Designing SnOx/C films via co-sputtering as anodes for all-solid-state batteries
- Authors
- Park, Seyong; Lee, Kang Soo; Yoon, Young Soo
- Issue Date
- 25-May-2016
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Li ion battery; Anode; All-solid-state battery; SnOx/C thin film; Co-sputtering
- Citation
- SURFACE & COATINGS TECHNOLOGY, v.294, pp.139 - 144
- Journal Title
- SURFACE & COATINGS TECHNOLOGY
- Volume
- 294
- Start Page
- 139
- End Page
- 144
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/8280
- DOI
- 10.1016/j.surfcoat.2016.03.071
- ISSN
- 0257-8972
- Abstract
- SnOx/C composite thin films were deposited on stainless steel disc substrates by radio frequency magnetron co-sputtering. SnOx/C thin film anode samples with different tin oxide and carbon ratios were electrochemically in-vestigated. Samples with high carbon composition showed high capacity retention and stability compared to SnO2-only thin film anodes. The film with high carbon content delivered an initial discharge capacity of 8990 mA h cm(-3) at a current density of 150 mu A cm(-2). In the rate capability test from 50 to 500 mu A cm(-2), the last cycle showed 58% of the 1st cycle capacity, while the other samples retained below 50% of the initial capacity. These results indicate that carbon in the thin films resulted in electric conductivity and acted as a buffer for the detrimental tin oxide volume expansion. Consequently, co-sputtering of tin oxide and carbon opens up the possibility of non-lithium anode materials. Moreover, these SnOx/C thin films can be applied as high-performance anode materials for all-solid-state batteries. (C) 2016 Elsevier B.V. All rights reserved.
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