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Combinatorial Investigations of Ni-Si Negative Electrode Materials for Li-Ion Batteries

dc.contributor.authorObrovac, MN
dc.contributor.authorHatchard, T. D.
dc.contributor.authorDu, Zhijia
dc.contributor.authorDunlap, RA
dc.date.accessioned2023-02-09T15:05:39Z
dc.date.available2023-02-09T15:05:39Z
dc.date.issued2015-06-30
dc.description.abstractSputtered thin films in the Ni-Si system (0 ≤ x ≤ 0.65 in NixSi1-x) were studied for use as anode materials in Li-ion cells. All compositions were found to be amorphous. The Ni in Ni-Si films was found to suppress the lithiation voltage, resulting in a reduction in capacity. The delithiation voltage was not affected. No capacity was observed when Ni content was more than 50 at% because at this composition the lithiation voltage was suppressed to 0 V. In contrast to previous models of capacity in transition metal-Si films, all Si atoms were found to be active in Ni-Si films at all compositions. Capacity reduction is only caused by a suppression of the Si lithiation voltage. We attribute this voltage suppression to internal stress in the thin film during lithiation from the presence of Ni.en_US
dc.identifier.citationZhijia Du, T.D. Hatchard, R.A. Dunlap and M.N. Obrovac, Combinatorial Investigations of Ni-Si Negative Electrode Materials for Li-Ion Batteries, J. Electrochem. Soc., 162 (2015), A1858-A1863.en_US
dc.identifier.urihttp://hdl.handle.net/10222/82297
dc.publisherIOPscienceen_US
dc.relation.ispartofJournal of The Electrochemical Societyen_US
dc.titleCombinatorial Investigations of Ni-Si Negative Electrode Materials for Li-Ion Batteriesen_US
dc.typeArticleen_US

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