Sol-Gel Synthesis and Characterization of Molybdenum Oxide/Polypyrrole Hybrids
Abstract
Monolithic molybdenum oxide/polypyrrole hybrid aerogels and xerogels were successfully synthesized through sol-gel methods. The PPy formed appears to be Beta-substituted. A 100 fold increase in electrical conductivity was observed for the hybrids (4 x 10(exp -3) S/cm) as compared to the pristine MoO3 gels (2 x 10(exp -5) S/cm). An initial increase in Li(+) intercalation capacity is also observed for the hybrid. The electrical conductivity and Li(+) intercalation depend greatly on the concentration of Mo-tricholoro alkoxide precursor and sol aging conditions. The hybrid aerogels have a density of 0.5 g/cc and a surface area of 120 m(sup 2)/g. The as-formed gels are amorphous and crystallize to the orthorhombic MoO3 phase at 375 deg C.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 25, 2001
- Accession Number
- ADA391600
Entities
People
- Bruce Dunn
- Winny Dong
Organizations
- University of California, Los Angeles