Title:
METHOD FOR PREPARING HARD CARBON NEGATIVE ELECTRODE OF LITHIUM/SODIUM ION BATTERY BY USING BIOMASS CHARCOAL
Document Type and Number:
WIPO Patent Application WO/2023/050466
Kind Code:
A1
Abstract:
The present application provides a method for preparing a hard carbon negative electrode of a lithium/sodium ion battery by using biomass charcoal, comprising the following steps: S1, pre-treating biomass charcoal; S2, preparing a precursor material; S3, carrying out pyrolysis and carbonization, performing modification by using the biomass charcoal, setting a carbonization temperature and a carbonization time, and controlling a cooling rate, so that after the obtained biomass carbon is carbonized, amorphous carbon is generated, the graphitization degree is low, the surface defects are few, the charge-discharge specific capacity is larger, and the performance is stable in a cyclic charging and discharging process. Moreover, the process of the present application is relatively simple, special complex processes are reduced, the morphology does not need to be specially regulated and controlled, and the method is suitable for large-scale industrial production; the product has relatively good performance and has certain competitive advantages.
Inventors:
CHEN YONG (CN)
ZHENG HENG (CN)
MO YAN (CN)
CAO BOKAI (CN)
ZHENG HENG (CN)
MO YAN (CN)
CAO BOKAI (CN)
Application Number:
PCT/CN2021/123168
Publication Date:
April 06, 2023
Filing Date:
October 12, 2021
Export Citation:
Assignee:
UNIV HAINAN (CN)
International Classes:
H01M4/133
Foreign References:
| CN109921018A | 2019-06-21 | |||
| CN111847418A | 2020-10-30 | |||
| CN110723736A | 2020-01-24 | |||
| CN111564630A | 2020-08-21 | |||
| CN109678130A | 2019-04-26 | |||
| CN108439363A | 2018-08-24 | |||
| KR20210060754A | 2021-05-27 |
Attorney, Agent or Firm:
HAINAN HEIP INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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