DataVXACS Applied Energy MaterialsPaper
journal article·2019-02-25Open access

Overcoming the High-Voltage Limitations of Li-Ion Batteries Using a Titanium Nitride Current Collector

Shutao Wang, Kostiantyn V. Kravchyk, Alejandro N. Filippin, Roland Widmer, Ayodhya N. Tiwari, Stephan Buecheler, Maryna I. Bodnarchuk, Maksym V. Kovalenko

ACS Applied Energy Materials· Volume 2· Issue 2
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Source abstract

Abstract

The major obstacle to commercialization of high-voltage Li-ion batteries is the lack of oxidatively stable and inexpensive current collectors that can operate at potentials of up to 5 V vs Li+/Li. In this work, we present titanium nitride as a compelling cathode current collector for high-voltage Li-ion batteries exhibiting higher oxidative stability in LiPF6 and lithium bis(fluorosulfonyl)imide electrolytes than aluminum or stainless steel current collectors. Its high oxidative stability has been assessed with a high-voltage LiMn1.5Ni0.5O4 cathode. TiN/LiMn1.5Ni0.5O4 half cells demonstrated a high Coulombic efficiency of 98.5% at a low C-rate of 0.2 C after 100 cycles.
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Research context

Energy storageMetals & alloys

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Advanced Battery Technologies Research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1, CH-8093 Zürich, Switzerland

Laboratory for Thin Films and Photovoltaics, Empa—Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland

Nanotech@surfaces Laboratory, Empa-Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 Dübendorf, Switzerland

Funding

Innosuisse - Schweizerische Agentur f?r Innovationsf?rderung

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