J. Electrochem. Soc. 2007, in press.

Fabrication of a Fully Infiltrated 3-Dimensional Solid‑State Interpenetrating Electrochemical Cell

Nicholas S. Ergang,¹ Melissa A. Fierke,¹ Zhiyong Wang,¹ William H. Smyrl,² Andreas Stein¹*

Abstract

A 3-dimensional solid-state interpenetrating electrochemical cell was synthesized by infiltrating a V₂O₅ cathode ambigel into a macroporous, polymer-coated carbon anode. The cathode material was characterized using scanning electron microscopy, N₂ sorption analysis, and X‑ray photoelectron spectroscopy to determine the overall filling, surface area, and oxidation state of the vanadia material. The lithiated cell was electrochemically cycled. In comparison to a similar, previously prepared cell that employed a V₂O₅ xerogel cathode, the increased surface area and pore filling of the V₂O₅ ambigel cathode in this cell generated a significant increase in the reversible gravimetric cell capacity.