Cumulenic sp-carbon Atomic Wires Wrapped Polymers for Supercapacitor Application

Abstract

Carbon atomic wires, a linear atomic chain of sp-carbon, is theoretically predicted to have around five times higher surface area than graphene, notable charge mobilities, as well as excellent optical and thermal properties. Despite these impressive properties, the properties of sp-carbon as an electrochemical energy-storage electrode have not been reported so far. Herein, we prepare solution processed thin films of tetraphenyl[3]cumulenic sp-carbon atomic wires embedded in a polymer matrix, in which sp-carbon atomic wires feature three cumulated carbon-carbon double bonds terminated at each end by two phenyl groups. Raman and UV-visible spectroscopy are used to confirm the presence and possible degradation of sp-carbons inside the polymeric matrix. Finally, we investigate the supercapacitor performance of cumulenic sp-carbon atomic wires embedded polymer in three aqueous mediums, namely 1M Na2SO4 (neutral), 1M H2SO4 (acidic), and 6M KOH (basic). The results suggest 6M KOH is the best electrolyte to obtain high charge-storage performance of device with areal capacitance of 2.4 mF/cm2 at 20 mV/s, 85% cycle stability after 10000 charge-discharge cycles, and excellent frequency response.

15 pages, 2 supplementary pages, 5 figures, 2 supporting figures

References in corpus (6)

• Raman Scattering Cross Section of Confined Carbyne
• Stable and Solution-Processable Cumulenic sp-Carbon Wires: A New Paradigm for Organic Electronics
• Solvent-dependent termination, size and stability in polyynes synthesis by laser ablation in liquids
• In situ synthesis of polyynes in a polymer matrix by pulsed laser ablation in liquid
• Ballistic-aggregated Carbon Nanofoam in Target-side of Pulsed Laser Deposition for Energy Storage Applications
• One-step Pulsed Laser Deposition of Metal oxynitride/Carbon Composites for Supercapacitor Application

Cited by in corpus (4)

• Wettability and sp2/sp3 ratio effects on supercapacitor performance of N-doped hydrogenated amorphous Carbon Nanofoam
• Low-density functionalized amorphous carbon nanofoam as binder-free Supercapacitor electrode
• Charge-Transfer Induced Reactivity in sp Carbon Atomic Wires: Towards 0-D sp-sp2 Nanostructures
• Halogen-Terminated Carbon Atomic Wires by Laser Ablation in Halogenated Organic Solvents: Synthesis and Characterization