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Flexible carbon nanotube--Cu2O hybrid electrodes for li-ion batteries
Anubha Goyal1, Arava L M Reddy, Pulickel M Ajayan
1Department of Mechanical Engineering and Materials Science, Rice University, 6100, Main Street Houston, Texas 77005, USA.
Abstract:
This study demonstrates the formation of a flexible and free-standing carbon nanotube-copper oxide-poly(vinylidene fluoride) (CNT-Cu(2) O-PVDF) nanocomposite and its application as an electrode-separator material for Li-ion batteries. Binder-free hybrid electrodes are obtained by conformally coating CNTs with Cu(2) O via electrodeposition and then embedding the resulting architecture into a porous poly(vinylidene fluoride-hexafluoropropylene) PVDF-HFP-SiO(2) polymer electrolyte membrane. The synergistic presence of high-capacity transition metal oxides and conductive CNTs results in twice the reversible areal capacity of 2.3 mAh cm(-2) as compared to 1.2 mAh cm(-2) for pure CNTs.
