CU MEMS - Nanostructured 3-D Solid-State Rechargeable Batteries

	Multidisciplinary Engineering Micro-Systems Group Mechanical Engineering: University of Colorado at Boulder
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Nanostructured 3-D Solid-State Rechargeable Batteries

PIs:Victor M. Bright, Se-Hee Lee
Students: Jian Wang, James Trevey

Project field/specialty: NEMS, nanomaterials, solid-state battery

Project Description:

This research project involves development and evaluation of an entirely new class of nanostructured 3-D solid-state rechargeable batteries for on-chip energy sources. The 3-D battery design relies on Si nanorods and nanostructured solid-state composites. The nanocomposite cathode consists of nanoparticles of Li(NiCoMn)1/3O2 (L333) interconnected by carbon single wall nanotubes (SWNTs) and surrounded by a solid-state lithium electrolyte. Based on a surface enhancement factor of at least 25, this 3-D battery is expected to deliver about 1 J mm-2, which is a five-fold improvement over the state-of-the-art solid-state thin film batteries.

References:
1. P.H.L. Notten, F. Roozeboom, R.A.H. Niessen and L. Baggetto, Advanced Materials, 19, 4564 (2007).
2. C. K. Chan, H. Peng, G. Liu, K. McIlwrath, X. F. Zhang, R. A. Huggins, and Y. Cui, Nature Nanotech. 3, 31 (2008).
3. P. Liu, S.-H. Lee, C.E. Tracy, Y. Yan, and J.A. Turner, Advanced Materials, 14, 27 (2002).

Funding Source: Semiconductor Research Corp.