期刊
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
卷 27, 期 2, 页码 220-231出版社
SPRINGER
DOI: 10.1007/s12613-019-1910-x
关键词
few-layer; hexagonal boron nitride; wide-temperature-range operation; cycling performance
类别
资金
- National Natural Science Foundation for Excellent Young Scholars of China [51522402]
- National Postdoctoral Program for Innovative Talents of China [BX20180034]
- National Natural Science Foundation of China [51902020]
- Fundamental Research Funds for the Central Universities [FRF-TP-18-045A1]
- China Postdoctoral Science Foundation [2018M641192]
Currently, developing supercapacitors with robust cycle stability and suitability for wide-temperature-range operations is still a huge challenge. In the present work, few-layer hexagonal boron nitride nanosheets (h-BNNSs) with a thickness of 2-4 atomic layers were fabricated via vacuum freeze-drying and nitridation. Then, the h-BNNSs/reduced graphene oxide (rGO) composite were further prepared using a hydrothermal method. Due to the combination of two two-dimensional (2D) van der Waals-bonded materials, the as-prepared h-BNNSs/rGO electrode exhibited robustness to wide-temperature-range operations from -10 to 50 degrees C. When the electrodes worked in a neutral aqueous electrolyte (1 M Na2SO4), they showed a great stable cycling performance with almost 107% reservation of the initial capacitance at 0 degrees C and 111% at 50 degrees C for 5000 charge-discharge cycles.
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