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CMK-5-Based High Energy Density Electrical Double Layer Capacitor for AC Line Filtering.
Nayoung Ji1, Jinwoo Park1, Woong Kim1
1Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea.
ACS Omega
|November 19, 2019
Summary
Researchers developed advanced electrical double layer capacitors (EDLCs) using ordered mesoporous carbon (CMK-5) and carbon nanotubes (SWNTs). These EDLCs achieve high energy density for AC line filtering, potentially replacing traditional capacitors.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Electrical double layer capacitors (EDLCs) offer potential for AC line filtering, but require higher energy density.
- Conventional aluminum electrolytic capacitors are bulky and may be replaced by compact EDLCs.
Purpose of the Study:
- To enhance the energy density of EDLCs for AC line filtering applications.
- To investigate the role of carbon pore structure in EDLC performance.
Main Methods:
- Fabrication of EDLCs using ordered mesoporous carbon (CMK-5) and single-walled carbon nanotubes (SWNTs).
- Characterization of EDLCs for areal energy density and power performance.
- Analysis of pore structure and electrical conductivity effects on ion transport.
Main Results:
- Achieved the highest reported areal energy density for EDLCs.
- Demonstrated sufficient power performance for AC line filtering.
- Identified bimodal mesoporosity and compatible pore sizes as key for high capacitance and voltage.
- High electrical conductivity and ordered pores facilitated ion movement for high power density.
Conclusions:
- The developed CMK-5/SWNT EDLCs show superior performance for AC line filtering.
- Carbon pore structure is a critical factor for enhancing EDLC performance.
- This advancement contributes to the development of next-generation AC line filtering technologies.
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