tailieunhanh - A three-dimensional macroporous Cu/SnO2 composite anode sheet prepared via a novel method

A three-dimensional macroporous Cu/SnO2 composite anode sheet prepared via a novel method was prepared via a novel method that is based on selective reduction of metal oxides at appropriate temperatures. SnO2 particles were imbedded on the Cu particles within the three-dimensionally interconnected Cu substrate. | Journal of Power Sources 195 2010 7403-7408 Contents lists available at ScienceDirect Journal of Power Sources journal homepage locate jpowsour A three-dimensional macroporous Cu SnO2 composite anode sheet prepared via a novel method Wu Xu Nathan L. Canfield Deyu Wang Jie Xiao Zimin Nie Ji-Guang Zhang Energy and Environment Directorate Pacific Northwest National Laboratory 902 Battelle Boulevard Richland WA 99354 USA ARTICLE INFO ABSTRACT Article history Received 19 April 2010 Received in revised form 26 May 2010 Accepted 27 May 2010 Available online 1 June 2010 Keywords SnO2 Composite Anode material Porous sheet Li-ion battery A three-dimensional macroporous Cu SnO2 composite anode sheet for lithium ion batteries was prepared via a novel method that is based on selective reduction of metal oxides at appropriate temperatures. SnO2 particles were imbedded on the Cu particles within the three-dimensionally interconnected Cu substrate and the whole composite sheet was used directly as an electrode without adding extra conductive carbons and binders. Compared with the SnO2-based electrode prepared via the conventional tape-casting method on Cu foil the porous Cu SnO2 composite electrode shows significantly improved battery performance. This methodology produces limited wastes and is also adaptable to many other materials. It is a promising approach to make macroporous electrode for Li-ion batteries. 2010 Elsevier . All rights reserved. 1. Introduction SnO2 has been investigated extensively as an alternative anode material to replace graphite in Li-ion batteries during the last decade because it has theoretical specific capacity 782 mAh g-1 as twice as graphite 1-10 . Different nanostructures of SnO2 have been reported such as thin films 1 nanowires 2 3 nanoparticle composites with carbon polypyrrole glucose and others 4-7 core-shell structure 8 and three-dimensional 3D structures including porous SnO2 particles 9 and SnO2 graphene structure 10 . .

• Hoá học
• A three dimensional macroporous Cu SnO2
• Cu SnO2 composite anode sheet
• Anode material
• Metal oxides at appropriate temperatures
• Cu particles
• Three dimensionally interconnected Cu substrate