An electrochemical storage cell containing at least one...

Details An electrochemical storage cell containing at least one... An electrochemical storage cell containing at least one...

H - Electricity

01

M

H01M 4/60 (2006.01) H01M 4/02 (2006.01) H01M 10/40 (2006.01) H01M 4/04 (2006.01)

Patent

CA 2270226

An electrochemical storage cell (100) or battery including as at least one electrode (102, 104) at least one electrically conductive polymer, the polymer being poly(3(2-fluorophenyl)thiophene), poly(3(3-fluorophenyl)thiophene), poly(3(2,4-fluorophenyl)thiophene), poly(3(3,4-difluorophenyl)thiophene), poly(3(3,5-difluorophenyl)thiophene), or poly(3(3,4,5- trifluorophenyl)thiophene). These polymeric electrodes (102, 104) have remarkably high charge capacities, and excellent cycling efficiency. The provision of these polymeric electrodes (102, 104) further permits the electrochemical storage cell (as) to be substantially free of metal components, thereby improving handling of the storage cell (100) and obviating safety and environmental concerns associated with alternative secondary battery technology.

La présente invention concerne une cellule d'accumulateur électrochimique (100) ou un accumulateur électrique comportant un polymère électroconducteur constituant au moins une électrode (102, 104). Ce polymère est un poly(3(2-fluorophényl)thiophène), poly(3(3-fluorophényl)thiophène, poly(3(2,4-fluorophényl)thiophène), poly(3(3,4-difluorophényl)thiophène), poly(3(3,5-difluorophényl)thiophène), ou poly(3(3,4,5-trifluorophényl)thiophène). Ces électrodes polymères (102, 104), qui se distinguent par leur capacité de charge élevée, présentent un très bon rendement en matière de cyclage. Ces électrodes polymères (102, 104) permettent en outre de réaliser une cellule d'accumulateur électrochimique sensiblement exempte de parties métalliques, ce qui autorise un meilleur traitement de la cellule d'accumulateur (100), et fait disparaître les craintes nées des techniques utilisées pour les accumulateurs secondaires de secours.

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