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Titolo:
EVIDENCE FOR ION-PAIRS AND OR TRIPLE IONS FROM TRANSPORT MEASUREMENTSIN MIXED-ALKALI POLYETHER ELECTROLYTES/
Autore:
LASCAUD S; PERRIER M; ARMAND M; PRUDHOMME J; KAPFER B; VALLEE A; GAUTHIER M;
Indirizzi:
UNIV MONTREAL,DEPT CHEM MONTREAL PQ H3C 3J7 CANADA UNIV MONTREAL,DEPT CHEM MONTREAL PQ H3C 3J7 CANADA INST RECH HYDRO QUEBEC,IREQ VARENNES PQ J3X 1S1 CANADA
Titolo Testata:
Electrochimica acta
fascicolo: 10-11, volume: 43, anno: 1998,
pagine: 1407 - 1414
SICI:
0013-4686(1998)43:10-11<1407:EFIAOT>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
STATE CURRENT FLOW; POLYMER ELECTROLYTES; CELLS;
Keywords:
POLY(ETHYLENE OXIDE); LIN(CF3CO)(2); LIN(CF3SO2)(2); LI[CF3SO2N(CH2)(3)OCH3]; MIXED-ALKALI;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
10
Recensione:
Indirizzi per estratti:
Citazione:
S. Lascaud et al., "EVIDENCE FOR ION-PAIRS AND OR TRIPLE IONS FROM TRANSPORT MEASUREMENTSIN MIXED-ALKALI POLYETHER ELECTROLYTES/", Electrochimica acta, 43(10-11), 1998, pp. 1407-1414

Abstract

This work concerns amorphous poly(ethylene oxide) (PEO) rubbery electrolytes with new lithium salts, LiN(CF3CO)(2) and Li[CF3SO2N(CH2)(3)OCH3] (LiMPSA), which contain carbonyl or ether groups in their anions. Although these salts are markedly less conductive than LiN(CF3SO2)(2) or LiClO4, one of them (LiMPSA) yields a large fraction of a species that promotes lithium transport through back, diffusion under polarization in Li/PEO-LiX/Li symmetrical cells. Polarization experiments carried out on similar cells filled with PEO-LiX-KX, mixed-alkali electrolytes show that this species is a LIX2- complex of lower mobility than Lif in PEG. In turn, these experiments reveal that LiN(CF3CO)(2) yieldsa large fraction of LiX ion pairs more mobile than Li+ in PEG. These features, which are founded on theoretical models for polarization of PEO-LIX-KX electrolytes between lithium electrodes, agree with other properties (T-g elevation and conductivity) of the present systems. (C)1998 Published by Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/04/20 alle ore 11:23:25