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Transport number controlled solid electrolytes composed of aluminate polymer complex/LiBF 4 hybrid
Author(s) -
Onishi Ken,
Matsumoto Michiko,
Shigehara Kiyotaka
Publication year - 2000
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/1099-1581(200008/12)11:8/12<539::aid-pat46>3.0.co;2-#
Subject(s) - electrolyte , materials science , ionic bonding , ionic conductivity , lithium (medication) , aluminate , aniline , polymer , battery (electricity) , chemical engineering , inorganic chemistry , ion , chemistry , organic chemistry , electrode , composite material , cement , thermodynamics , medicine , power (physics) , physics , engineering , endocrinology
By the addition of extra salts such as LiBF 4 into a single‐ionic polymer solid electrolyte, poly[lithium bis{endomethyl‐oligo(oxyethylene)oxy}‐oligo(oxyethylene)oxy‐aluminate], the balance of transport number was controlled from t + = 1 ( t − = 0: single‐ionic) to t + ≈ t − ≈ 0.5. Since the state of t + ≈ t − could be realized over a wide concentration range of added LiBF 4 , this type of bi‐ionic conductor could be useful in rechargeable batteries such as ${[\hbox{Li/electrolyte/poly(aniline)}^{+}\hbox{BF}_{4}^{-}]}$ in which the concentration of LiBF 4 fluctuates during the charging/discharging processes by the ingress/egress of Li + and $\hbox{BF}_{4}^{-}$ . The [Li/electrolyte/poly(aniline) + BF 4 − ] battery with transport number controlled electrolyte showed a distinct plateau voltage in discharge curves. Copyright © 2000 John Wiley & Sons, Ltd.