025-03-11 Lg Energy Solution, Ltd. Positive electrode active material for lithium secondary battery and preparation method thereof
CN111354926A (zh) * 2018-12-22 2020-06-30 中天新兴材料有限公司 镍钴锰酸锂复合材料及其制备方法
CN112047395A (zh) * 2020-09-10 2020-12-08 江西智锂科技有限公司 一种制备内核为锂镍钴铝复合氧化物锂电池正极材料的方法

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Application publication date: 20140402