Issue 7, 2022

A graphdiyne oxide composite membrane for active electrolyte enhanced supercapacitors with super long self-discharge time

Abstract

Active electrolyte enhanced supercapacitors (AEESCs) are considered as promising tools for enhancing power capacity due to their high specific capacitance and simple construction. However, there are many challenges, such as severe self-discharge (SDC) and rapid capacity decay. Herein, we develop a novel strategy to fabricate AEESCs with the suppression of rapid SDC, in which a self-assembled composite membrane of graphdiyne oxide/polyvinyl alcohol (GDYO/PVA) is used as a separator. The new AEESCs show a SDC time of 37160 s (1.0 V–0.3 V), which is 153 times higher than that of commercial separators, as well as an excellent capacitance retention of 95.1% after 8000 cycles. The outstanding electrochemical performance of the GDYO/PVA composite membrane can be attributed to the inherent nano-network structure, excellent proton conductivity, and high selectivity of GDYO. This new strategy of a self-assembled composite membrane based on GDYO will provide new opportunities for constructing AEESCs with super long self-discharge time and high performance.

Graphical abstract: A graphdiyne oxide composite membrane for active electrolyte enhanced supercapacitors with super long self-discharge time

Supplementary files

Article information

Article type
Paper
Submitted
15 set 2021
Accepted
08 jan 2022
First published
11 jan 2022

J. Mater. Chem. C, 2022,10, 2821-2827

A graphdiyne oxide composite membrane for active electrolyte enhanced supercapacitors with super long self-discharge time

N. Liang, X. Wu, Y. Lv, J. Guo, X. Zhang, Y. Zhu, H. Liu and D. Jia, J. Mater. Chem. C, 2022, 10, 2821 DOI: 10.1039/D1TC04406K

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