Synthesis and Characterization of Diazonium Salts with Polyethylene Glycol Appendages and Resulting Films Afforded by Electrodeposition for Use as a Battery Separator Material
摘要:
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 M Omega/cm.
Synthesis and Characterization of Diazonium Salts with Polyethylene Glycol Appendages and Resulting Films Afforded by Electrodeposition for Use as a Battery Separator Material
摘要:
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 M Omega/cm.
The rate of hydrolysis (t1/2 = 6.9 min) of the dynamic rotaxane in the presence of a small amount (1 equiv.) of acid was found to be very much faster than when the hydrolysis was carried out with a large amount (>100 equiv.) of water, when t1/2 > 140 min. Furthermore, it has been established that the anthracene fluorescence of the dynamic rotaxane rises with an increasing amount of acid. Two acid sensors
Synthesis and Characterization of Diazonium Salts with Polyethylene Glycol Appendages and Resulting Films Afforded by Electrodeposition for Use as a Battery Separator Material
作者:Daniel J. Bates、C. Michael Elliott、Amy L. Prieto
DOI:10.1021/cm501482h
日期:2014.10.14
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 M Omega/cm.