Recent advances in three dimensional thin film microbatteries

M. Nathan, D. Golodnitsky, V. Yufit, E. Strauss, T. Ripenbein, I. Shechtman, S. Menkin, E. Peled

Research output: Contribution to journalConference articlepeer-review

Abstract

Autonomous MEMS require similarly miniaturized power sources. We present the first three-dimensional (3D) working thin-film microbattery (MB) technology that is compatible with MEMS requirements. Our 3D MBs are formed in perforated substrates (silicon chip or glass microchannel plate), in which a sandwich-like thin-film battery structure is deposited conformally and sequentially on all available surfaces, using wet chemistry. The area of high aspect ratio holes in the substrate enhances the capacity and energy density per given substrate footprint by more than an order of magnitude. Full 3D cells were manufactured on both glass and silicon substrates. A 3D cell on a micro-channel plate substrate exhibited a capacity of ca. 2mAh/cm2, in good agreement with the ca. 23 times area gain provided vs an identical footprint 2D cell.

Original languageEnglish
Article numberK10.10
Pages (from-to)367-372
Number of pages6
JournalMaterials Research Society Symposium Proceedings
Volume835
StatePublished - 2005
EventSolid State Ionics - 2004 - Boston, MA, United States
Duration: 29 Nov 20042 Dec 2004

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