期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 115, 期 24, 页码 12216-12223出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp2019796
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资金
- U.S. Department of Energy [DE-AC02-06CH11357]
- EMSL
- ANL Laboratory Computing Resource Center (LCRC)
- Center of Nanoscale Materials (CNM)
Silicon-containing solvents have tremendous potential for application as electrolytes for electrical energy storage devices such as lithium-ion (air) batteries and supercapacitors. Quantum chemical methods were employed to investigate trends in oxidation potentials and decomposition reactions of a series of polysiloxanes. Various electron-donating and -withdrawing substituents can be used to tune the oxidation potential in shorter chain siloxanes but not in longer ones. Decomposition reactions of siloxanes in their oxidized states were investigated and compared against their carbon analogues. These studies suggest that the Si-O group provides added stability for siloxanes over their carbon analogues. Computational studies have also been performed for various disiloxanes and siloxanes with spacer groups to understand their thermochemical stability and oxidation potentials.
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