کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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6471165 | 1424115 | 2017 | 7 صفحه PDF | دانلود رایگان |
Three-dimensional flexible nitrogen-doped carbon monoliths (3DNC) were prepared by one-step carbonization method of commercially available melamine foam. The carbonization temperature effect on the electrochemical performance of nitrogen-doped carbon monoliths was investigated. With the increase of carbonization temperature, the specific capacitance of binder-free 3DNC electrode intensifies up to 221 F gâ1 at a current density of 0.5 A gâ1 at 950 °C in 2 M NaOH and weaken for higher temperature, which can be explained by the balance between nitrogen doping concentration and the specific surface area at different carbonization temperature. Further, the optimized 3DNC exhibits 96% retention after 5000 cycles measurements, indicating its superior long-term stability. Moreover, the assembled symmetric device outputs the maximum energy density of 9.34 Wh kgâ1 as well as the maximum power density of 6.9 kW kgâ1. These results demonstrate the potential application of the designed 3DNC structures for energy storage devices.
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Journal: Electrochimica Acta - Volume 242, 10 July 2017, Pages 100-106