Rational design of a high performance all solid state flexible micro-supercapacitor on paper
Rational design of a high performance all solid state flexible micro-supercapacitor on paper
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DOI：
10.1039/c3ra41807c
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发表时间：
2013-08
期刊：
影响因子：
3.9
通讯作者：
Xu Wang;A. Sumboja;W. Foo;Chaojun Yan;K. Tsukagoshi;Pooi See Lee
中科院分区：
文献类型：
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作者：
Xu Wang;A. Sumboja;W. Foo;Chaojun Yan;K. Tsukagoshi;Pooi See Lee
微型超级电容器由于其作为未来集成到自主和便携式设备中的电源的可行性而引起了相当大的关注。然而，传统的芯片实验室制造方法需要多次图案化和金属化过程，而刚性衬底限制了诸如柔性和可穿戴电子产品等应用的多功能性。在这里，我们报告的低成本，简便和可扩展的制造工艺的全固态柔性微型超级电容器的商业上可获得的照片纸的第一次。在叉指电极上电化学沉积三维互连的珊瑚状聚苯胺-氧化锰复合材料。电化学测量表明，高纵横比指状电极图案和小间隙叉指状电极设计对于确保上级性能至关重要。优化后的器件在35 μW cm− 2的功率密度下显示出6.3 μW h cm − 2的超高面能量密度（0.1 mA cm−2时为94.73 mF cm− 2），而在3500 μW cm− 2的功率密度下保持4.8 μW h cm−2（10.0 mA cm− 2时为71.43 mF cm− 2）。同时，它还具有良好的灵活性。这种灵活的微型超级电容器在未来的轻量化、可穿戴或可折叠电子产品中的应用前景广阔。
Micro-supercapacitors have attracted considerable attention due to their feasibility as power supplies for future integration into autonomous and portable devices. However, the conventional lab-on-chip fabrication method requires multiple patterning and metallization procedures, while the rigid substrate restricts versatility in applications such as flexible and wearable electronics. Here, we report the low cost, facile and scalable fabrication process of an all solid state flexible micro-supercapacitor on commercially available photo paper for the first time. Three dimensional interconnected coral-like polyaniline–manganese oxide composite material is electrochemically deposited on the interdigital finger electrodes. Electrochemical measurements reveal that the high aspect ratio finger electrode pattern and small gap interdigital finger electrode design is crucial to ensure superior performance. The optimized device shows an ultra high areal energy density of 6.3 μW h cm−2 at a power density of 35 μW cm−2 (94.73 mF cm−2 at 0.1 mA cm−2), while it maintains 4.8 μW h cm−2 at a power density of 3500 μW cm−2 (71.43 mF cm−2 at 10.0 mA cm−2). Meanwhile, it also has good flexibility. Such a flexible micro-supercapacitor is promising for future applications in lightweight, wearable or foldable electronics.