Next Article in Journal
First-Principles Assessment of the Structure and Stability of 15 Intrinsic Point Defects in Zinc-Blende Indium Arsenide
Previous Article in Journal
Spatio-temporal Investigations of the Incomplete Spin Transition in a Single Crystal of [Fe(2-pytrz)2{Pt(CN)4}]·3H2O: Experiment and Theory
Previous Article in Special Issue
Fabrication of GaOx Confinement Structure for InGaN Light Emitter Applications
Article Menu
Issue 1 (January) cover image

Export Article

Open AccessArticle
Crystals 2019, 9(1), 47; https://doi.org/10.3390/cryst9010047

Research on the High-Performance Electrochemical Energy Storage of a [email protected] (NZO) Hybrid Based on Growth Time

1
School of Materials Science and Engineering, Chang’an University, Xi’an 710064, China
2
College Key Laboratory Automotive Transportation Safety Technology Ministry of Communication, Chang’an University, Xi’an 710064, China
*
Author to whom correspondence should be addressed.
Received: 14 December 2018 / Revised: 11 January 2019 / Accepted: 11 January 2019 / Published: 16 January 2019
(This article belongs to the Special Issue Functional Oxide Based Thin-Film Materials)
Full-Text   |   PDF [4076 KB, uploaded 22 January 2019]   |  
  |   Review Reports

Abstract

A [email protected] (NZO) hybrid with different reaction times was successfully synthesized by a green hydrothermal method. After comparison, it was found that hydrothermal time had a great impact on specific capacitance. As a supercapacitor electrode of NZO-12h, it exhibited the maximum reversible specific capacitance of 985.0 F/g (3.94 F/cm2) at 5 mA/cm2 and 587.5 F/g (2.35 F/cm2) at 50 mA/cm2, as well as a high retention of 74.9% capacitance after 1500 cycles at 20 mA/cm2. Furthermore, the asymmetric electrode device with ZnO-12h and activated carbon (AC) as the positive and negative electrodes was successfully assembled. In addition, the device exhibited a specific capacitance of 85.7 F/g at 0.4 A/g. Moreover, the highest energy density of 27.13 Wh kg−1 was obtained at a power density of 321.42 W kg−1. These desirable electrochemical properties demonstrate that the NZO hybrid is a promising electrode material for a supercapacitor. View Full-Text
Keywords: [email protected]; electrochemical performance; supercapacitor [email protected]; electrochemical performance; supercapacitor
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Zheng, J.; Zhang, R.; Cheng, K.; Xu, Z.; Yu, P.; Wang, X.; Niu, S. Research on the High-Performance Electrochemical Energy Storage of a [email protected] (NZO) Hybrid Based on Growth Time. Crystals 2019, 9, 47.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Crystals EISSN 2073-4352 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top