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Recent Findings from Sakarya University Provides New Insights into Silicon (Coaxial silicon/multi-walled carbon nanotube nanocomposite anodes for...

July 4, 2014



Recent Findings from Sakarya University Provides New Insights into Silicon (Coaxial silicon/multi-walled carbon nanotube nanocomposite anodes for long cycle life lithium-ion batteries)

By a News Reporter-Staff News Editor at Science Letter -- Current study results on Silicon have been published. According to news originating from Sakarya, Turkey, by NewsRx correspondents, research stated, "In this work silicon/multi walled carbon nanotube (MWCNT) composite anodes were produced via direct current (DC) magnetron sputtering of silicon onto carbon nanotube papers (buckypapers). The amount of silicon in the composite anodes was varied by using different sputtering powers of 150W, 175W, 200W and the effect on the cell performance was studied."

Our news journalists obtained a quote from the research from Sakarya University, "Phase analysis was conducted with X-ray diffraction (XRD) technique and Raman spectroscopy. Field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) analyses were employed for morphological characterization of anodes. Energy dispersive spectroscopy (EDS) mapping was used to observe silicon distribution on the buckypapers. Cyclic voltammetry (CV) tests were carried out to reveal reversible reactions between silicon and lithium. Galvanostatic charge/discharge technique was employed to determine the cyclic performance of anodes. Electrochemical impedance spectroscopy technique was used to understand the relation between cyclic performance and internal resistance of cells. The results showed capacity retention of silicon anodes was improved with composite structure and higher capacity values were achieved than graphite anodes."

According to the news editors, the research concluded: "The silicon/carbon nanotube composite produced with 150W showed the best cycle stability after 100 cycles of galvanostatic charge/discharge tests with capacity value of 620 mAh g(-1)."

For more information on this research see: Coaxial silicon/multi-walled carbon nanotube nanocomposite anodes for long cycle life lithium-ion batteries. Applied Surface Science, 2014;305():402-411. Applied Surface Science can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Applied Surface Science - www.elsevier.com/wps/product/cws_home/505669)

The news correspondents report that additional information may be obtained from U. Tocoglu, Sakarya Univ, Fac Engn, Dept. of Met & Mat Engn, TR-54187 Sakarya, Turkey. Additional authors for this research include O. Cevher, M.O. Guler and H. Akbulut (see also Silicon).

Keywords for this news article include: Turkey, Sakarya, Eurasia, Silicon, Fullerenes, Nanotechnology, Emerging Technologies, Multiwalled Carbon Nanotube

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Science Letter


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