Journal
MACROMOLECULAR RAPID COMMUNICATIONS
Volume 37, Issue 5, Pages 446-452Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.201500649
Keywords
initiated chemical vapor deposition; lithium ion battery; polymer electrolyte; polysilazane; polysiloxane
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Funding
- Office of Naval Research [N00014-13-1-0466]
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A group of crosslinked cyclic siloxane (Si-O) and silazane (Si-N) polymers are synthesized via solvent-free initiated chemical vapor deposition (iCVD). Notably, this is the first report of cyclic polysilazanes synthesized via the gas-phase iCVD method. The deposited nanoscale thin films are thermally stable and chemically inert. By iCVD, they can uniformly and conformally cover nonplanar surfaces having complex geometry. Although polysiloxanes are traditionally utilized as dielectric materials and insulators, our research shows these cyclic organosilicon polymers can conduct lithium ions (Li+) at room temperature. The conformal coating and the room temperature ionic conductivity make these cyclic organosilicon polymers attractive for use as thin-film electrolytes in solid-state batteries. Also, their synthesis process and properties have been systemically studied and discussed.
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