Electrochemical behavior of carbon aerogels derived from different precursors

Conference · Sat Apr 01 04:00:00 EST 1995

OSTI ID:148675

Pekala, R W; Alviso, C T; Nielson, J K; Tran, T D ^[1]; Reynolds, G M; Dresshaus, M S ^[2]

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1. Lawrence Livermore National Lab., CA (United States)
2. Massachusetts Inst. of Tech., Cambridge, MA (United States). Dept. of Physics

The ability to tailor the structure and properties of porous carbons has led to their increased use as electrodes in energy storage devices. Our research focuses on the synthesis and characterization of carbon aerogels for use in electrochemical double layer capacitors. Carbon aerogels are formed from the sol-gel polymerization of (1) resorcinol-formaldehyde or (2) phenolic-furfural, followed by supercritical drying from carbon dioxide, and subsequent pyrolysis in an inert atmosphere. These materials can be produced as monoliths, composites, thin films, powders, or microspheres. In all cases, the areogels have an open-cell structure with an ultrafine pore size (<100 nm), high surface area (400-1 100 m{sup 2}/g), and a solid matrix composed of interconnected particles, fibers, or platelets with characteristic dimensions of 10 nm. This paper examines the effects of the carbon precursor and processing conditions on electrochemical performance in aqueous and organic electrolytes.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 148675
• Report Number(s): UCRL-JC--120317; CONF-950412--58; ON: DE96002639
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
36 MATERIALS SCIENCE
CAPACITANCE
CAPACITIVE ENERGY STORAGE EQUIPMENT
CAPACITORS
CARBON
DENSITY
FABRICATION
FORMALDEHYDE
FURFURAL
GELS
MATERIALS
PHENOLS
PHYSICAL PROPERTIES
PRECURSOR
RESORCINOL
SOL-GEL PROCESS