A weakly ion pairing electrolyte designed for high voltage magnesium batteries

Author:

Li Chang12ORCID,Guha Rishabh D.3,Shyamsunder Abhinandan12,Persson Kristin A.245,Nazar Linda F.12ORCID

Affiliation:

1. Department of Chemistry and the Waterloo Institute for Nanotechnology, University of Waterloo, Ontario N2L 3G1, Canada

2. Joint Center for Energy Storage Research, Argonne National Laboratory, Lemont, Illinois 60439, USA

3. Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA

4. Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA

5. Department of Materials Science and Engineering, UC Berkeley, Berkeley, California 94720, USA

Abstract

We report a solvent-designed Mg(TFSI)2 electrolyte, which facilitates ion pair dissociation, nanoscale Mg nucleation/growth, and dendrite-free Mg plating/stripping at 2 mA h cm−2, enabling full cell operation up to 3.5 V at a 2C rate for 400 cycles.

Funder

Basic Energy Sciences

Natural Sciences and Engineering Research Council of Canada

Publisher

Royal Society of Chemistry (RSC)

Subject

Pollution,Nuclear Energy and Engineering,Renewable Energy, Sustainability and the Environment,Environmental Chemistry

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