Spray-coated paper supercapacitors  

作　　者：Mehmet Girayhan Say Robert Brooke Jesper Edberg Andrea Grimoldi Dagmawi Belaineh Isak Engquist Magnus Berggren 

机构地区：[1]Laboratory of Organic Electronics,Department of Science and Technology,Linköping University,SE-60174,Norrköping,Sweden [2]RISE Research Institutes of Sweden,Bio-and Organic Electronics,Bredgatan 35,SE-60221,Norrköping,Sweden [3]Wallenberg Wood Science Center,ITN,Linköping University,SE-60174,Norrköping,Sweden

出　　处：《npj Flexible Electronics》2020年第1期142-148,共7页npj-柔性电子（英文）

摘　　要：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(0.22Ω),thus resulting in a high power density(∼104 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.

关 键 词：COATING PRINTING ELECTROLYTE 

分 类 号：TG1[金属学及工艺—金属学]