Title:
COMPOSITE NANOFIBER SEPARATOR WITH THERMAL SHUTDOWN FUNCTION, PREPARATION METHOD THEREFOR AND ENERGY STORAGE COMPONENTS
Document Type and Number:
WIPO Patent Application WO/2016/095771
Kind Code:
A1
Abstract:
The present invention provides a composite nanofiber separator with a thermal shutdown function, a preparation method therefor and energy storage components, and relates to lithium-ion batteries, lithium-sulphur batteries, supercapacitors, lead-acid batteries, alkaline batteries, zinc-air batteries, sodium-ion batteries and fiber separators thereof. The composite nanofiber separator with a thermal shutdown function is of a non-woven fabric structure and is formed by cross-linking a fibrillated cellulose nanofiber and at least one low-melting-point polymer nanofiber, the low-melting-point polymer nanofiber being a polyolefin- and polyester-containing nanofiber. The thickness of the composite nanofiber separator with a thermal shutdown function may range from 10 μm to 80 μm, and the shutdown temperature ranges from 130°C to 170°C. The nanofiber separator does not shrink after shutdown, and the heat shrinkage rate is less than 2％ after heating at 200°C for 30 min. The composite nanofiber separator can achieve a thermal shutdown function, thereby preventing the direct contact between the positive and negative electrodes of a battery due to thermal inertia and significantly improving the safety of the aforementioned energy storage components.
Inventors:
XUAN XUAN (CN)
XIE MING (CN)
XIE MING (CN)
Application Number:
PCT/CN2015/097248
Publication Date:
June 23, 2016
Filing Date:
December 14, 2015
Export Citation:
Assignee:
NINGBO ATMK LITHIUM ION TECHNOLOGIES INC (CN)
International Classes:
H01G11/52; H01M50/403; H01M50/409; H01M50/489
Foreign References:
| CN104485437A | 2015-04-01 | |||
| CN103824988A | 2014-05-28 | |||
| CN1636286A | 2005-07-06 | |||
| CN103943806A | 2014-07-23 | |||
| CN101317240A | 2008-12-03 | |||
| JP2012199034A | 2012-10-18 |
Attorney, Agent or Firm:
BEIJING BRIGHT & RIGHT LAW FIRM (CN)
北京华沛德权律师事务所 (CN)
北京华沛德权律师事务所 (CN)
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