Issue 11, 2020

Covalent conductive polymer chain and organic ligand ethylenediamine modified MXene-like-{AlW12O40} compounds for fully symmetric supercapacitors, electrochemical sensors and photocatalysis mechanisms

Abstract

We successfully synthesized two kinetically stable covalent polymer chains and ethylenediamine modified MXene-like-{AlW12O40} compounds. According to the energy storage research results, these materials showed high capacitance performance and cycle stability. The capacitance values of the 1-CC (carbon cloth) and 2-CC materials are 478.41 and 625.99 F g−1 (1.0 A g−1), and the capacitance retention is 95.71% and 97.62% after 5000 cycles, respectively. The symmetric water system supercapacitor device was assembled with two 2-CC and achieved an energy density of 6.32 W h kg−1 at 237 W kg−1. Compounds 1 and 2 were used to test the new sensitive current hydrogen peroxide sensor, displaying linear ranges of 1.20–3.20 mM (1-GCE: glassy carbon electrode) and 19.95 μM to 0.90 mM (2-GCE) with a detection limit of 0.93 μM and 0.86 μM, respectively. In addition, the photocatalysis mechanisms of compounds 1 and 2 were studied to provide a powerful basis for the photocatalytic mechanism of this series of compounds.

Graphical abstract: Covalent conductive polymer chain and organic ligand ethylenediamine modified MXene-like-{AlW12O40} compounds for fully symmetric supercapacitors, electrochemical sensors and photocatalysis mechanisms

Supplementary files

Article information

Article type
Paper
Submitted
26 Dec 2019
Accepted
21 Feb 2020
First published
21 Feb 2020

J. Mater. Chem. A, 2020,8, 5709-5720

Covalent conductive polymer chain and organic ligand ethylenediamine modified MXene-like-{AlW12O40} compounds for fully symmetric supercapacitors, electrochemical sensors and photocatalysis mechanisms

L. Gong, X. Qi, K. Yu, J. Gao, B. Zhou and G. Yang, J. Mater. Chem. A, 2020, 8, 5709 DOI: 10.1039/C9TA14103K

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