JP7165271B2 - 正極活性材料、正極シート、電気化学エネルギー貯蔵装置及び装置 - Google Patents
正極活性材料、正極シート、電気化学エネルギー貯蔵装置及び装置 Download PDFInfo
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Description
2 上部ケース、
3 下部ケース、
4 バッテリモジュール、
5 電気化学エネルギー貯蔵装置。
Claims (8)
- 正極活性材料であって、
前記正極活性材料は、LixNiyCozMkMepOrAm又は表面に被覆層が設けられたLixNiyCozMkMepOrAmであり、但し、0.85≦x≦1.15、0<y<1、0<z<1、0<k<1、0≦p≦0.1、1≦r≦2、0≦m≦1、m+r≦2であり、Mは、Mn、Alから選択される1種又は2種であり、Meは、Zr、Zn、Cu、Cr、Mg、Fe、V、Ti、Sr、Sb、Y、W、Nbから選択される1種又は複数種であり、Aは、N、F、S、Clから選択される1種又は複数種であり、
前記正極活性材料は、単結晶又は準単結晶粒子であり、前記正極活性材料の粒径Dn10は、0.60μm≦Dn10≦1.00μmを満たし、D v 10は、0.5μm≦D v 10≦1.50μmを満たし、D v 50は、2.5μm≦D v 50≦6.0μmを満たし、
Dn10は、前記正極活性材料の個数累積分布率が10%に達したときに対応する粒径であり、D v 10は、前記正極活性材料の体積累積分布率が10%に達したときに対応する粒径であり、D v 50は、前記正極活性材料の体積累積分布率が50%に達したときに対応する粒径である、
ことを特徴とする正極活性材料。 - 前記被覆層における被覆元素は、Al、Ba、Zn、Ti、Co、W、Y、Si、Sn、B、Pから選択される1種又は複数種である、
ことを特徴とする請求項1に記載の正極活性材料。 - 前記正極活性材料の理論比表面積BET1と前記正極活性材料の真比表面積BET2とは、0.3≦(BET2-BET1)/BET1≦5.5を満たし、
但し、BET1=6/(ρ×Dv50)であり、
ρは、前記正極活性材料の真密度であって、単位がg/cm3である、
ことを特徴とする請求項1又は2に記載の正極活性材料。 - 前記正極活性材料の真比表面積BET2は、0.5m2/g~1.5m2/gである、
ことを特徴とする請求項1乃至3のいずれか1項に記載の正極活性材料。 - 前記正極活性材料の粒度微分分布曲線は、ピークを1つだけ有する、
ことを特徴とする請求項1乃至4のいずれか1項に記載の正極活性材料。 - 請求項1乃至5のいずれか1項に記載の正極活性材料を含むことを特徴とする正極シート。
- 請求項1乃至5のいずれか1項に記載の正極活性材料を含むことを特徴とする電気化学エネルギー貯蔵装置。
- 車両であって、請求項7に記載の電気化学エネルギー貯蔵装置を備えることを特徴とする装置。
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CN201811647026.XA CN110233259B (zh) | 2018-12-29 | 2018-12-29 | 正极活性材料、正极极片及电化学储能装置 |
CN201811647026.X | 2018-12-29 | ||
PCT/CN2019/129369 WO2020135767A1 (zh) | 2018-12-29 | 2019-12-27 | 正极活性材料、正极极片、电化学储能装置及装置 |
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CN112909238B (zh) | 2018-12-29 | 2022-04-22 | 宁德时代新能源科技股份有限公司 | 正极活性材料、正极极片及电化学储能装置 |
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2018
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- 2018-12-29 CN CN201811647026.XA patent/CN110233259B/zh active Active
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Patent Citations (2)
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JP2003109592A (ja) | 2001-09-28 | 2003-04-11 | Sanyo Electric Co Ltd | リチウム二次電池およびその製造方法 |
JP2018172255A (ja) | 2017-03-31 | 2018-11-08 | 住友化学株式会社 | リチウムニッケル複合酸化物の製造方法 |
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US11699789B2 (en) | 2023-07-11 |
CN112909238B (zh) | 2022-04-22 |
CN112909238A (zh) | 2021-06-04 |
EP3799165A1 (en) | 2021-03-31 |
US20220077464A1 (en) | 2022-03-10 |
WO2020135767A1 (zh) | 2020-07-02 |
JP2022515872A (ja) | 2022-02-22 |
CN110233259B (zh) | 2021-02-09 |
EP3799165A4 (en) | 2021-10-20 |
CN110233259A (zh) | 2019-09-13 |
US20230307635A1 (en) | 2023-09-28 |
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