Combinatorial Investigations of Ni-Si Negative Electrode Materials for Li-Ion Batteries
dc.contributor.author | Obrovac, MN | |
dc.contributor.author | Hatchard, T. D. | |
dc.contributor.author | Du, Zhijia | |
dc.contributor.author | Dunlap, RA | |
dc.date.accessioned | 2023-02-09T15:05:39Z | |
dc.date.available | 2023-02-09T15:05:39Z | |
dc.date.issued | 2015-06-30 | |
dc.description.abstract | Sputtered 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.citation | Zhijia 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.uri | http://hdl.handle.net/10222/82297 | |
dc.publisher | IOPscience | en_US |
dc.relation.ispartof | Journal of The Electrochemical Society | en_US |
dc.title | Combinatorial Investigations of Ni-Si Negative Electrode Materials for Li-Ion Batteries | en_US |
dc.type | Article | en_US |
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