NMR STUDIES ON SELF DIFFUSION COEFFICIENTS OF LITHIUM IONS IN PAN-BASED GEL POLYMER ELECTROLYTES | Zendy

Zirong Li | Zendy; Meng Qing-an | Zendy; GUAN DI-HUA | Zendy; Gang Wang | Zendy

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NMR STUDIES ON SELF DIFFUSION COEFFICIENTS OF LITHIUM IONS IN PAN-BASED GEL POLYMER ELECTROLYTES

Author(s) -

Zirong Li,

Meng Qing-an,

GUAN DI-HUA,

Gang Wang

Publication year - 1999

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.48.1175

Subject(s) - lithium (medication) , self diffusion , ion , diffusion , electrolyte , materials science , polymer , pulsed field gradient , salt (chemistry) , isotopes of lithium , ionic bonding , analytical chemistry (journal) , chemistry , thermodynamics , ion exchange , organic chemistry , physics , medicine , self service , electrode , marketing , business , endocrinology , composite material

The self diffusion coefficients D of lithium ions in PAN-EC/PC-LiClO4 gel polymer electrolytes with different compositions and at different temperatures have been directly measured by field gradient NMR spin echo technique. The results indicated that self diffusion coefficients D of lithium ions were dependent on the mass ratio x% of lithium salt, and had a maxiumum at x=10 in the range of x=5 to 20. It was suggested that this was probably involved with transport mechanisms of the hopping of lithium ions, and with two kinds of interactions: the interaction between Li+ ions and plasticizer EC, and the interaction between Li+ ions and network polymer PAN.

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