Title:
LITHIUM ION BATTERY
Document Type and Number:
WIPO Patent Application WO/2022/042372
Kind Code:
A1
Abstract:
The present invention relates to the field of batteries. Specifically disclosed is a lithium ion battery. The lithium ion battery comprises a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte. An active material of the positive electrode includes one or more of LiNixCoyMzO2, LiNiMxO4, and LiNi0.5Mn 1.5O4, where M is selected from Mn or Al, and 0 ≤ x ≤ 1, 0 ≤ y ≤ 1, 0 ≤ z ≤ 1, and x + y + z ≤ 1. The non-aqueous electrolyte comprises an organic solvent, a lithium salt, and a compound provided in the present invention. The lithium ion battery has a charge cut-off voltage of from 4.2 V to 5.2 V. The lithium ion battery has good high-temperature storage performance and good cycle performance, and is safe to use.
Inventors:
QIAN YUNXIAN (CN)
HU SHIGUANG (CN)
HUANG XIONG (CN)
LIU ZHONGBO (CN)
HU SHIGUANG (CN)
HUANG XIONG (CN)
LIU ZHONGBO (CN)
Application Number:
PCT/CN2021/113008
Publication Date:
March 03, 2022
Filing Date:
August 17, 2021
Export Citation:
Assignee:
SHENZHEN CAPCHEM TECHNOLOGY CO LTD (CN)
International Classes:
H01M10/0525; H01M10/0567
Domestic Patent References:
| WO2017061102A1 | 2017-04-13 |
Foreign References:
| CN112151753A | 2020-12-29 | |||
| CN112151748A | 2020-12-29 | |||
| CN112803067A | 2021-05-14 | |||
| CN111129498A | 2020-05-08 | |||
| CN110931869A | 2020-03-27 | |||
| CN106252710A | 2016-12-21 | |||
| CN109950621A | 2019-06-28 | |||
| CN107086324A | 2017-08-22 | |||
| KR20180076489A | 2018-07-06 | |||
| KR20180136655A | 2018-12-26 |
Other References:
LEE SANG HYUN, SUKEON YOON, EUI-HYUNG HWANG, YOUNG-GIL KWON, YOUNG-GI LEE, KUK YOUNG CHO: "[4, 4′-bi(1, 3, 2-dioxathiolane)] 2, 2′-dioxide: A novel cathode additive for high-voltage performance in lithium ion batteries", JOURNAL OF POWER SOURCES, pages 112 - 118, XP055778280
Attorney, Agent or Firm:
SHENZHEN ZHONGDING INTELLECTUAL PROPERTY AGENCY (CN)
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