Impact of thermal gas treatment on the surface modification of Li-rich Mn-based cathode materials for Li-ion batteries

Author:

Mellin Maximilian1,Liang Zhili1,Sclar Hadar2,Maiti Sandipan2,Píš Igor3ORCID,Nappini Silvia3ORCID,Magnano Elena34ORCID,Bondino Federica3ORCID,Napal Ilargi35,Winkler Robert1,Hausbrand Réne1,Hofmann Jan P.1ORCID,Alff Lambert1ORCID,Markovsky Boris2,Aurbach Doron2,Jaegermann Wolfram1,Cherkashinin Gennady1ORCID

Affiliation:

1. Department of Materials and Earth Sciences, Technical University of Darmstadt, 64287 Darmstadt, Germany

2. Department of Chemistry, Bar-llan University, Ramat-Gan 5290002, Israel

3. IOM-CNR Istituto Officina dei Materiali, Strada Statale 14, km 163,5 in Area Science Park, 34149 Basovizza, Trieste, Italy

4. Department of Physics, University of Johannesburg, PO Box 524, Auckland Park, 2006, Johannesburg, South Africa

5. Università degli Studi di Trieste, Physics Department, P.le Europa 1, 34127 Trieste, Italy

Abstract

Thermal double gases SO2 and NH3 treatment of 0.33Li2MnO3·0.67LiNi0.4Co0.2Mn0.4O2 cathode materials leads to a partial reduction of the Co3+ and Mn4+ ions via electron transfer from SO2 to the transition metal sites and surface modification which acts as protective layer.

Funder

Deutsche Forschungsgemeinschaft

Diamond Light Source

Publisher

Royal Society of Chemistry (RSC)

Subject

General Materials Science,Chemistry (miscellaneous)

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