Title:
LITHIUM ION BATTERY
Document Type and Number:
WIPO Patent Application WO/2024/011702
Kind Code:
A1
Abstract:
The present application relates to the technical field of battery manufacturing, and in particular provides a lithium ion battery. The lithium ion battery comprises a diaphragm, a positive electrode sheet, a negative electrode sheet and an electrolyte. The coating of the positive electrode sheet comprises a positive electrode material. The positive electrode material comprises a positive electrode active material, a conductive agent and a binder, the positive electrode active material comprising at least one of lithium iron phosphate and lithium manganate. The coating of the positive electrode sheet further comprises a negative electrode film forming additive, and/or the electrolyte comprises a negative electrode film forming additive, the negative electrode film forming additive comprising at least one of elemental sulfur and metal sulfide. The electrolyte comprises a film forming solvent. The lithium ion battery provided by the present application can effectively improve the cycle performance of the lithium ion battery using lithium iron phosphate or lithium manganate as a positive electrode active material.
Inventors:
TIAN MENGYU (CN)
HUANG XUEJIE (CN)
YAN YONG (CN)
HUANG XUEJIE (CN)
YAN YONG (CN)
Application Number:
PCT/CN2022/112111
Publication Date:
January 18, 2024
Filing Date:
August 12, 2022
Export Citation:
Assignee:
SONGSHAN LAKE MAT LAB (CN)
INST PHYSICS CAS (CN)
INST PHYSICS CAS (CN)
International Classes:
H01M10/42; H01M4/13; H01M10/0525; H01M10/0567
Foreign References:
| CN114583296A | 2022-06-03 | |||
| CN107293797A | 2017-10-24 | |||
| US20150056500A1 | 2015-02-26 | |||
| CN112331914A | 2021-02-05 | |||
| CN113506914A | 2021-10-15 | |||
| CN109286008A | 2019-01-29 |
Attorney, Agent or Firm:
CHOFN INTELLECTUAL PROPERTY (CN)
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