Issue 6, 2020

2.6 V aqueous symmetric supercapacitors based on phosphorus-doped TiO2 nanotube arrays

Abstract

Increasing the voltage window of an electrode material is effective for improving the energy density of aqueous symmetric supercapacitors. Herein, a novel aqueous symmetric supercapacitor equipped with a high cell voltage window of 2.6 V was assembled by P-doped TiO2 nanotube arrays on a Ti sheet. The arrays exhibit a wide potential range of about 1.2 V as the cathode, and a stable wide potential range of 1.4 V as the anode was also obtained. These wide potential windows in the cathode and anode render the symmetric supercapacitor with a very large working voltage window reaching 2.6 V, and thus a high volumetric energy density (1.65 mW h cm−3). These results suggest that P-doped TiO2 nanotube arrays can be promising candidates for energy storage devices.

Graphical abstract: 2.6 V aqueous symmetric supercapacitors based on phosphorus-doped TiO2 nanotube arrays

Supplementary files

Article information

Article type
Paper
Submitted
07 Nov 2019
Accepted
06 Jan 2020
First published
06 Jan 2020

Dalton Trans., 2020,49, 1785-1793

2.6 V aqueous symmetric supercapacitors based on phosphorus-doped TiO2 nanotube arrays

Y. Zhang, S. Duan, Y. Li, S. Zhang, Y. Wu, M. Ma, C. Tao, Z. Zhang, D. Qin and E. Xie, Dalton Trans., 2020, 49, 1785 DOI: 10.1039/C9DT04316K

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