A new approach and simple method is described to produce macroporous metal sheet as current collector for anode in lithium ion battery. This method, based on slurry blending, tape casting, sintering, and reducing of metal oxides, produces a uniform, macroporous metal sheet. Silicon film sputter-coated on such porous copper substrate shows much higher capacity and longer cycle life than on smooth Cu foil. This methodology produces very limited wastes and is also adaptable to many other materials. It is easy for industrial scale production.
Revised: May 31, 2012 |
Published: May 5, 2010
Citation
Xu W., N.L. Canfield, D. Wang, J. Xiao, Z. Nie, X.S. Li, and W.D. Bennett, et al. 2010.Approach to make macroporous metal sheets as current collectors for lithium-ion batteries.Journal of the Electrochemical Society 157, no. 7:A765-A769.PNNL-SA-69910.