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Proceedings Paper

Solid-state actuation based on reversible Li electroplating
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Paper Abstract

Reversible electrochemical compound formation has considerable potential to form the basis of a high-strain high-force multifunctional actuator technology. We present preliminary experimental demonstrations of the reversible work capability of solid-state electroplating. Our experimental test case is the volume expansion incurred during the reversible electrochemical formation of thin-film Li metal from a ceramic lithium ion storage medium, LiCoO2 as part of the standard operation of a state-of-the-art Li-ion battery. Reversible work is accomplished through the plating or stripping of the pure Li film against an external load. With the active portion of the structure as a basis, we observe ~10% strain against loads up to 2 MPa, with the load being limited by battery failure. No change in actuation characteristics is observed up to failure.

Paper Details

Date Published: 16 May 2005
PDF: 8 pages
Proc. SPIE 5761, Smart Structures and Materials 2005: Active Materials: Behavior and Mechanics, (16 May 2005); doi: 10.1117/12.601493
Show Author Affiliations
William Barvosa-Carter, HRL Labs., LLC (United States)
Cameron G. Massey, HRL Labs., LLC (United States)
Geoffrey McKnight, HRL Labs., LLC (United States)
Ping Liu, HRL Labs., LLC (United States)

Published in SPIE Proceedings Vol. 5761:
Smart Structures and Materials 2005: Active Materials: Behavior and Mechanics
William D. Armstrong, Editor(s)

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