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Adv Mater. 2017 Mar;29(10). doi: 10.1002/adma.201604549. Epub 2017 Jan 5.

In Situ Engineering of the Electrode-Electrolyte Interface for Stabilized Overlithiated Cathodes.

Author information

1
Department of Mechanical Engineering, University of Colorado at Boulder, Boulder, CO, 80309, USA.
2
SiILion, Inc., Broomfield, CO, 80020, USA.
3
Department of Chemistry, University of Colorado at Boulder, Boulder, CO, 80309, USA.
4
Department of Material Science and Engineering, Seoul National University, Seoul, 151-742, South Korea.
5
Energy Storage and Distributed Resources Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
6
Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA.
7
Center of Chemical and Materials Science, National Renewable Energy Laboratory, Golden, CO, 80401, USA.
8
Joint School of Nanoscience and Nanoengineering, North Carolina A&T State University, Greensboro, NC, 27411, USA.

Abstract

The first-ever demonstration of stabilized Si/lithium-manganese-rich full cells, capable of retaining >90% energy over early cycling and >90% capacity over more than 750 cycles at the 1C rate (100% depth-of-discharge), is made through the utilization of a modified ionic-liquid electrolyte capable of forming a favorable cathode-electrolyte interface.

KEYWORDS:

Li-ion; cathode; interfaces; ionic liquids; lithium-manganese-rich

PMID:
28054387
DOI:
10.1002/adma.201604549
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