Titanium nitride thin film anode: chemical and microstructural evaluation during electrochemical studies

Raman, Thulasi KH and Penki, Tirupathi Rao and Munichandraiah, N and Rao, Mohan G (2014) Titanium nitride thin film anode: chemical and microstructural evaluation during electrochemical studies. In: ELECTROCHIMICA ACTA, 125 . pp. 282-287.

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Abstract

TIN thin films with (200) fibre texture are deposited on Cu substrate at room temperature using reactive magnetron sputtering. They exhibit a discharge capacity of 172 mu Ah cm(-2) mu m(-1) (300 mAh g(-1)) in a non-aqueous electrolyte containing a Li salt. There is a graded decrease in discharge capacity when cycled between 0.01 and 3.0 V. Electron microscopy investigations indicate significant changes in surface morphology of the cycled TiN electrodes in comparison with the as deposited TiN films. From XPS depth profile analysis, it is inferred that Li intercalated TIN films consist of lithium compounds, hydroxyl groups, titanium sub oxides and TiN. Lithium diffusivity and reactivity decrease with increase in depth and the major reaction with lithium takes place at film surface and grain boundaries. (C) 2014 Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Publication:	ELECTROCHIMICA ACTA
Publisher:	PERGAMON-ELSEVIER SCIENCE LTD
Additional Information:	Copyright for this article belongs to the PERGAMON-ELSEVIER SCIENCE LTD, ENGLAND
Keywords:	Li- ion battery; thin film battery; TiN anode; electrochemical performance
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited:	10 Jun 2014 11:10
Last Modified:	10 Jun 2014 11:11
URI:	http://eprints.iisc.ac.in/id/eprint/49180

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