A novel Cr2O3-carbon composite as a high performance pseudo-capacitor electrode material

被引：64
作者：
Ullah, Shaheed [1 ]
Khan, Inayat Ali [1 ]
Choucair, Mohammad [2 ]
Badshah, Amin [1 ]
Khan, Ishtiaq [1 ]
Nadeem, Muhammad Arif [1 ]
机构：
[1] Quaid I Azam Univ, Dept Chem, Catalysis & Nanomat Lab 27, Islamabad 45320, Pakistan
[2] Univ Sydney, Sch Chem, Sydney, NSW 2006, Australia
来源：
ELECTROCHIMICA ACTA | 2015年 / 171卷
关键词：
capacitance; polyfurfuryl alcohol; nanoribbons; nanocomposite; METAL-ORGANIC FRAMEWORK; ELECTROCHEMICAL STORAGE; TRIVALENT CHROMIUM; REACTION-MECHANISM; CARBON NANOTUBES; SUPERCAPACITORS; ENERGY; OXIDATION; SEPARATION; REDUCTION;
D O I：
10.1016/j.electacta.2015.04.179
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Novel graphitic material containing chromium oxide (Cr2O3) nanoribbons is obtained by carbonizing a mixture of polyfurfuryl alcohol and MIL-101(Cr) at 900 degrees C. Morphological, structural, and chemical analysis of the product is carried out with HR-TEM, SEM, XPS, XRD, and BET surface area. The maximum BET surface area recorded for the nanocomposite is 438 m(2) g(-1). The nanocomposite exhibits a specific capacitance as high as 300 F g(-1) at 2 mV s(-1) and 291 F g(-1) at 0.25 A g(-1), and presents 95.5% long-term cycling stability over 3000 cycles. The pseudo-capacitive role of Cr2O3 nanoribbons is found to be important towards total capacitance of nanocomposite material. (C) 2015 Elsevier Ltd. All rights reserved.
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页码：142 / 149
页数：8
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