High-power and long-life supercapacitive performance of hierarchical, 3-D urchin-like W18O49 nanostructure electrodes

Sangbaek Park, Hyun Woo Shim, Chan Woo Lee, Hee Jo Song, Jae Chan Kim, Dong Wan Kim

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

We report the facile, one-pot synthesis of 3-D urchin-like W18O49 nanostructures (U-WO) via a simple solvothermal approach. An excellent supercapacitive performance was achieved by the U-WO because of its large Brunauer–Emmett–Teller (BET) specific surface area (ca. 123 m2·g–1) and unique morphological and structural features. The U-WO electrodes not only exhibit a high rate-capability with a specific capacitance (Csp) of ~235 F·g–1 at a current density of 20 A·g–1, but also superior long-life performance for 1,000 cycles, and even up to 7,000 cycles, showing ~176 F·g–1 at a high current density of 40 A·g–1. [Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)633-643
Number of pages11
JournalNano Research
Volume9
Issue number3
DOIs
Publication statusPublished - 2016 Mar 1

Keywords

  • WO
  • hierarchical structure
  • high-power
  • long cycle life
  • supercapacitor

ASJC Scopus subject areas

  • Materials Science(all)
  • Electrical and Electronic Engineering

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