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Lithium polymer battery with high energy density
Author(s) -
Oyama Noboru,
Hatozaki Osamu
Publication year - 2000
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/1521-3900(200007)156:1<171::aid-masy171>3.0.co;2-2
Subject(s) - cathode , organosulfur compounds , battery (electricity) , composite number , copper , materials science , polymer , polyaniline , lithium (medication) , sulfur , chemical engineering , chemistry , inorganic chemistry , composite material , metallurgy , thermodynamics , medicine , power (physics) , physics , engineering , polymerization , endocrinology
Polymer cathode materials based on organosulfur compounds are developed for lithium rechargeable batteries with high energy density. Making a well‐mixed composite with a conducting polymer polyaniline (PAn) accelerates slow redox reactions of organosulfur compounds such as 2,5‐dimercapto‐1,3,4‐thiadiazole (DMcT). Using a copper cathode current collector, battery performances of the DMcT/PAn composite cathode are significantly improved due to a formation of a complex between DMcT and a copper ion: discharge capacity exceeding 225 Ah/kg‐cathode and cyclability more than 500 charge‐discharge cycles being achieved. Furthermore, addition of elemental sulfur (S 8 ) to the composite further augments the discharge capacity of the composite cathode to more than 500 Ah/kg‐cathode.