Synthesis of Co-containing mesoporous carbon foams using a new cobalt-oxo cluster as a precursor |
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| Authors: | Yao-Kang Lv Yun-Long Feng Li-Hua Gan Ming-Xian Liu Liang Xu Cao Liu Hao-Wen Zheng Jie Li |
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| Institution: | 1. Department of Chemistry, Tongji University, 1239 Siping Road, Shanghai 200092, PR China;2. Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua, Zhejiang 321004, PR China |
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| Abstract: | A novel trinuclear cobalt-oxo cluster 2Co3O(Ac)6(H2O)3]·H2O (Co-OXO) has been obtained and characterized by X-ray single-crystal diffraction and elemental analysis. The structure of Co-OXO displays 3D supramolecular networks through hydrogen bonds and generates boron nitride (bnn) topology. Co-OXO was further used as a precursor to synthesize Co-containing mesoporous carbon foams (Co-MCFs), which exhibit highly ordered mesostructure with specific surface area of 614 m2 g?1 and uniform pore size of 2.7 nm. Charge–discharge tests show that the specific discharge capacitance of Co-MCFs is 7% higher than that of the MCFs at the current density of 100 mA g?1, and 26% higher than that of MCFs at the current density of 3 A g?1. The electrochemical behaviors of Co-MCFs are obviously improved due to the improved wettability, increased graphitization degree and the pseudo-capacitance through additional faradic reactions arising from cobalt. |
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