26August2019

Nano-Micro Letters

Rational Design of WO3 Nanostructures as the Anode Materials for Lithium Ion Batteries with Enhanced Electrochemical Performance

Yang Liu, Yang Jiao, Haiyue Zhou, Xiang Yu, Fengyu Qu, Xiang Wu*

Abstract
icon-htmlFull Text Html
icon-pdf-smPDF w/ Links
icon-citExport CitationFigures

Nano-Micro Letters, , Volume 7, Issue 1, pp 12-16

First Online: November 14, 2014 (Article)

DOI:10.1007/s40820-014-0013-5

 

Abstract

 


SEM images of the as-synthesized WO3 microflowers (a-b) and nanowires (c-d) at different magnifications.

A facile, one-step hydrothermal method was employed to synthesize two kinds of WO3 nanostructures. By using different kinds of sylivine, tungsten trioxide (WO3) with different morphologies of microflowers and nanowires were obtained, respectively. The discharge capacities for microflowers and nanowires are 107 mAh g–1 and 146 mAh g–1 after 180 cycles, and their corresponding capacity retentions after the first cycle are 72 % and 85 %, respectively. Even at a high current density of 1600 mAh g–1, the discharge capacities of WO3 microflowers and nanowires are as high as 433 mAh g–1 and 557 mAh g–1 after 40 cycles, in which the current densities were increased stepwise. It is worth mentioned that the rate capability of the nanowires is superior to that of the microflowers. However, the cycle performance of the microflowers is better than nanowires, revealing that the morphology and structure of the as-synthesized WO3 products can exert great influence on the electrochemical performances.

View: Full Text HTML | PDF w/ Links