| abstract |
The invention pertains to rechargeable metal ion cell comprising: - an anode comprising at least one metal; - a charge-carrying electrolyte comprising a charge carrying medium and at least one metal salt; - an organic polymer cathode, wherein said cathode comprises at least one N- substituted polyphenothiazine polymer [polymer (P)], said polymer comprising at least one N-substituted phenothiazine recurring unit of formula: wherein R' is an electron-withdrawing group comprising at least one heteroatom selected from O, S, P and N. |