119th General Meeting of the KCS

Type Poster Presentation
Area 전기화학
Room No. 포스터발표장
Time 4월 21일 (금요일) 13:00~14:30
Code ELEC.P-510
Subject Simple Syntheses of Silicon/Titania Nanocomposites on Copper Foils as Lithium-ion Battery Anodes
Authors Man-Jyun Fang, Kuan-Jiuh Lin, 박원철1,*
National Chung-Hsing University, Taiwan
1서울대학교 융합과학기술대학원 융합과학부, Korea
Abstract Combining advantages of high specific capacity and a very small volume expansion ratio, Si/TiO2 nanocomposites are considered as a promising candidate material for lithium-ion battery anodes. In our recent work, highly porous wire-like TiO2 nanostructures with silicon nano-coating as lithium-ion battery anodes have been synthesized directly onto copper foils by a simple two-step process. [1] Firstly, interconnected TiO2 nanowires are synthesized onto the surface of copper foil by an alkali-hydrothermal route. [2-5] Subsequently, Si is deposited onto the surface of the nanowires, forming a silicon/TiO2 nanocomposite (denoted as Si/TNW composite). The morphological and structural characterizations were investigated by SEM, XRD, EDS, and RAMAN, revealing that the TiO2 wires typically have lengths from 200 nm to 400 nm and widths from 20 nm to 50 nm and the Si has a flattish surface with thicknesses of 100, 200 and 300 nm deposited on TiO2 nanowires. These characteristic results indicated that the resulting Si/TNA composites have potential to apply for lithium-ion battery anodes. References: 1. T.W. Pat. No. I491577 Chen, J. Z.; Yen, Y. C.; Chen, P. H.; Lin, K. J. 2015-20362. 2. Chen, J. Z.; Ko, W. Y.; Yen, Y. C.; Chen, P. H.; Lin, K. J.* ACS Nano. 2012, 6, 6633-6639. 3. Yen, Y. C.; Chen, J. Z.; Lu, Y. J.; Gwo, S.; Lin, K. J.* Nanotechnology. 2014, 25, 235602-235609. 4. Chen, J. Z.; Yan, Y. C.; Ko, W. Y.; Chen, C. Y.; Lin, K. J.* Adv. Mater. 2011, 23, 3970-3973. 5. Yen, Y. C.; Ko, W. Y.; Chen, J. Z.; Lin, K. J.* Electrochim. Acta 2013, 105, 142-148.
E-mail parkat9@snu.ac.kr