Title:
LITHIUM ION BATTERY DIAPHRAGM
Document Type and Number:
WIPO Patent Application WO/2021/068864
Kind Code:
A1
Abstract:
A lithium ion battery diaphragm, comprising a substrate and a modification layer, wherein the modification layer is an inorganic coating; the inorganic coating is composed of a first particle layer and a second particle layer; the first particle layer has a first particle size r, and the second particle layer has a second particle size r', wherein the particle sizes r and r' satisfy the following relationship: formula (aa); first particles are at least one or more of boehmite, aluminum oxide, titanium oxide, calcium oxide, zinc oxide, copper oxide, and manganese oxide; and second particles are natural organic particles, and are prepared from natural organic shells, wherein the natural organic shells are selected from eggshells and seashells. The first particle layer and the second particle layer are combined to form an integrated lithium battery diaphragm material, and an inorganic material does not fall off.
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Inventors:
WANG HAIHUI (CN)
XUE JIAN (CN)
WANG SUQING (CN)
XUE JIAN (CN)
WANG SUQING (CN)
Application Number:
PCT/CN2020/119856
Publication Date:
April 15, 2021
Filing Date:
October 07, 2020
Export Citation:
Assignee:
UNIV SOUTH CHINA TECH (CN)
International Classes:
H01M2/16
Foreign References:
| CN110660951A | 2020-01-07 | |||
| CN110752338A | 2020-02-04 | |||
| CN104205415A | 2014-12-10 | |||
| CN110148700A | 2019-08-20 | |||
| CN107342387A | 2017-11-10 | |||
| JP2014180821A | 2014-09-29 | |||
| CN105609688A | 2016-05-25 | |||
| CN104868081A | 2015-08-26 | |||
| KR20170109945A | 2017-10-10 |
Attorney, Agent or Firm:
GUANG ZHOU ZHONG JIAN ZHI SHI CHAN QUAN DAI LI SHI WU SUO (TE SHU PU TONG HE HUO) (CN)
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