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Titolo:
STRUCTURAL-ANALYSIS OF POLYACENIC SEMICONDUCTOR (PAS) MATERIALS WITH (129)XENON NMR MEASUREMENTS
Autore:
AGO H; TANAKA K; YAMABE T; MIYOSHI T; TAKEGOSHI K; TERAO T; YATA S; HATO Y; NAGURA S; ANDO N;
Indirizzi:
KYOTO UNIV,GRAD SCH ENGN,DEPT MOL ENGN,SAKYO KU KYOTO 60601 JAPAN KYOTO UNIV,GRAD SCH ENGN,DEPT MOL ENGN,SAKYO KU KYOTO 60601 JAPAN KYOTO UNIV,GRAD SCH SCI,DEPT CHEM,SAKYO KU KYOTO 60601 JAPAN KANEBO LTD,BATTERY BUSINESS PROMOT,MIYAKOJIMA KU OSAKA 534 JAPAN
Titolo Testata:
Carbon
fascicolo: 12, volume: 35, anno: 1997,
pagine: 1781 - 1787
SICI:
0008-6223(1997)35:12<1781:SOPS(M>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
XE-129 NMR; PRISTINE; SPECTROSCOPY; BATTERIES; ZEOLITES; CARBONS;
Keywords:
AMORPHOUS CARBON; ELECTRODES; NUCLEAR MAGNETIC RESONANCE (NMR); ADSORPTION; MICROPOROSITY;
Tipo documento:
Article
Natura:
Periodico
Citazioni:
35
Recensione:
Indirizzi per estratti:
Citazione:
H. Ago et al., "STRUCTURAL-ANALYSIS OF POLYACENIC SEMICONDUCTOR (PAS) MATERIALS WITH (129)XENON NMR MEASUREMENTS", Carbon, 35(12), 1997, pp. 1781-1787

Abstract

Structural analysis of the polyacenic semiconductor (PAS) material prepared by the pyrolysis of phenol-formaldehyde resin at relatively lowtemperature (680 degrees C) has been performed by applying Xe-129 nuclear magnetic resonance (NMR) measurements. One can obtain informationon the microporous structure of the PAS material through adsorption of Xe atoms, since a Xe-129 nucleus is a very sensitive probe of its microscopic environment. All the introduced Xe atoms were adsorbed on the internal surface of the pure PAS sample, which indicated remarkably large surface area of the PAS material. The average pore size of the pure PAS sample has been determined to be 7.7+/-1.6 Angstrom from the pressure dependence of the Xe NMR chemical shift. In connection with the application of the PAS material to the electrode of the Li rechargeable battery, changes in the Xe NMR spectrum brought about by extrinsicadditives such as binder, electrolyte solvent, and the doped Li have been investigated. In particular, it has been found that the Li-dopingentirely prevents Xe atoms from entering into the micropores of the PAS material, probably due to adsorption of the solvent molecules on the internal surface of the micropores. (C) 1997 Elsevier Science Ltd.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/01/21 alle ore 03:33:22