Building a high-performance supercapacitor with α-MnO2@nitrided TiO2/carbon fiber paper porous structure

被引：0

作者：

Su X. ^{[1
]}

Xie Q. ^{[1
]}

He Q. ^{[1
]}

Yu L. ^{[1
]}

Luo G. ^{[1
]}

机构：

[1] Guangzhou Key Laboratory of Clean Transportation Energy Chemistry, School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou

来源：

Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2022年 / 39卷 / 04期

关键词：

Composite material; Hierarchical hybrid structure; High mass loading; Hydrothermal synthesis; Nanophase materials; Supercapacitor; TiO[!sub]2[!/sub; Α-MnO[!sub]2[!/sub;

D O I：

10.13801/j.cnki.fhclxb.20210707.001

中图分类号：

学科分类号：

摘要：

MnO2 is considered as a promising electrode material for supercapacitors because of its low cost, high abundance, large theoretical specific capacitance and environmentally friendly nature. How to obtain high-performance MnO2 electrode material with high mass loading via a low-cost synthesis method has attracted considerable attention and still remained a huge challenge. Herein, nitrided TiO2 nanorod arrays (N-TiO2) were successfully prepared on carbon fiber paper (CFP) by a novel seeded hydrothermal synthesis and thermal nitridation, and then hierarchical porous α-MnO2 nanoflowers entwined with nanoribbons were grown on the nitrided TiO2/CFP electrode. Hierarchical porous nanoflowers entwined with nanoribbons and nanorod arrays provide appropriate geometries and electronic structures, helping suppress stack tendency at high mass loading and improve the specific capacitance of electrode. The α-MnO2@N-TiO2/CFP electrode with high mass-loading of 20.9 mg·cm−2 shows a high areal capacitance of 3.0 F·cm−2 at 1 mA·cm−2 and excellent cycling stability with no capacitance reduction after 5000 cycles. The high performance makes the α-MnO2@N-TiO2/CFP electrode a promising electrode material for supercapacitor applications. Copyright ©2022 Acta Materiae Compositae Sinica. All rights reserved.

引用

页码：1628 / 1637

页数：9

共 31 条

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