Premium
Development of polymer‐based lithium secondary battery
Author(s) -
Oyama Noboru
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(200010)159:1<221::aid-masy221>3.0.co;2-j
Subject(s) - cathode , battery (electricity) , polyaniline , materials science , composite number , electrochemistry , polymer , copper , current collector , current density , lithium (medication) , lithium–sulfur battery , composite material , conductive polymer , chemical engineering , electrode , chemistry , metallurgy , physics , thermodynamics , polymerization , medicine , power (physics) , quantum mechanics , engineering , endocrinology
Novel polymer composites based on polydisulfide compounds are developed as a high energy density cathode material for lithium rechargeable batteries. A polymer composite composed of 2,5‐dimercapto‐1,3,4‐thiadiazole (DMcT) and conducting polymer polyaniline (PAn) on a copper current collector provides high charge density exceeding 225Ah/kg‐cathode with average discharge voltage at 3.4V. The composite cathode showed excellent rate capability and cyclability (>500 cycles). Surface analysis and electrochemical studies indicate that a DMcT‐Cu complex plays an important role in the observed improvement of the battery performances with a copper current collector. Large increase in the charge density to 550Ah/kg‐cathode is achieved by adding elemental sulfur (S 8 ) to the DMcT/PAn composite cathode.