Hand-drawing patterned ultra-thin integrated electrodes for flexible micro supercapacitors
Hand-drawing patterned ultra-thin integrated electrodes for flexible micro supercapacitors
复制标题
用于柔性微型超级电容器的手绘图案化超薄集成电极
DOI：
10.1016/j.ensm.2017.10.009
复制
发表时间：
2018-03-01
影响因子：
20.4
通讯作者：
Li, Huiqiao
中科院分区：
文献类型：
--
作者：
Guo, Kai;Wan, Yuhan;Li, Huiqiao
面内微型超级电容器（sc）具有体积小、易于与片上电子器件集成、功率密度高、充电速度快、循环寿命长等优点，是便携式和可穿戴电子器件的重要储能器件。然而，目前的制造方法需要昂贵的原材料，高成本的设备，并且复杂，不方便制造不同图案的微型SCs，并且难以提高集流器与活性材料之间的结合力。在本工作中，开发了一种低成本、简便、高效和通用的制造柔性微SCs的方法。基于超薄、柔性和高度集成电极的平面内微型SCs，可以通过用油性标记笔直接手绘互补图案，然后依次电沉积Ni集流器和假电容MnO2，轻松获得具有多用途图案的平面内微型SCs。基于超薄和集成的Ni/MnO2电极的图像化微型SCs在多向弯曲循环下具有高能量密度，良好的柔韧性和优异的稳定性。手工绘制辅助方法提供了一种简便的串联和并联多个微型SCs的方法，无需额外的电路，并且可以通过修改手绘图案轻松制作任意形状的微型SCs。此外，所获得的微SCs与不同材料的衬底具有良好的相容性。
In-plane micro supercapacitors (SCs) are important energy storage devices for portable and wearable electronics due to advantages of miniature size, facile integration with on-chip electronics as well as high power density, fast charging rate, and long cycle life. However, current fabrication methods need expensive raw materials, high-cost equipment, and are complex, inconvenient to fabricate micro SCs of different patterns, and difficult to improve the binding force between current collectors and active materials. In this work, a low-cost, facile, efficient and versatile approach is developed for fabricating flexible micro SCs. In-plane micro SCs with versatile patterns based on ultra-thin, flexible and highly integrated electrodes are readily obtained by directly hand-drawing complementary patterns with an oily mark pen and then successively electro-depositing Ni current collectors and pseudocapacitive MnO2. The obtained patterned micro SCs based on ultra-thin and integrated Ni/MnO2 electrodes show a high energy density, good flexibility and superior stability under multi-directional bending cycles. The hand-drawing assisted method provides a facile way to connect multiple micro SCs in series and parallel without additional circuits, and micro SCs of arbitrary shapes can be easily fabricated by modifying hand-drawing patterns. In addition, the obtained micro SCs present good compatibility with substrates of different materials.