Currently, it remains a great challenge to achieve all-solid-state supercapacitors with both high electrochemical performance and excellent stretchability because of the limitations of stretchable electrodes and solid-state electrolytes. Here, we developed all-solid-state supercapacitors by using aligned carbon nanotube/conducting polymer (Ag-doped poly(3,4-ethylenedioxythiophene)–poly(styrenesulfonate)) composites as electrodes and polyvinyl alcohol-based electrolytes. The obtained all-solid-state supercapacitors not only exhibited a high specific capacitance of 64 mF cm⁻² (corresponding to 85.3 F g⁻¹), but could also maintain 98% of their original capacitance even under a tensile strain as high as 480%, which represents the highest value for thin-film all-solid-state supercapacitors using the same electrolyte to date, to the best of our knowledge. The newly developed thin-film supercapacitor maintained 90% of its original capacitance after 100 stretching cycles to a tensile strain of 400% and maintained 93% after stretching to 200% for 2000 cycles, indicating excellent stretching stability. The present work provides an efficient strategy to achieve highly stretchable energy storage devices with high performance.

中文翻译：

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Ag掺杂的PEDOT：PSS / CNT复合材料，用于薄膜全固态超级电容器，可拉伸性达480％†

当前，由于可拉伸电极和固态电解质的局限性，实现兼具高电化学性能和优异可拉伸性的全固态超级电容器仍然是一个巨大的挑战。在这里，我们通过使用对齐的碳纳米管/导电聚合物（掺银的聚（3,4-乙撑二氧噻吩）-聚（苯乙烯磺酸盐））复合材料作为电极和基于聚乙烯醇的电解质，开发了全固态超级电容器。所获得的全固态超级电容器不仅显示出64 mF cm ^-2的高比电容（相当于85.3 F g ^-1），但即使在高达480％的拉伸应变下也可以保持其原始电容的98％，这是迄今为止使用相同电解质的薄膜全固态超级电容器的最高值，这是我们最好的知识。新开发的薄膜超级电容器在100次拉伸循环后达到400％的拉伸应变后仍保持其原始电容的90％，而在2000次循环拉伸至200％后仍保持93％的初始电容。当前的工作提供了一种有效的策略，以实现具有高性能的高度可拉伸的能量存储设备。