High-Capacity Electric Double-Layer Capacitor with High-Density-Activated Carbon Fiber Electrodes

2000 ◽  
Vol 147 (1) ◽  
pp. 38 ◽  
Author(s):  
Hiroyuki Nakagawa ◽  
Atsushi Shudo ◽  
Kouichi Miura

2006 ◽  
Vol 158 (2) ◽  
pp. 1510-1516 ◽  
Author(s):  
Hirokazu Oda ◽  
Akira Yamashita ◽  
Shinsaku Minoura ◽  
Masahiro Okamoto ◽  
Tatsuya Morimoto




Holzforschung ◽  
2020 ◽  
Vol 74 (6) ◽  
pp. 577-588 ◽  
Author(s):  
Nutthira Pakkang ◽  
Manish Kumar ◽  
Shogo Taira ◽  
Keiichi Koda ◽  
Kengo Shigetomi ◽  
...  

AbstractThis article demonstrates the development of activated carbon fiber electrodes produced from hardwood kraft lignin (HKL) to fabricate electric double layer capacitors (EDLCs) with high energy and power densities using an ionic liquid (IL) electrolyte. A mixture solution of HKL, polyethylene glycol as a sacrificial polymer, and hexamethylenetetramine as a crosslinker in dimethylformamide/acetic acid (6/4) was electrospun, and the obtained fibers were easily thermostabilized, followed by carbonization and steam activation to yield activated carbon fibers (ACFs). The electrochemical performance of EDLCs assembled with the ACFs, 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIBF4) as an IL electrolyte and a cellulosic separator was insufficient due to the low conductivity of the electrode. The conductivity of the electrode was improved successfully by spraying conductive carbon black (CB) onto the fibers mat during electrospinning. The CB containing electrodes with improved conductivity gave the resulting EDLCs a higher electrochemical performance, with an energy density of 91.5 Wh kg−1 and a power density of 76.2 kW kg−1.



2009 ◽  
Vol 70 (3-4) ◽  
pp. 738-744 ◽  
Author(s):  
Xiaojun He ◽  
Jiangwei Lei ◽  
Yejing Geng ◽  
Xiaoyong Zhang ◽  
Mingbo Wu ◽  
...  


2007 ◽  
Vol 10 (11) ◽  
pp. A245 ◽  
Author(s):  
Masaru Yao ◽  
Kazuki Okuno ◽  
Tsutomu Iwaki ◽  
Masahiro Kato ◽  
Shigeo Tanase ◽  
...  




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