WO2019095530A1 - 一种富锂氧化物正极材料及其制备方法以及一种锂离子电池 - Google Patents
一种富锂氧化物正极材料及其制备方法以及一种锂离子电池 Download PDFInfo
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Abstract
Description
Claims (10)
- 一种富锂氧化物正极材料,其特征在于,所述材料在温度为50~350℃之间进行X射线衍射分析,至少有一个晶胞参数(a,b,c)随着温度升高而减小。
- 根据权利要求1所述的富锂氧化物正极材料,其特征在于,所述富锂氧化物正极材料的化学通式为Li 1+xNi yCo zMn uM dO 2,其中,0<x≤0.2;0≤y≤0.35;0≤z≤0.35;0.5≤u≤0.9;0≤d≤0.5;M选自镍,钴,锰,铁、铝、钒、钛、锆,锡,铌,钼和钌等中一种或多种。
- 根据权利要求1所述的富锂氧化物正极材料,其特征在于,所述富锂氧化物晶体结构为层状结构、尖晶石结构、熔盐结构、单斜层状结构中的一种。
- 一种制备如权利要求1~3任意一项所述的富锂氧化物正极材料的方法,其特征在于,将所述材料在在对Li 0电势为4.5~4.8V之间,然后放电至2.0~4.4V进行电化学处理。
- 根据权利要求4所述的方法,其特征在于,所述电化学处理过程中的电流密度为25~250mA/g。
- 根据权利要求4所述,其特征在于,所述富锂氧化物正极材料的化学通式为Li 1+xNi yCo zMn uM dO 2,其中,0<x≤0.2;0≤y≤0.35;0≤z≤0.35;0.5≤u≤0.9;0≤d≤0.5;M为镍、钴、锰中的一种或多种,晶体结构为层状结构,所述电化学处理的方法为:将所述层状结构的富锂氧化物正极材料在对Li 0电势为4.6~4.8V之间充电,然后放电至2.0~3.2V,进行电化学处理的循环次数为1~300次。
- 根据权利要求4所述,其特征在于,所述富锂氧化物正极材料的化学通式为Li 1+xNi yCo zMn uM dO 2,其中,0<x≤0.2;0≤y≤0.35;0≤z≤0.35;0.5≤u≤0.9;0≤d≤0.5;M为铁、铝、钒、钛、锆、铌和钼中的一种或多种,晶体结构为尖晶石结构或熔盐结构,所述电化学处理的方法为:将所述尖晶石结构或熔盐结构的富锂氧化物正极材料在对Li 0电势为4.6~4.8V之间充电,然后放电至2.0~3.0V,进行电化学处理的循环次数为1~300 次。
- 根据权利要求4所述,其特征在于,所述富锂氧化物正极材料的化学通式为Li 1+xNi yCo zMn uM dO 2,其中,0<x≤0.2;0≤y≤0.35;0≤z≤0.35;0.5≤u≤0.9;0≤d≤0.5;M为钛、锆、锡和钌中的一种或多种,晶体结构为单斜层状结构;所述电化学处理方法为:将所述单斜层状结构的富锂氧化物正极材料在对Li 0电势为4.6~4.8V之间充电,然后放电至2.0~4.4V,进行电化学处理的循环次数为1~300次。
- 根据权利要求4所述的方法,其特征在于,将富锂氧化物正极材料进行电化学处理后,还包括进行热处理,所述热处理的方法为:在150~350℃条件下处理0.5~10小时。
- 一种锂离子电池,其特征在于,包括:正极、负极、隔膜和电解液,所述正极由权利要求1~3任意一项所述的富锂氧化物正极材料或由权利要求4~9任意一项所述的制备方法得到的富锂氧化物正极材料制备而成。
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AU2018368821A AU2018368821B2 (en) | 2017-11-20 | 2018-01-03 | Lithium-rich oxide positive electrode material, preparation method therefor, and lithium ion battery |
CA3076670A CA3076670A1 (en) | 2017-11-20 | 2018-01-03 | Lithium-rich oxide positive electrode material having lower defect density |
JP2020511927A JP6976009B2 (ja) | 2017-11-20 | 2018-01-03 | リチウムリッチ酸化物正極材料およびその製造方法、ならびにリチウムイオン電池 |
US16/758,808 US20210184212A1 (en) | 2017-11-20 | 2018-01-03 | Lithium-rich oxide positive electrode material, preparation method therefor, and lithium ion battery |
KR1020207008414A KR102405572B1 (ko) | 2017-11-20 | 2018-01-03 | 리튬-풍부 산화물 양극 재료, 이의 제조방법 및 리튬 이온 배터리 |
EP18878234.6A EP3716370A4 (en) | 2017-11-20 | 2018-01-03 | LITHIUM-RICH OXIDE POSITIVE ELECTRODE MATERIAL, PROCESS OF PREPARATION, AND LITHIUM-ION BATTERY |
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CN114062406B (zh) * | 2022-01-04 | 2022-03-22 | 中国工程物理研究院流体物理研究所 | 时间分辨多晶x射线衍射靶装置 |
CN114506879A (zh) * | 2022-01-13 | 2022-05-17 | 厦门大学 | 一种无钴富锂正极材料制备及其晶格氧活性调控的一体化方法 |
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KR20200042522A (ko) | 2020-04-23 |
JP6976009B2 (ja) | 2021-12-01 |
AU2018368821A1 (en) | 2020-02-27 |
TWI667837B (zh) | 2019-08-01 |
KR102405572B1 (ko) | 2022-06-07 |
US20210184212A1 (en) | 2021-06-17 |
EP3716370A1 (en) | 2020-09-30 |
AU2018368821B2 (en) | 2021-06-17 |
CA3076670A1 (en) | 2019-05-23 |
EP3716370A4 (en) | 2021-09-01 |
TW201924121A (zh) | 2019-06-16 |
CN107946571A (zh) | 2018-04-20 |
JP2020532076A (ja) | 2020-11-05 |
CN107946571B (zh) | 2021-04-23 |
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