Mussel- and Diatom-Inspired Silica Coating on Separators Yields Improved Power and Safety in Li-Ion Batteries

被引:186
作者
Kang, Sung Min [5 ]
Ryou, Myung-Hyun [1 ]
Choi, Jang Wook [1 ,2 ]
Lee, Haeshin [2 ,3 ,4 ]
机构
[1] Korea Adv Inst Sci & Technol, Grad Sch EEWS WCU, Taejon 305701, South Korea
[2] Korea Adv Inst Sci & Technol, KAIST Inst Nanocentury, Taejon 305701, South Korea
[3] Korea Adv Inst Sci & Technol, Dept Chem, Taejon 305701, South Korea
[4] Korea Adv Inst Sci & Technol, Grad Sch Nanosci & Technol WCU, Taejon 305701, South Korea
[5] Pukyong Natl Univ, Dept Marine Biomat & Aquaculture, Pusan 608737, South Korea
基金
新加坡国家研究基金会;
关键词
biomimetics; silica; surface modification; Li-ion battery; POLYETHYLENE SEPARATORS; THERMAL-STABILITY; ENCAPSULATION; BIOSILICA; CELLS; FILMS;
D O I
10.1021/cm301967f
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In this study, we developed an integrative bioinspired approach that improves the power and safety of Li-ion batteries (LIBs) by the surface modification of polyethylene (PE) separators. The approach involves the synthesis of a diatom-inspired silica layer on the surface of the PE separator, and the adhesion of the silica layer was inspired by mussels. The mussel- and diatom-inspired silica coating increased the electrolyte wettability of the separator, resulting in enhanced power and improved thermal shrinkage, resulting safer LIBs. Furthermore, the overall processes are environmentally friendly and cost-effective. The process described herein is the first example of the use of diatom-inspired silica in practically important energy storage applications. The improved wetting and thermal properties are critical, particularly for large-scale battery applications.
引用
收藏
页码:3481 / 3485
页数:5
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