Spray-coated paper supercapacitors
Spray-coated paper supercapacitors
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DOI：
10.1038/s41528-020-0079-8
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发表时间：
2020-07-08
影响因子：
14.6
通讯作者：
Berggren, Magnus
中科院分区：
文献类型：
--
作者：
Say, Mehmet Girayhan;Brooke, Robert;Berggren, Magnus
我们社会对进一步电气化和数字化的日益增长的需求提出了对绿色电能存储技术的需求，该技术可以在非常小的、分布广泛的电能来源之间扩展到非常大的容量。此类技术必须与快速吞吐量、大批量和低成本的制造工艺兼容，例如使用印刷和涂层技术。在这里，我们演示了制造超级电容器的顺序生产方案，包括基于纤维素纳米纤丝 (CNF) 和导电聚合物 PEDOT:PSS 的电极。薄而轻的纸电极、碳粘合层和凝胶电解质分别使用喷涂、丝网印刷和棒涂来制造。这些全固态超级电容器具有柔韧性、机械强度和低等效串联电阻（0.22 欧姆），从而实现高功率密度（类似于 10(4)W/kg）能源技术。超级电容器组合并连接到电源管理电路，以演示智能封装应用。这项工作表明，可操作和嵌入式超级电容器的制造方式可以允许与智能包装解决方案等集成，从而在高度分布式应用中实现供电、有源物联网 (IoT) 设备。
The increasing demands to further electrify and digitalize our society set demands for a green electrical energy storage technology that can be scaled between very small, and heavily distributed electrical energy sources, to very large volumes. Such technology must be compatible with fast-throughput, large-volume and low-cost fabrication processes, such as using printing and coating techniques. Here, we demonstrate a sequential production protocol to fabricate supercapacitors including electrodes based on cellulose nanofibrils (CNF) and the conducting polymer PEDOT:PSS. Thin and lightweight paper electrodes, carbon adhesion layers and the gel electrolyte are fabricated using spray coating, screen printing, and bar coating, respectively. These all solid-state supercapacitors are flexible, mechanically robust and exhibit a low equivalent series resistance (0.22 ohm), thus resulting in a high power density (similar to 10(4)W/kg) energy technology. The supercapacitors are combined and connected to a power management circuit to demonstrate a smart packaging application. This work shows that operational and embedded supercapacitors can be manufactured in a manner to allow for the integration with, for instance smart packaging solutions, thus enabling powered, active internet-of-things (IoT) devices in a highly distributed application.