Three-dimensional (3D) core-shell silver nanowire (Ag NW) - polypyrrole (PPy) nanocomposites are used for the fabrication of supercapacitors. In-situ chemical polymerization of PPy onto Ag NWs results in the formation of diameter tunable, coaxial and 3D nanocomposites. Inner Ag NW core facilitates the charge transfer and PPy shell shows a remarkably high pseudocapacitance. Fabricated Ag NW/PPy nanocomposite has a specific capacitance of 509 F g⁻¹ at a current density of 0.31 A g⁻¹, while the energy and power densities are found to be 4.27 Wh kg⁻¹, 60.7 W kg⁻¹, respectively. For these devices a capacity retention of more than 90% is obtained following 10000 cycles. It is envisaged that the 3D core-shell nanocomposite architecture investigated here can be extended to other conducting polymer and metal nanowire systems.

三维（3D）核-壳银纳米线（Ag NW）-聚吡咯（PPy）纳米复合材料用于制造超级电容器。PPy在Ag NWs上的原位化学聚合导致形成直径可调，同轴和3D纳米复合材料。内部Ag NW核促进了电荷转移，PPy外壳显示出极高的伪电容。制造的银NW /聚吡咯纳米复合材料具有509 F G的特定电容^-1 0.31 A G的电流密度^-1，而能量和功率密度被发现是4.27瓦千克^-1，60.7公斤w ^ ^-1， 分别。对于这些设备，在10000次循环后可获得90％以上的容量保持率。可以设想，此处研究的3D核-壳纳米复合材料体系结构可以扩展到其他导电聚合物和金属纳米线系统。