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Highly effective self-propagating synthesis of lamellar ZnO-decorated MnO2 nanocrystals with improved supercapacitive performance

Publication ,  Journal Article
Li, L; Li, J; Li, H; Lan, L; Deng, J
Published in: Nanomaterials
July 1, 2021

A series of MOx (M = Co, Ni, Zn, Ce)-modified lamellar MnO2 electrode materials were controllably synthesized with a superfast self-propagating technology and their electrochemical practicability was evaluated using a three-electrode system. The results demonstrated that the specific capacitance varied with the heteroatom type as well as the doping level. The low ZnO doping level was more beneficial for improving electrical conductivity and structural stability, and Mn10Zn hybrid nanocrystals exhibited a high specific capacitance of 175.3 F·g−1 and capacitance retention of 96.9% after 2000 cycles at constant current of 0.2 A·g−1. Moreover, XRD, SEM, and XPS characterizations confirmed that a small part of the heteroatoms entered the framework to cause lattice distor-tion of MnO2, while the rest dispersed uniformly on the surface of the carrier to form an interfacial collaborative effect. All of them induced enhanced electrical conductivity and electrochemical prop-erties. Thus, the current work provides an ultrafast route for development of high-performance pseudocapacitive energy storage nanomaterials.

Duke Scholars

Published In

Nanomaterials

DOI

EISSN

2079-4991

Publication Date

July 1, 2021

Volume

11

Issue

7

Related Subject Headings

  • 1007 Nanotechnology
  • 0912 Materials Engineering
 

Citation

APA
Chicago
ICMJE
MLA
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Li, L., Li, J., Li, H., Lan, L., & Deng, J. (2021). Highly effective self-propagating synthesis of lamellar ZnO-decorated MnO2 nanocrystals with improved supercapacitive performance. Nanomaterials, 11(7). https://doi.org/10.3390/nano11071680
Li, L., J. Li, H. Li, L. Lan, and J. Deng. “Highly effective self-propagating synthesis of lamellar ZnO-decorated MnO2 nanocrystals with improved supercapacitive performance.” Nanomaterials 11, no. 7 (July 1, 2021). https://doi.org/10.3390/nano11071680.
Li, L., et al. “Highly effective self-propagating synthesis of lamellar ZnO-decorated MnO2 nanocrystals with improved supercapacitive performance.” Nanomaterials, vol. 11, no. 7, July 2021. Scopus, doi:10.3390/nano11071680.

Published In

Nanomaterials

DOI

EISSN

2079-4991

Publication Date

July 1, 2021

Volume

11

Issue

7

Related Subject Headings

  • 1007 Nanotechnology
  • 0912 Materials Engineering