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Solid Composite Polymer Electrolytes with High Cation Transference Number
Author(s) -
Mazor Hadar,
Golodnitsky Diana,
Rosenberg Yuri,
Peled Emanuel,
Wieczorek Wladek,
Scrosati Bruno
Publication year - 2008
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1560/ijc.48.3-4.259
Subject(s) - electrolyte , chemistry , ionic conductivity , polymer , conductivity , electrochemistry , cyclic voltammetry , composite number , lithium (medication) , inorganic chemistry , chemical engineering , materials science , electrode , composite material , organic chemistry , engineering , medicine , endocrinology
This work presents the electrochemical and structural study of the dual modified composite LiBOB‐based polymer electrolyte. Modification has been carried out by calix[6]pyrrole (CP) anion trap and nanosize silica filler. The main advantage of the use of LiBOB salt is the high ionic conductivity at near‐ambient temperatures and low solid‐electrolyte interphase (SEI) resistance. The conductivity of LiBOB:PEO 20 :CP 0.125 with SiO 2 is slightly lower than 10 −5 Scm −1 at 30 °C, a value higher by about two orders of magnitude than that of the semi‐crystalline LiCF 3 SO 3 (LiTf)‐PEO system. At 75 to 90 °C the bulk ionic conductivity of modified LiBOB polymer electrolyte approaches 1 mScm −1 . The transference number of dual‐modified LiBOB‐polymer electrolyte is about 0.8 at 75 °C. Cyclic voltammetry tests showed a wide electrochemical stability window of the composite polymer electrolyte. The peak power of Li/MoO x S y cell with the polymer electrolyte film containing CP and SiO 2 reaches 2.2 mW/cm 2 and 3.0 mW/cm 2 at 90 and 110 °C, respectively.