Structure and dynamics in low-dimensional guest-host systems. Progress report, June 1, 1990--May 31, 1992
- Pennsylvania Univ., Philadelphia, PA (United States). Dept. of Materials Science
New synthetic materials continue to be discovered at a rapid rate. Many of these can be broadly described as guest-host systems, in the sense that a range of compositions is accessible by selectively inserting heteroatoms or molecules into the interstitial sites in an otherwise pure starting material. The premier examples are layer intercalates (graphite, transition metal di- and trichalocogenides, silicate clays) and doped polymers (notably polyacetylene). With a somewhat broader definition of intercaiation, one might include the high-{Tc} cuprate superconductors (variable oxygen and alkaline earth concentrations), ion-exchanged beta-alumina and related defect oxides, and alkali metal-doped buckminsterfullerene (C{sub 60}). The interest in these material families for energy applications is directly attributable to the guest-in-a-host feature, either by exploiting guest ion mobility in electrochemical devices or by tuning/optimizing properties via control of guest concentration and sublattice structure. This document is a progress report covering the first 25 months (6/89 to 7/91) of the present 3-year period. Part IV describes the proposed research 6/1/92--5/31/95.
- Research Organization:
- Pennsylvania Univ., Philadelphia, PA (United States). Dept. of Materials Science and Engineering
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG02-86ER45254
- OSTI ID:
- 10147900
- Report Number(s):
- DOE/ER/45254-7; ON: DE92014841
- Resource Relation:
- Other Information: PBD: Apr 1992
- Country of Publication:
- United States
- Language:
- English
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