Title:
PREPARATION METHOD FOR MODIFIED GRAPHITE ELECTRODE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2022/127046
Kind Code:
A1
Abstract:
Disclosed is a preparation method for a modified graphite electrode material, comprising the following preparation steps: adding nitric acid solution into graphite, then adding a cationic polymer, and reacting in a constant temperature water bath while stirring to obtain a first reactant; sequentially introducing an ionic liquid and carbonyl sulfide into the first reactant to obtain a second reactant; washing the second reactant using deionized water, placing in a drying oven for curing treatment, ball milling using a ball mill, then placing the ball-milled powder in a high-temperature heating furnace for carbonization treatment to obtain a third reactant; mixing the third reactant and a conductive agent, grinding, then dispersing in anhydrous ethanol, adding an adhesive and potassium oxalate, stirring evenly, drying, and pelleting to obtain a modified graphite electrode material. The modified graphite electrode material obtained in the present invention has good charge and discharge performance and cycle performance.
Inventors:
PENG FEI (CN)
YANG YONGJUN (CN)
YANG YONGJUN (CN)
Application Number:
PCT/CN2021/098368
Publication Date:
June 23, 2022
Filing Date:
June 04, 2021
Export Citation:
Assignee:
GUANGDONG KAIJIN NEW ENERGY TECH CO LTD (CN)
International Classes:
H01M4/36
Foreign References:
| CN112599741A | 2021-04-02 | |||
| CN108428864A | 2018-08-21 | |||
| CN103474633A | 2013-12-25 | |||
| US20160233487A1 | 2016-08-11 |
Other References:
YAN YANG, YIN YA-XIA, XIN SEN, GUO YU-GUO, WAN LI-JUN: "Ionothermal synthesis of sulfur-doped porous carbons hybridized with graphene as superior anode materials for lithium-ion batteries", CHEMICAL COMMUNICATIONS, ROYAL SOCIETY OF CHEMISTRY, UK, vol. 48, no. 86, 1 January 2012 (2012-01-01), UK , pages 10663, XP055942996, ISSN: 1359-7345, DOI: 10.1039/c2cc36234a
Attorney, Agent or Firm:
DONGGUAN HENGCHENG IP AGENCY CO., LTD. (CN)
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