Electrospinning has attracted widespread attention for application in energy storage, as researchers have been able to greatly control the size, dimensionality, and microstructural development of fibers. Polymer-derived-ceramics (PDCs) and PDC-based fibers are being studied as potential high capacity electrode materials for electrochemical energy storage applications. Among these, silicon oxycarbide (SiOC) has shown most promise, especially as electrodes in lithium ion batteries (LIB). Herein we report fabrication of molecular precursor-derived SiOC fibermats <i>via</i> electrospinning and pyrolysis of cyclic polysiloxanes-based precursors at significantly lower weight loadings of organic co-spin agent. Ceramic fibermats were prepared by a one-step spinning (in air) and post heat-treatment for crosslinking and pyrolysis. The pyrolyzed fiber mats were revealed to be amorphous and a few microns in diameter. This work investigates the fabrication of SiOC-based PDC fiber mats via electrospinning and pyrolysis of pre-ceramic polymers of varying composition, and their use as supercapacitor and LIB electrodes.

Synthesis of polymer derived SiOC ceramic fibermats for energy storage systems

ACS Fall 2021

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