Flexible Nb4N5/rGO electrode for high-performance solid state supercapacitors

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Author(s)

  • Yuan Yang
  • Jijiang Fu
  • Jiawei Wu
  • Hao Song
  • Xuming Zhang
  • Biao Gao
  • Kaifu Huo

Detail(s)

Original languageEnglish
Pages (from-to)30-38
Journal / PublicationJournal of Nanoscience and Nanotechnology
Volume18
Issue number1
Publication statusPublished - Jan 2018

Abstract

Flexible supercapacitors (SCs) are desirable for elastic and clothing electronic products owning to their considerable safety, high foldability and outstanding power density. Herein, multilayered films composed of alternating mesoporous Nb4N5 nanobelts and rGO nanosheets (Nb4N5/rGO) are designed and fabricated exhibiting good flexibility. The folding Nb4N5/rGO film electrode reveals an areal capacitance of 141 mF cm-2 (at 1 mA cm-2) along with remarkable cycling stability (the capacitance retention is 90% after 6,000 cycles). The flexible SCs devices were constructed by interlayer couple films of Nb4N5/rGO electrodes with PVA/H2SO4 gel as the electrolyte, which exhibited huge volumetric capacitance of 19 F cm-3 (at 0.1 A cm-3) and a considerable energy density of 0.98 mW h cm-3 with a power density of 0.029 W cm-3. Additionally, the as-obtained folding devices bode outstanding cycling stability with capacitance retention of 89% after 4,000 cycles measured by cyclic voltammetry method (at 100 mV s-1). Above results about niobium nitride based flexible electrodes and devices exploit a platform for wearable electronics and flexible devices.

Research Area(s)

  • Flexible, Graphene, Nb4n5 nanobelts, Solid state supercapacitors

Citation Format(s)

Flexible Nb4N5/rGO electrode for high-performance solid state supercapacitors. / Huang, Chao; Yang, Yuan; Fu, Jijiang; Wu, Jiawei; Song, Hao; Zhang, Xuming; Gao, Biao; Chu, Paul K.; Huo, Kaifu.

In: Journal of Nanoscience and Nanotechnology, Vol. 18, No. 1, 01.2018, p. 30-38.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review