title: A Long-Life Lithium Ion Battery with Enhanced Electrode/Electrolyte Interface by Using an Ionic Liquid Solution.
abstract: In this paper, we report an advanced long-life lithium ion battery, employing a Pyr14 TFSI-LiTFSI non-flammable ionic liquid (IL) electrolyte, a nanostructured tin carbon (Sn-C) nanocomposite anode, and a layered LiNi1/3 Co1/3 Mn1/3 O2 (NMC) cathode. The IL-based electrolyte is characterized in terms of conductivity and viscosity at various temperatures, revealing a Vogel-Tammann-Fulcher (VTF) trend. Lithium half-cells employing the Sn-C anode and NMC cathode in the Pyr14 TFSI-LiTFSI electrolyte are investigated by galvanostatic cycling at various temperatures, demonstrating the full compatibility of the electrolyte with the selected electrode materials. The NMC and Sn-C electrodes are combined into a cathode-limited full cell, which is subjected to prolonged cycling at 40 °C, revealing a very stable capacity of about 140 mAh g(-1) and retention above 99 % over 400 cycles. The electrode/electrolyte interface is further characterized through a combination of electrochemical impedance spectroscopy (EIS) and scanning electron microscopy (SEM) investigations upon cell cycling. The remarkable performances reported here definitively indicate that IL-based lithium ion cells are suitable batteries for application in electric vehicles.
authors.affiliation: Department of Chemistry, Sapienza University, Piazzale Aldo Moro 5, 00185, Rome, Italy.|Technische Universität Berlin, Research Center of Microperipheric Technologies, Gustav-Meyer-Allee 25, 13355, Berlin, Germany.
authors.forename: Giuseppe Antonio
authors.initials: GA
authors.lastname: Elia
authors.affiliation: Helmholtz Institute Ulm (HIU), Helmholtzstrasse 11, 89081, Ulm, Germany.|Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021, Karlsruhe, Germany.
authors.forename: Ulderico
authors.initials: U
authors.lastname: Ulissi
authors.affiliation: Helmholtz Institute Ulm (HIU), Helmholtzstrasse 11, 89081, Ulm, Germany.|Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021, Karlsruhe, Germany.|Institute of Physical Chemistry, University of Muenster, Corrensstr. 28/30, 48149, Muenster, Germany.
authors.forename: Franziska
authors.initials: F
authors.lastname: Mueller
authors.affiliation: BMW Group, Petuelring 130, 80788, Munich, Germany.
authors.forename: Jakub
authors.initials: J
authors.lastname: Reiter
authors.affiliation: BMW Group, Petuelring 130, 80788, Munich, Germany.
authors.forename: Nikolaos
authors.initials: N
authors.lastname: Tsiouvaras
authors.affiliation: Department of Energy Engineering, Hanyang University, Seoul, 133-791, South Korea.
authors.forename: Yang-Kook
authors.initials: YK
authors.lastname: Sun
authors.affiliation: Elettrochimica ed Energia, Via di Priscilla 22, 00199, Rome, Italy.
authors.forename: Bruno
authors.initials: B
authors.lastname: Scrosati
authors.affiliation: Helmholtz Institute Ulm (HIU), Helmholtzstrasse 11, 89081, Ulm, Germany. stefano.passerini@kit.edu.|Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021, Karlsruhe, Germany. stefano.passerini@kit.edu.
authors.forename: Stefano
authors.initials: S
authors.lastname: Passerini
authors.affiliation: Department of Chemistry, Sapienza University, Piazzale Aldo Moro 5, 00185, Rome, Italy. jusef.hassoun@unife.it.|Department of Chemical and Pharmaceutical Sciences, University of Ferrara, Via Fossato di Mortara, 44121, Ferrara, Italy. jusef.hassoun@unife.it.
authors.forename: Jusef
authors.initials: J
authors.lastname: Hassoun
keywords: electrochemistry; ionic liquids; lithium-ion batteries; nanostructures