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

来源：

CHEMISTRY OF MATERIALS | 2012年 / 24卷 / 17期

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

页码：3481 / 3485

页数：5

共 40 条

[1]

[Anonymous], 1990, The Diatom

[2] Deposition Mechanism and Properties of Thin Polydopamine Films for High Added Value Applications in Surface Science at the Nanoscale [J].