三维石墨烯骨架负载镍纳米线复合超轻超级电容器电极
Three-dimensional graphene skeletons supported nickel molybdate nanowire composite as novel ultralight electrode for supercapacitors
摘要：
采用水热法在化学气相沉积法生长的三维石墨烯骨架上制备了NiMoO（$_{4}$）纳米线。X射线衍射和拉曼光谱结果表明，NiMoO $_{4}$为$α$相。这种无粘合剂的超轻石墨烯/ NiMoO $_{4}$复合材料用作超级电容器的正极。该电极在12 mA cm $^{-2}$下的比电容为1194 F g $^{-1}$，1000次循环后的循环效率为97.3%。此外，在1319 W kg $^{-1}$的稳定功率密度下，能量密度达到41 Wh kg $^{-1}$的能量密度。这些结果证明了所设计的复合材料在未来柔性和轻质储能方面的潜力。
英文摘要：
Nickel molybdate (NiMoO$_{4}$) nanowires were prepared on chemical-vapor-deposition-grown three-dimensional graphene skeletons by hydrothermal method. The X-ray diffraction and Raman results show that NiMoO$_{4}$ is $α$ phase. This binder-free and ultralight graphene/ NiMoO$_{4}$ composite was used as a positive electrode for supercapacitors. This electrode presents a high specific capacitance of 1194 F g$^{-1}$ at 12 mA cm$^{-2}$ and the good stability with a cycling efficiency of 97.3% after 1000 cycles. Further, the energy density reaches an energy density of 41 Wh kg$^{-1}$ at a steady power density of 1319 W kg$^{-1}$. These results demonstrate the potential of the designed composite for the future flexible and lightweight energy storage.
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