title: Roll up nanowire battery from silicon chips.
abstract: Here we report an approach to roll out Li-ion battery components from silicon chips by a continuous and repeatable etch-infiltrate-peel cycle. Vertically aligned silicon nanowires etched from recycled silicon wafers are captured in a polymer matrix that operates as Li(+) gel-electrolyte and electrode separator and peeled off to make multiple battery devices out of a single wafer. Porous, electrically interconnected copper nanoshells are conformally deposited around the silicon nanowires to stabilize the electrodes over extended cycles and provide efficient current collection. Using the above developed process we demonstrate an operational full cell 3.4 V lithium-polymer silicon nanowire (LIPOSIL) battery which is mechanically flexible and scalable to large dimensions.
authors.affiliation: Department of Mechanical Engineering and Materials Science, Rice University, Houston, TX 77005, USA.
authors.forename: Alexandru
authors.initials: A
authors.lastname: Vlad
authors.forename: Arava Leela Mohana
authors.initials: AL
authors.lastname: Reddy
authors.forename: Anakha
authors.initials: A
authors.lastname: Ajayan
authors.forename: Neelam
authors.initials: N
authors.lastname: Singh
authors.forename: Jean-François
authors.initials: JF
authors.lastname: Gohy
authors.forename: Sorin
authors.initials: S
authors.lastname: Melinte
authors.forename: Pulickel M
authors.initials: PM
authors.lastname: Ajayan
mesh_terms: D003300:Copper / Q000737:chemistry; D011211:Electric Power Supplies; D004566:Electrodes; D004581:Electronics; D004867:Equipment Design; D008094:Lithium / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D053770:Nanowires / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry; D012037:Refuse Disposal; D012825:Silicon / Q000737:chemistry*
chemical_list: D011108:Polymers; D003300:Copper; D008094:Lithium; D012825:Silicon