Title:
NOVEL LITHIUM-ION BATTERY NEGATIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/021643
Kind Code:
A1
Abstract:
Provided are a novel lithium-ion battery negative electrode material and a preparation method therefor. The present method employs a one-step method to synthesize S-doped ZIF-67, then the S-doped ZIF-67 and a graphene oxide powder are co-carbonized under an inert gas, forming a ZIF-67-based composite material having a nano-polyhedron shape and a carbon skeleton protective layer on the outer layer. The prepared material is used in lithium-ion battery negative electrodes. The present method has simple steps and does not require expensive reaction equipment; the prepared lithium-ion battery has high energy density, good cycle performance, and excellent electrochemical performance.
Inventors:
YANG YONGJUN (CN)
QIN YU (CN)
QIN YU (CN)
Application Number:
PCT/CN2020/124579
Publication Date:
February 03, 2022
Filing Date:
October 29, 2020
Export Citation:
Assignee:
GUANGDONG KAIJIN NEW ENERGY TECH CORP LTD (CN)
International Classes:
H01M4/60; C08G83/00; H01M4/62; H01M10/0525
Foreign References:
| CN109461916A | 2019-03-12 | |||
| CN109817912A | 2019-05-28 | |||
| CN109713266A | 2019-05-03 | |||
| CN111370707A | 2020-07-03 | |||
| CN109841812A | 2019-06-04 | |||
| CN110299530A | 2019-10-01 | |||
| US20190152995A1 | 2019-05-23 | |||
| KR20190009541A | 2019-01-29 |
Attorney, Agent or Firm:
DONGGUAN QIXIN ZHANHUA INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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