Issue 31, 2016

Toward the design of high voltage magnesium–lithium hybrid batteries using dual-salt electrolytes

Abstract

We report a design of high voltage magnesium–lithium (Mg–Li) hybrid batteries through rational control of the electrolyte chemistry, electrode materials and cell architecture. Prototype devices with a structure of Mg–Li/LiFePO4 (LFP) and Mg–Li/LiMn2O4 (LMO) have been investigated. A Mg–Li/LFP cell using a dual-salt electrolyte 0.2 M [Mg2Cl2(DME)4][AlCl4]2 and 1.0 M LiTFSI exhibits voltages higher than 2.5 V (vs. Mg) and a high specific energy density of 246 W h kg−1 under conditions that are amenable for practical applications. The successful demonstrations reported here could be a significant step forward for practical hybrid batteries.

Graphical abstract: Toward the design of high voltage magnesium–lithium hybrid batteries using dual-salt electrolytes

Supplementary files

Article information

Article type
Communication
Submitted
31 Jan 2016
Accepted
26 Feb 2016
First published
26 Feb 2016

Chem. Commun., 2016,52, 5379-5382

Author version available

Toward the design of high voltage magnesium–lithium hybrid batteries using dual-salt electrolytes

Y. Cheng, D. Choi, K. S. Han, K. T. Mueller, J. Zhang, V. L. Sprenkle, J. Liu and G. Li, Chem. Commun., 2016, 52, 5379 DOI: 10.1039/C6CC00986G

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