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Cho, Jaephil
Nano Energy Storage Materials Lab (NESM)
Research Interests
  • Li-ion battery, metal-air battery, redox-flow battery, flexible battery .


Static B-11 NMR studies of the short range order in alkali metal modified B2S3 glasses

DC Field Value Language Cho, Jaephil ko Martin, SW ko Meyer, B ko Kim, KH ko Torgeson, DR ko 2014-07-30T00:26:14Z - 2014-07-28 ko 2000-05 -
dc.identifier.citation JOURNAL OF NON-CRYSTALLINE SOLIDS, v.270, no.1-3, pp.205 - 214 ko
dc.identifier.issn 0022-3093 ko
dc.identifier.uri -
dc.identifier.uri ko
dc.description.abstract The B-11 NMR spectra of xRb(2)S + (1 - x)B2S3 glasses in the range 0 less than or equal to x less than or equal to 0.75 and of xCs(2)S + (1 - x)B2S3 glasses in the range 0 less than or equal to x less than or equal to 0.60 are reported. The addition of Rb2S to B2S3 creates on average approximately two and one-half tetrahedral borons for each added sulfur ion, whereas It is found that the addition of Cs2S creates approximately 2 tetrahedral borons for each added sulfur ion. This behavior while more similar to that seen in the alkali borate glasses, contrasts that seen in the Na and K thioborate glasses, where six to eight and three, respectively, tetrahedral borons are formed for every sulfide anion added to the glass. These findings are supported by the IR and B-11 NMR spectra of the di-thioborate polycrystals (c-Rb2S:2B(2)S(3) and c-Cs2S:2B(2)S(3)) whose structures appear to be comprised of two BS4 tetrahedrals and two BS3 trigonals (N-4 similar to 0.5) like that in the alkali di-borate phases for both Rb and Cs. Unlike the B-11 NMR resonances of the sodium thioborate glasses where a single sharp line is observed for the tetrahedral boron site and a single quadrupolar broadened line is observed for all the trigonal sites, a third resonance line is observed at high alkali fractions for the rubidium and cesium thioborate glasses. This new structural feature may arise from asymmetric MBS2 (meta-thioborate groups) or tetrahedral boron groups possessing a non-bridging sulfur. ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher ELSEVIER SCIENCE BV ko
dc.subject XNA2S+(1-X)B2S3 GLASSES ko
dc.subject BORATE GLASSES ko
dc.subject POLYCRYSTALS ko
dc.subject XK(2)S+(1-X)B2S3 ko
dc.subject SYSTEM ko
dc.title Static B-11 NMR studies of the short range order in alkali metal modified B2S3 glasses ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-0000664689 ko
dc.identifier.wosid 000087244300023 ko
dc.type.rims ART ko
dc.description.wostc 8 *
dc.description.scopustc 8 * 2015-05-06 * 2014-07-28 *
dc.identifier.doi 10.1016/S0022-3093(99)00958-8 ko
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