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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.

SUBMITTER: Vlad A

PROVIDER: S-EPMC3458382 | biostudies-literature | 2012 Sep

REPOSITORIES: biostudies-literature

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Roll up nanowire battery from silicon chips.

Vlad Alexandru A Reddy Arava Leela Mohana AL Ajayan Anakha A Singh Neelam N Gohy Jean-François JF Melinte Sorin S Ajayan Pulickel M PM

Proceedings of the National Academy of Sciences of the United States of America 20120904 38

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 stabi ...[more]

PMID: 22949696

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