Facile synthesis of diverse transition metal oxide nanoparticles and electrochemical properties

Hao Zhang; Xiaofeng Wang; Chengcheng Chen; Cuihua An; Yanan Xu; Yanying Dong; Qiuyu Zhang; Yijing Wang; Lifang Jiao; Huatang Yuan

doi:10.1039/C6QI00096G

Facile synthesis of diverse transition metal oxide nanoparticles and electrochemical properties†

Hao Zhang,^a Xiaofeng Wang,^a Chengcheng Chen,^a Cuihua An,^a Yanan Xu,^a Yanying Dong,^a Qiuyu Zhang,^a Yijing Wang,*^ab Lifang Jiao^a and Huatang Yuan^a

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* Corresponding authors

^a College of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE), Nankai University, Tianjin 300071, P. R. China
E-mail: wangyj@nankai.edu.cn
Fax: +86 22 23503639

^b Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, P. R. China

Abstract

We herein report a facile method for synthesizing a series of metal oxides from the mixture of oleylamine and metal nitrates with heating at 180 °C. Several diverse nanoparticles with various morphologies are gained expectedly: 16.5 nm Mn₃O₄ nano-capsules, 22 nm CoO nano-cubes, 35 nm NiO nano-flowers and 4 nm Fe₃O₄ quantum dots. This method is convenient for preparing the dispersed nanoparticles at mild reaction temperature with low-cost metal sources. As-prepared CoO nano-cubes are employed as the electrode material of a pseudocapacitor in terms of implementation. The specific capacitance reaches a stable level of 750 F g⁻¹. This material also exhibits a superior performance in high rate capability and maintains an excellent stability during 9000 recycles. The asymmetric supercapacitor device with a maximum voltage of 1.7 V is fabricated using CoO nano-cubes as the positive and activated carbon as the negative electrode.

Inorganic Chemistry Frontiers

Facile synthesis of diverse transition metal oxide nanoparticles and electrochemical properties†

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Facile synthesis of diverse transition metal oxide nanoparticles and electrochemical properties

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