Title:
SIMPLE METHOD FOR REDUCING PH VALUE OF LITHIUM-ION BATTERY TERNARY ANODE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2017/000742
Kind Code:
A1
Abstract:
Disclosed is a simple method for reducing the pH value of a lithium-ion battery ternary anode material, belonging to the field of electrochemistry. The present invention uses an ascorbic-acid organic solution system to reduce the pH value of a lithium battery anode material. One of the features of the method is that the relationship between the densities of the ascorbic acid and the lithium-ion anode-material suspension satisfies 0.001B≤A≤0.015B, A of the formula being the ascorbic acid density, in units of g/L; B being the density of the anode material, in units of g/L; at the same time, the ascorbic acid density A must further satisfy the formula A≤0.8s (s being the solubility s of the ascorbic acid in a corresponding organic solvent, in units of g/100g). Another of the features of the method is that the number of times the lithium-ion anode material modified by ascorbic acid must be washed after centrifugal separation is small. The process of the present invention is simple and its costs are low; by means of adjusting VC density, an anode material having an improved discharge rate is obtained.
Inventors:
CHEN XIAO (CN)
LI TINGFENG (CN)
LV JINZHAO (CN)
ZHAO CHENGLONG (CN)
WANG YING (CN)
LI TINGFENG (CN)
LV JINZHAO (CN)
ZHAO CHENGLONG (CN)
WANG YING (CN)
Application Number:
PCT/CN2016/084414
Publication Date:
January 05, 2017
Filing Date:
June 01, 2016
Export Citation:
Assignee:
SHANDONG YUHUANG NEW ENERGY TECH CO LTD (CN)
International Classes:
H01M4/525; C01G53/00
Foreign References:
| CN105161717A | 2015-12-16 | |||
| CN103337614A | 2013-10-02 | |||
| CN104183821A | 2014-12-03 |
Attorney, Agent or Firm:
JINAN QUANCHENG PATENT & TRADEMARK OFFICE (CN)
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