Abstract: An electrolyte-separating membrane includes a carrier made of a porous and permeable synthetic thermoplastic material that is larger than 0.8 mm in thickness and an active layer made of a material able to induce insertion and deinsertion reactions for selective transfer of cations through the membrane. The active layer is deposited on the carrier and is hermetic. The material of the active layer may in particular be a molybdenum cluster chalcogenide. The invention aims to provide an electrolyte-separating membrane that is able to transfer cations selectively and that may be manufactured with large dimensions. The invention also relates to a cation transfer method employing this membrane and to a process for manufacturing said membrane, in particular by selective laser sintering of a powdered polymer.

Abstract: An electrolyte-separating membrane includes a carrier made of a porous and permeable synthetic thermoplastic material that is larger than 0.8 mm in thickness and an active layer made of a material able to induce insertion and deinsertion reactions for selective transfer of cations through the membrane. The active layer is deposited on the carrier and is hermetic. The material of the active layer may in particular be a molybdenum cluster chalcogenide. The invention aims to provide an electrolyte-separating membrane that is able to transfer cations selectively and that may be manufactured with large dimensions. The invention also relates to a cation transfer method employing this membrane and to a process for manufacturing said membrane, in particular by selective laser sintering of a powdered polymer.

Abstract: In order to carry out a selective extraction of cations (Mn+) by an electrochemical transfer in a solution from a first electrolyte (E1) to a second electrolyte (E2), the method includes using as an electrolyte separation wall a transfer wall (2) made of chalcogenide with molybdenum clusters (MonXn+2 or MxMonXn+2) and ensuring the cation transfer through the transfer wall by generating a potential difference (?E) between the electrode A1 in the first electrolyte (E1) and the electrode C2 in the second electrolyte (E1) or the transfer wall (2) in order to induce an intercalation of the cations in the transfer wall on the side of the first electrolyte, a scattering of the cations therein, and the de-intercalation thereof in the second electrolyte.

Abstract: An electrolyte separation wall includes an active layer of a material capable of developing intercalation and deintercalation reactions for the selective transfer of cations through the wall and a support layer made of a porous material acting as support for the active layer. A cation selective transfer process uses such a transfer wall. According to a manufacturing process of such a transfer wall, a solution including an active material in powder form, a binder and a solvent are prepared, then the surface of a support layer made of porous material is coated with the solution and the solvent is evaporated.

Abstract: In order to carry out a selective extraction of cations (Mn+) by an electrochemical transfer in a solution from a first electrolyte (E1) to a second electrolyte (E2), the method includes using as an electrolyte separation wall a transfer wall (2) made of chalcogenide with molybdenum clusters (MonXn+2 or MxMonXn+2) and ensuring the cation transfer through the transfer wall by generating a potential difference (?E) between the electrode A1 in the first electrolyte (E1) and the electrode C2 in the second electrolyte (E1) or the transfer wall (2) in order to induce an interleaving of the cations in the transfer wall on the side of the first electrolyte, a scattering of the cations therein, and the de-interleaving thereof in the second electrolyte.