Fumed Silica-Based Single-Ion Nanocomposite Electrolyte for Lithium Batteries

被引：49

作者：

Zhao, Hui ^{[1
]}

Jia, Zhe ^{[1
]}

Yuan, Wen ^{[1
]}

Hu, Heyi ^{[2
]}

Fu, Yanbao ^{[1
]}

Baker, Gregory L. ^{[2
]}

Liu, Gao ^{[1
]}

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Energy Technol Area, Energy Storage & Distributed Resources Div, Berkeley, CA 94720 USA

[2] Michigan State Univ, Dept Chem, E Lansing, MI 48824 USA

来源：

ACS APPLIED MATERIALS & INTERFACES | 2015年 / 7卷 / 34期

关键词：

polymer-grafted silica nanoparticle; transference number; solid-state electrolyte; lithium battery; poly(ethylene oxide); TRANSFORM-INFRARED-SPECTROSCOPY; ELECTROSTATIC SHIELD MECHANISM; CONDUCTIVE POLYMER BINDER; TRANSFERENCE NUMBER; DENDRITE GROWTH; HYBRID FILMS; PERFORMANCE; LIQUID; NANOPARTICLES; ANODES;

D O I：

10.1021/acsami.5b05419

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A composite lithium electrolyte composed of polyelectrolyte-grafted nanoparticles and polyethylene glycol dimethyl ether (PEGDME) is synthesized and characterized. Polyanions immobilized by the silica nanopartides have reduced anion mobility. Composite nanopartides grafted by poly(lithium 4-styrenesulfonate) only have moderate conductivity at 60 degrees C. Almost an order increase of the conductivity to,similar to 10(-6) S/cm is achieved by co-polymerization of the poly(ethylene oxide) methacrylate with sodium 4-styrenesulfonate, which enhances dissociation between lithium cation and polyanion and facilitates lithium ion transfer from the inner part of the polyelectrolyte layer. This composite electrolyte has the potential to suppress lithium dendrite growth and enable the use of lithium metal anode in rechargeable batteries.

引用

页码：19335 / 19341

页数：7

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