Ultrahigh-voltage integrated micro-supercapacitors with designable shapes and superior flexibility
Ultrahigh-voltage integrated micro-supercapacitors with designable shapes and superior flexibility
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具有可设计形状和卓越灵活性的超高电压集成微型超级电容器
DOI：
10.1039/c8ee02924e
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发表时间：
2019-05-01
影响因子：
32.5
通讯作者：
Bao, Xinhe
中科院分区：
文献类型：
--
作者：
Shi, Xiaoyu;Pei, Songfeng;Bao, Xinhe
随着电源集成电子技术的发展，具有多种创新外形的高压集成微型超级电容器(IMSC)的小型化成为迫切需要但尚未解决的问题。在这里，我们展示了一种通用的、具有成本效益的、工业上适用的协议，用于快速和可扩展地制造基于石墨烯的平面IMSCs，具有形状多样性、美学多功能性、出色的灵活性和卓越的模块化。使用高导电性的石墨烯墨水，我们可以在几秒钟内直接对形状可设计的IMSC进行丝网印刷，在任意衬底上由数百到数千个单独的MSCs组成。由此产生的IMSC没有外部金属集电器和互连以及隔离器，并表现出非凡的双电层电容行为和非凡的灵活性。值得注意的是，IMSC的输出电压和电容可以很容易地通过连接在MSCs的明确配置中进行调整。作为概念验证，具有130个MSCs的串联式IMSCs储能组件可以输出超过100V的记录电压，这表明了卓越的模块化和性能一致性。
With the development of power source-integrated electronics, the miniaturization of high-voltage integrated micro-supercapacitors (IMSCs) with multiple innovative form factors is urgently required but remains unsolved. Here, we demonstrate a universal, costeffective, industrially applicable protocol for fast and scalable fabrication of graphene-based planar IMSCs, with shape diversity, aesthetic versatility, outstanding flexibility and superior modularization. Using highly-conducting graphene ink, we directly screenprint shape-designable IMSCs in several seconds, consisting of hundreds to thousands of individual MSCs on arbitrary substrates. The resulting IMSCs are free of external metal current collectors and interconnects as well as separators, and exhibit exceptional electrical double-layer capacitive behaviors and remarkable flexibility. Notably, the output voltage and capacitance of IMSCs are readily adjustable through connection in well-defined arrangements of MSCs. As a proof of concept, a tandem energy storage pack of IMSCs with 130 MSCs can output a recorded voltage exceeding 100 V, demonstrative of superior modularization and performance uniformity.