Issue 15, 2024

Advanced MnOx/MnWO4 hetero-nanoflakes with abundant oxygen vacancies for high-performance flexible asymmetric supercapacitors with high energy density

Abstract

FSCs have attracted considerable attention owing to their high power density, long cycling lifespan and high environmental friendliness. However, the low capacitance of anode materials restricts the development of FSCs. Herein, novel MnOx/MnWO4@C nanoflakes with the optimal W-doping content were successfully achieved, which integrated abundant oxygen vacancies induced by W-doping, high electrical conductivity by conductive carbon layers and high surface area by the ultra-large nanoflake morphology. Benefiting from the synergistic effect of abundant redox active centers, fast charge mobility and good structural stability, MnOx/MnWO4@C anodes exhibit outstanding electrochemical performances with a high specific capacitance of 888.63 mF cm−2 at 0.1 mA cm−2, a predominant rate capacity of 173.3 mF cm−2 at an ultrahigh current density of 80 mA cm−2. More impressively, the FSCs assembled with MnOx/MnWO4@C anodes and NCM-41 cathodes provide a high energy density of 48.49 mW h cm−2 at a power density of 4320 mW cm−2 and long cycling stability, which highlights their great potential for high energy storage.

Graphical abstract: Advanced MnOx/MnWO4 hetero-nanoflakes with abundant oxygen vacancies for high-performance flexible asymmetric supercapacitors with high energy density

Supplementary files

Article information

Article type
Paper
Submitted
18 Jan 2024
Accepted
03 Mar 2024
First published
05 Mar 2024

CrystEngComm, 2024,26, 2087-2095

Advanced MnOx/MnWO4 hetero-nanoflakes with abundant oxygen vacancies for high-performance flexible asymmetric supercapacitors with high energy density

Y. Yin, J. Wang, S. Chen, N. Han, Z. Chen, Y. Jing, Y. Zhang, J. Xu and Z. Li, CrystEngComm, 2024, 26, 2087 DOI: 10.1039/D4CE00052H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements