Synthesis and Characterization of Diazonium Salts with Polyethylene Glycol Appendages and Resulting Films Afforded by Electrodeposition for Use as a Battery Separator Material
By Bates, Daniel J.; Elliott, C. Michael & Prieto, Amy L.
Published in Chemistry of Materials
NULL
2014
Abstract
The coating of three-dimensional nanostructured electrodes is a significant challenge for the future of many energy storage devices and, if successful, could profoundly increase battery power. The synthesis of a new class of monomers that can be electrochemically polymerized is a key first step in affording a conformally coated, nanoscale lithium-ion battery separator and is presented herein. Characterization of the monomers was accomplished via nuclear magnetic resonance and infrared spectroscopy. Planar films electrodeposited from the monomers were characterized using redox probe experiments and impedance spectroscopy. The films are chemically grafted to the underlying substrate (conformal, pinhole free, <10 nm thick) and exhibit electrical resistivity values as high as 28000 MΩ/cm.
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