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New insight on nanostructure assembling of high-performance electrode materials: synthesis of surface-modified hexagonal β-Ni(OH)2 nanosheets as an example

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Abstract

Hexagonal β-Ni(OH)2 nanosheets with thickness of ∼12 nm were synthesized by a hydrothermal method at 150 °C using nickel chloride as nickel source and morpholine as alkaline. Electrodes for application in pseudocapacitor were assembled through a traditional technique: pressing a mixture of β-Ni(OH)2 nanosheets and acetylene black onto nickel foam. Due to the hexagonal shape of rigid β-Ni(OH)2 nanosheet and the mediation of surface-modified glycerol during electrochemical charge–discharge cycles, a nanostructure of electrode material with facile interior pathway for the transfer of electrolyte was formed. As a result, the as-formed electrodes presented high specific capacitance of 1,917 F g−1 at current density of 1.6 A g−1 in 3 mol L−1 KOH solution. At high charge and discharge current density of 31.3 A g−1, the electrodes still remained a high specific capacitance of 1,289 F g−1. The interesting results obtained from this investigation may provide a new insight for the synthesis of electrode materials with high electrochemical performance.

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Acknowledgments

This work was financially supported by Shandong Provincial Engineering Research Center for Light Hydrocarbon Comprehensive Utilization.

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Authors and Affiliations

  1. Shandong Provincial Engineering Research Center for Comprehensive Utilization of Light Hydrocarbon, College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, China

    Wenle Ma, Junying Xue & Hongtao Cui

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  1. Wenle Ma
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  2. Junying Xue
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  3. Hongtao Cui
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Correspondence to Hongtao Cui.

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Ma, W., Xue, J. & Cui, H. New insight on nanostructure assembling of high-performance electrode materials: synthesis of surface-modified hexagonal β-Ni(OH)2 nanosheets as an example. Ionics 22, 573–579 (2016). https://doi.org/10.1007/s11581-015-1570-4

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  • DOI: https://doi.org/10.1007/s11581-015-1570-4

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