Solid-state actuation based on reversible Li electroplating

William Barvosa-Carter; Cameron G. Massey; Geoffrey McKnight; Ping Liu

doi:10.1117/12.601493

16 May 2005 Solid-state actuation based on reversible Li electroplating

William Barvosa-Carter, Cameron G. Massey, Geoffrey McKnight, Ping Liu

Proceedings Volume 5761, Smart Structures and Materials 2005: Active Materials: Behavior and Mechanics; (2005) https://doi.org/10.1117/12.601493
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2005, San Diego, California, United States

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.

Citation Download Citation

William Barvosa-Carter, Cameron G. Massey, Geoffrey McKnight, and Ping Liu "Solid-state actuation based on reversible Li electroplating", Proc. SPIE 5761, Smart Structures and Materials 2005: Active Materials: Behavior and Mechanics, (16 May 2005); https://doi.org/10.1117/12.601493

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