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Electrochemical Behavior of Sn/Cu6Sn5/C Composite Prepared by Using Pulsed Wire Explosion in Liquid Medium for Lithium-Ion Batteries

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Tin-based materials, due to their high theoretical capacity of 994 mAh g−1 are potential candidates which can substitute the commercialized graphite anodes (372 mAh g−1). However, practical usage of pure tin in Li-ion cells has been hampered by the tremendous volume expansion of more than 260% during the lithium insertion/extraction process, resulting in particle pulverization and electrical disconnection from the current collector. In order to overcome this shortcoming, Sn/Cu6Sn5/C composites in this work were prepared by using pulsed wire explosion in a liquid medium and subsequently in situ polymerization. For comparison, Sn/C composite without tin-copper chemical compounds are also fabricated under a similar process. The Sn/Cu6Sn5/C and Sn/C composites were used as anodes for lithium-ion batteries. The Sn/Cu6Sn5/C composite anode showed good cyclability (scalability) and was maintained up to a capacity of 430 mAh g−1 after 100 cycles at 1 C-rate. The rate capability of the Sn/Cu6Sn5/C composite anode also showed higher performance (280 mAh g−1) than that (200 mAh g−1) of Sn/C composite at the 5 C-rate.
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Keywords: Electrochemical Property; Lithium-Ion Batteries; Polymerization; Pulsed Wire Explosion; Sn/Cu6Sn5/C Composite

Document Type: Research Article

Affiliations: 1: Department of Materials Engineering and Convergence Technology and RIGET, Gyeongsang National University, Jinju-daero 501, Jinju 52828, Republic of Korea 2: Department of Ceramic Engineering, Gyeongsang National University, Jinju-daero 501, Jinju 52828, Republic of Korea

Publication date: September 1, 2018

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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