Polypyrrole (PPy) nanospheres are successfully assembled on the surface of multiwalled carbon nanotubes (MWNTs) with the aid of PMo_12-xW_x (mixture of phosphomolybdic acid andphosphotungstic acid with molar ratio of 3:1) as both oxidant and the redox dopant. The resulting multi-walled carbon nanotubes (MWNTs)/PPy nanocomposites (MPNs) exhibited a well-defined core-shell structure, leading to the fast and efficient transmission/transfer of both electrolyte ions and electrons. An intrinsic increase in electrochemical performance of the nanocomposites has been achieved by the combination of the double-layer and the Faradaic capacitance originated from both PPy and PMo_12-xW_x. In a typical three-electrode system, MPN10 (the mass ratio of MWNT: pyrrole is 10:90) can provide the highest specific capacitance of 570F/g. Moreover, in a typical two-electrode symmetric system with MPN10 as electrodes and polyvinyl alcohol (PVA)-H₂SO₄ gel as electrolyte, the supercapacitor device exhibited a specific and areal capacitance of 93F/g and 466 mF/cm², respectively and showed an outstanding cycling stability after 10000 cycles.

借助PMo _12-x W _x（摩尔比为3：1的磷钼酸和磷钨酸的混合物）作为氧化剂和氧化还原掺杂剂，成功地将聚吡咯（PPy）纳米球组装在多壁碳纳米管（MWNT）的表面上。所得的多壁碳纳米管（MWNT）/ PPy纳米复合材料（MPN）表现出明确的核-壳结构，从而导致电解质离子和电子的快速有效传输/转移。通过双层和法拉第电容的组合，实现了纳米复合材料电化学性能的内在提高，所述法拉第电容源自PPy和PMo _12-x W _x。在典型的三电极系统中，MPN10（MWNT与吡咯的质量比为10:90）可以提供最高的570F / g的比电容。此外，在典型的以MPN10为电极和聚乙烯醇（PVA）-H ₂ SO ₄凝胶为电解质的两电极对称系统中，超级电容器器件的比电容和面电容分别为93F / g和466 mF / cm ²。并在10000次循环后显示出出色的循环稳定性。