tailieunhanh - Báo cáo hóa học: " Hollow Nanostructured Anode Materials for Li-Ion Batteries"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Hollow Nanostructured Anode Materials for Li-Ion Batteries | Nanoscale Res Lett 2010 5 1525-1534 DOI s11671-010-9728-5 NANO REVIEW Hollow Nanostructured Anode Materials for Li-Ion Batteries Jun Liu Dongfeng Xue Received 28 July 2010 Accepted 2 August 2010 Published online 13 August 2010 The Author s 2010. This article is published with open access at Abstract Hollow nanostructured anode materials lie at the heart of research relating to Li-ion batteries which require high capacity high rate capability and high safety. The higher capacity and higher rate capability for hollow nanostructured anode materials than that for the bulk counterparts can be attributed to their higher surface area shorter path length for Li transport and more freedom for volume change which can reduce the overpotential and allow better reaction kinetics at the electrode surface. In this article we review recent research activities on hollow nanostructured anode materials for Li-ion batteries including carbon materials metals metal oxides and their hybrid materials. The major goal of this review is to highlight some recent progresses in using these hollow nanomaterials as anode materials to develop Li-ion batteries with high capacity high rate capability and excellent cycling stability. Keywords Li-ion batteries Anode Hollow nanomaterials Nanotubes Nanocomposites Introduction With great success in the portable electronic sector Li-ion batteries have been considered the most promising energy storage technology for hybrid plug-in hybrid and electric vehicle applications which are central to the reduction of J. Liu D. Xue State Key Laboratory of Fine Chemicals Department of Materials Science and Chemical Engineering School of Chemical Engineering Dalian University of Technology 116012 Dalian China e-mail dfxue@ CO2 emissions arising from transportation. A Li-ion battery is mainly composed of an anode negative a cathode positive an electrolyte and a separator Fig. 1 . Previous studies have showed that there are two .