T-Nb2O5 nanoparticle enabled pseudocapacitance with fast Li-ion intercalation

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

16 Scopus Citations
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Author(s)

  • Lingping Kong
  • Xiaoteng Liu
  • Jinjia Wei
  • Ben Bin Xu
  • Donghui Long
  • Fei Chen

Detail(s)

Original languageEnglish
Pages (from-to)14165-14170
Journal / PublicationNanoscale
Volume10
Issue number29
Online published27 Jun 2018
Publication statusPublished - 7 Aug 2018
Externally publishedYes

Abstract

Orthorhombic Nb2O5 (T-Nb2O5) nanocrystallites are successfully fabricated through an evaporation induced self-assembly (EISA) method guided by a commercialised triblock copolymer-Pluronic F127. We demonstrate a morphology transition of T-Nb2O5 from continuous porous nanofilms to monodisperse nanoparticles by changing the content of Pluronic F127. The electrochemical results show that the optimized monodisperse Nb-2 with a particle size of 20 nm achieves premier Li-ion intercalation kinetics and higher rate capability than mesoporous T-Nb2O5 nanofilms. Nb-2 presents an initial intercalation capacity of 528 and 451 C g-1 at current densities of 0.5 and 5 A g-1 and exhibited a stable capacity of 499 C g-1 after 300 charge/discharge cycles and 380 C g- 1 after 1000 cycles, respectively. We would expect this copolymer guided monodispersion of T-Nb2O5 nanoparticles with high Li+ intercalation performance to open up a new window for novel EES technologies.

Citation Format(s)

T-Nb2O5 nanoparticle enabled pseudocapacitance with fast Li-ion intercalation. / Kong, Lingping; Liu, Xiaoteng; Wei, Jinjia; Wang, Steven; Xu, Ben Bin; Long, Donghui; Chen, Fei.

In: Nanoscale, Vol. 10, No. 29, 07.08.2018, p. 14165-14170.

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