Nanocomposite polymer electrolyte for rechargeable magnesium batteries

被引：134

作者：

Shao, Yuyan ^{[1
]}

Rajput, Nay Nidhi ^{[2
]}

Hu, Jianzhi ^{[1
]}

Hu, Mary ^{[1
]}

Liu, Tianbiao ^{[1
]}

Wei, Zhehao ^{[1
,3
]}

Gu, Meng ^{[1
]}

Deng, Xuchu ^{[1
]}

Xu, Suochang ^{[1
]}

Han, Kee Sung ^{[1
]}

Wang, Jiulin ^{[1
]}

Nie, Zimin ^{[1
]}

Li, Guosheng ^{[1
]}

Zavadil, Kevin R. ^{[4
]}

Xiao, Jie ^{[1
]}

Wang, Chongmin ^{[1
]}

Henderson, Wesley A. ^{[1
]}

Zhang, Ji-Guang ^{[1
]}

Wang, Yong ^{[1
,3
]}

Mueller, Karl T. ^{[1
,5
]}

Persson, Kristin ^{[2
]}

Liu, Jun ^{[1
]}

机构：

[1] Pacific NW Natl Lab, Richland, WA 99352 USA

[2] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[3] Washington State Univ, Gene & Linda Voiland Sch Chem Engn & Bioengn, Pullman, WA 99164 USA

[4] Sandia Natl Labs, Albuquerque, NM 87185 USA

[5] Penn State Univ, Dept Chem, University Pk, PA 16802 USA

来源：

NANO ENERGY | 2015年 / 12卷

关键词：

Energy storage; Battery; Nanocomposite; Polymer electrolyte; Magnesium; Rechargeable; WIDE ELECTROCHEMICAL WINDOWS; REVERSIBLE MAGNESIUM; IONIC-CONDUCTIVITY; STRUCTURAL-ANALYSIS; CATHODE MATERIAL; COBALT SILICATE; LITHIUM METAL; MG BATTERIES; BORATE ESTER; LEWIS-ACID;

D O I：

10.1016/j.nanoen.2014.12.028

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：

Nanocomposite polymer electrolytes present new opportunities for rechargeable magnesium batteries. However, few polymer electrolytes have demonstrated reversible Mg deposition/ dissolution and those that have still contain volatile liquids such as tetrahydrofuran (THF). In this work, we report a nanocomposite polymer electrolyte based on poly(ethylene oxide) (PEO), Mg(BH4)(2) and MgO nanoparticles for rechargeable Mg batteries. Cells with this electrolyte have a high coulombic efficiency of 98% for Mg plating/stripping and a high cycling stability. Through combined experiment-modeling investigations, a correlation between improved solvation of the salt and solvent chain length, chelation and oxygen denticity is established. Following the same trend, the nanocomposite polymer electrolyte is inferred to enhance the dissociation of the salt Mg(BH4)(2) and thus improve the electrochemical performance. The insights and design metrics thus obtained may be used in nanocomposite electrolytes for other multivalent systems. Published by Elsevier Ltd.

引用

页码：750 / 759

页数：10

共 95 条

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