Macroscale amphiphilic aerogel fibers made from nonwoven nanofibers for large active mass loading

Haoran Lai, Yaqin Wang, Yaling Wang, Wei Liu, Xiali Bao, Fa Liu, Xinjie Li, Zhongli Lei, Huan Jiao, Zhaoyang Fan

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Fiber-shaped templates that can be easily loaded with a large amount of hydrophilic and/or lipophilic active materials in a facile process like dip coating, will find many applications including for wearable electronics. Here, macroscale amphiphilic aerogel-like fiber, made from electrospun glycerol-functionalized polyacrylonitrile (PAN) nanofibers (GPN) on a centering metal wire, is reported. With its high porosity, large void space, and both hydrophilic and lipophilic characteristics, this unique GPN aerogel fiber can absorb a large amount of aqueous and oil solutions dispersed with different active materials. In particular, poly (3,4-ethylenedioxythiophene):poly (styrenesulfonate) (PP) represented water-soluble active material is selected to prepare PP-loaded fiber, which is further coated with polyaniline (PANI). The PP@GPN/Ti and PANI@PP@GPN/Ti fibers are studied as electrodes for flexible yarn-shaped solid-sate supercapacitors. A fiber-length-specific capacitance as large as 243 mF cm−1 is measured at 0.1 mA cm−1, one of the best capacitances ever reported for fiber supercapacitors. Colza oil is also tested as a representative oily solvent to investigate the load capacity of GPN aerogel fiber and a mass loading of 124 μl cm−1 is achieved. These results suggest that our unique amphiphilic aerogel fiber could act as a carrier loading a large amount of active masses for many novel applications.

Original languageEnglish (US)
Article number228612
JournalJournal of Power Sources
Volume474
DOIs
StatePublished - Oct 31 2020
Externally publishedYes

Keywords

  • Amphiphilic aerogel
  • Electrospinning
  • High mass loading
  • Supercapacitor

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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