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大牛Nikhil Koratkar最新锂硫电池力作（ACS Nano，2015年10月2日） 已有4人参与
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题目：A Foldable Lithium–Sulfur Battery 作者：Lu Li†, Zi Ping Wu§, Hao Sun∥, Deming Chen§, Jian Gao‡, Shravan Suresh†, Philippe Chow‡, Chandra Veer Singh∥#, and Nikhil Koratkar*†‡ † Mechanical, Aerospace and Nuclear Engineering, and ‡Materials Science and Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180, United States § Jiangxi Key Laboratory of Power Battery and Materials, School of Materials Science and Engineering, Jiangxi University of Science and Technology, 86 Hong Qi Road, Ganzhou 341000, P. R. China ∥ Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto M5S 3G8, Ontario, Canada # Department of Materials Science and Engineering, University of Toronto, 184 College St, Suite 140, Toronto M5S 3E4, Ontario, Canada 摘要：The next generation of deformable and shape-conformable electronics devices will need to be powered by batteries that are not only flexible but also foldable. Here we report a foldable lithium–sulfur (Li–S) rechargeable battery, with the highest areal capacity (～3 mAh cm–2) reported to date among all types of foldable energy-storage devices. The key to this result lies in the use of fully foldable and superelastic carbon nanotube current-collector films and impregnation of the active materials (S and Li) into the current-collectors in a checkerboard pattern, enabling the battery to be folded along two mutually orthogonal directions. The carbon nanotube films also serve as the sulfur entrapment layer in the Li–S battery. The foldable battery showed <12% loss in specific capacity over 100 continuous folding and unfolding cycles. Such shape-conformable Li–S batteries with significantly greater energy density than traditional lithium-ion batteries could power the flexible and foldable devices of the future including laptops, cell phones, tablet computers, surgical tools, and implantable biomedical devices.  nn-2015.gif |
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2015-10-02 07:36:03, 602.18 K
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