Departmental Papers (MSE)

Document Type

Journal Article

Date of this Version

5-4-2011

Abstract

Lithium (Li) dendrite formation has been recognized as one of the major safety concerns for Li metal batteries but not for conventional Li ion batteries (LIBs) where Li metal is not used. With the advanced in situ transmission electron microscopy enabling direct observation of battery operation, we found that Li fibers with length up to 35 µm grew on nanowire tip after charging. The Li fibers growth were highly directional, i.e., nucleating from the nanowire tip, and extending along the nanowire axis, which was attributed to the strong electric field enhancement effect induced by the sharp nanowire tip. This study reveals a potential safety concern of short-circuit failure for LIBs using nanowire anodes.

Comments

Suggested Citation:
X.H. Liu, et al. Lithium fiber growth on the anode in a nanowire lithium ion battery during charging. Applied Physics Letters 98, 183107.

© 2011 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Applied Physics Letters and may be found at http://dx.doi.org/10.1063/1.3585655

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Date Posted: 11 May 2011

This document has been peer reviewed.