Carbon microspheres with micro- and mesopores synthesized via spray pyrolysis for high-energy-density, electrical-double-layer capacitors

2019 ◽  
Vol 365 ◽  
pp. 193-200 ◽  
Author(s):  
Yongju Yoo ◽  
Gi Dae Park ◽  
Yun Chan Kang
Keyword(s):  
Energy Density ◽  
Spray Pyrolysis ◽  
Double Layer ◽  
Electrical Double Layer ◽  
High Energy ◽  
High Energy Density ◽  
Carbon Microspheres ◽  
Electrical Double Layer Capacitors ◽  
Double Layer Capacitors

Nanospace-confined synthesis of oriented porous carbon nanosheets for high-performance electrical double layer capacitors

2016 ◽  
Vol 4 (43) ◽  
pp. 16879-16885 ◽  
Author(s):  
Ya Wang ◽  
Hui Dou ◽  
Bing Ding ◽  
Jie Wang ◽  
Zhi Chang ◽  
...  
Keyword(s):  
Energy Density ◽  
Porous Carbon ◽  
Electrical Double Layer ◽  
High Performance ◽  
Three Dimensional ◽  
High Energy ◽  
High Energy Density ◽  
Carbon Nanosheets ◽  
Electrical Double Layer Capacitors ◽  
Double Layer Capacitors

A symmetric capacitor based on facilely synthesized three-dimensional oriented porous carbon nanosheets delivers high energy density.

scholarly journals High Performance Graphene-Based Electrochemical Double Layer Capacitors Using 1-Butyl-1-methylpyrrolidinium tris (pentafluoroethyl) trifluorophosphate Ionic Liquid as an Electrolyte

Electronics ◽  
2018 ◽  
Vol 7 (10) ◽  
pp. 229 ◽  
Author(s):  
Jacob D. Huffstutler ◽  
Milinda Wasala ◽  
Julianna Richie ◽  
John Barron ◽  
Andrew Winchester ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Energy Density ◽  
Double Layer ◽  
Specific Energy ◽  
High Energy ◽  
High Energy Density ◽  
Electrochemical Double Layer Capacitors ◽  
Electrochemical Double Layer ◽  
High Specific Energy ◽  
Double Layer Capacitors

There are several advantages to developing electrochemical double-layer capacitors (EDLC) or supercapacitors with high specific energy densities, for example, these can be used in applications related to quality power generation, voltage stabilization, and frequency regulation. In this regard, ionic liquids capable of providing a higher voltage window of operations compared to an aqueous and/or polymer electrolyte can significantly enhance the specific energy densities of EDLCs. Here we demonstrate that EDLCs fabricated using ionic liquid 1-butyl-1-methylpyrrolidinium tris (pentafluoroethyl) trifluorophosphate (BMP-FAP) as an electrolyte and few layer liquid-phase exfoliated graphene as electrodes show remarkable performance compared to EDLC devices fabricated with aqueous potassium hydroxide (6M) as well as widely used ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate (BMIM-PF6). We found that graphene EDLC’s with BMP-FAP as an electrolyte possess a high specific energy density of ≈25 Wh/kg along with specific capacitance values as high as 200 F/g and having an operating voltage windows of >5 volts with a rapid charge transfer response. These findings strongly indicate the suitability of BMP-FAP as a good choice of electrolyte for high energy density EDLC devices.

Acid-free synthesis of oxygen-enriched electroactive carbon with unique square pores from salted seaweed for robust supercapacitor with attractive energy density

2018 ◽  
Vol 20 (21) ◽  
pp. 4983-4994 ◽  
Author(s):  
Chunfeng Xue ◽  
Lin Feng ◽  
Yanan Hao ◽  
Fujuan Yang ◽  
Qian Zhang ◽  
...  
Keyword(s):  
Energy Density ◽  
Double Layer ◽  
Electric Double Layer ◽  
High Energy ◽  
High Energy Density ◽  
Double Layer Capacitors ◽  
Electric Double Layer Capacitors

Oxygen-enriched electroactive carbon with unique square pores is prepared by carbonizing salted seaweed and shows high energy density in electric double-layer capacitors.

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