Wearable Solid-State Supercapacitors Operating at High Working Voltage with a Flexible Nanocomposite Electrode

Xiaoyan Li, Jun Wang, Yaping Zhao, Fengyan Ge, Sridhar Komarneni, Zaisheng Cai

Research output: Contribution to journalArticle

21 Scopus citations

Abstract

The proposed approach for fabricating ultralight self-sustained electrodes facilitates the structural integration of highly flexible carbon nanofibers, amino-modified multiwalled carbon nanotubes (AM-MWNT), and MnO2 nanoflakes for potential use in wearable supercapacitors. Because of the higher orientation of AM-MWNT and the sublimation of terephthalic acid (PTA) in the carbonization process, freestanding electrodes could be realized with high porosity and flexibility and could possess remarkable electrochemical properties without using polymer substrates. Wearable symmetric solid-state supercapacitors were further assembled using a LiCl/PVA gel electrolyte, which exhibit a maximum energy density of 44.57 Wh/kg (at a power density of 337.1 W/kg) and a power density of 13330 W/kg (at an energy density of 19.64 Wh/kg) with a working voltage as high as 1.8 V. Due to the combination of several favorable traits such as flexibility, high energy density, and excellent electrochemical cyclability, the presently developed wearable supercapacitors with wide potential windows are expected to be useful for new kinds of portable electric devices.

Original languageEnglish (US)
Pages (from-to)25905-25914
Number of pages10
JournalACS Applied Materials and Interfaces
Volume8
Issue number39
DOIs
StatePublished - Oct 5 2016

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Fingerprint Dive into the research topics of 'Wearable Solid-State Supercapacitors Operating at High Working Voltage with a Flexible Nanocomposite Electrode'. Together they form a unique fingerprint.

  • Cite this