ICVD Cyclic Polysiloxane and Polysilazane as Nanoscale Thin‐Film Electrolyte: Synthesis and Properties. Issue 5 (20th January 2016)

• Record Type: Journal Article
• Authors: Chen, Nan; Reeja‐Jayan, B.; Liu, Andong; Lau, Jonathan; Dunn, Bruce; Gleason, Karen K.
• Is Part Of: Macromolecular rapid communications. Volume 37:Issue 5(2016)
• Page Start: 446
• Page End: 452
• Publication Date: 2016-01-20
• Subjects: initiated chemical vapor deposition -- lithium ion battery -- polymer electrolyte -- polysilazane -- polysiloxane; Macromolecules -- Periodicals; Polymers -- Periodicals; Chemistry -- Periodicals; 547.705
• DOI: 10.1002/marc.201500649
• Languages: English
• ISSNs: 1022-1336

Abstract

Abstract : 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. Abstract : A group of crosslinked cyclic siloxane and silazane polymers were synthesized via initiated chemical vapor deposition . These nanoscale polymer thin films can uniformly and conformally cover nonplanar substrates. After lithiation, these polymer films show ionic conductivity at room temperature, which let them to be considered as thin‐film electrolytes in novel solid‐state Li + batteries. Their synthesis process and properties were also systematically studied.