Abstract: The invention concerns a solid polymer electrolyte comprising a polymer matrix comprising at least one ionic salt, the polymer matrix comprising at least one polyalkene carbonate, at least one second polymer different from the polyalkene carbonate polymer, and at least one alkene carbonate coming from the decomposition of the polyalkene carbonate. The present invention also concerns a method for preparing the solid polymer electrolyte and a battery comprising the solid polymer electrolyte.

Abstract: The invention relates to a material including a support consisting of a porous composite material including at least one polymer phase forming a binder based on at least one polymer selected from thermoplastic polymers, elastomers, and elastomer thermoplastics, and at least one filler selected from thermally conductive fillers, the pores of the support consisting of the porous composite material being partially or entirely filled with at least one phase-change material. The invention also relates to a method for producing said material.

Abstract: Provided is a process for the degradation of at least one polymer of an alkene carbonate, a polymeric composition for a lithium-ion battery electrode having a degradation residue obtained by this process, a process for the preparation thereof, an electrode and a battery incorporating it and a degradation process for the sintering of ceramics. The degradation process includes a reaction at 120° C. and 270° C., and under air of a primary amine with a poly(alkene carbonate) polyol, which depolymerizes it in order to obtain a non-polymeric degradation residue. This composition includes an active material, an electrically conductive filler, a polymeric binder and a residue from the degradation under air between 120° C. and 270° C. of a sacrificial phase which includes the polymer and which has been melt blended beforehand with the active material, with the filler and with the binder in order to obtain a precursor mixture of the composition.

Abstract: Provided is a process for the degradation of at least one polymer of an alkene carbonate, a polymeric composition for a lithium-ion battery electrode having a degradation residue obtained by this process, a process for the preparation thereof, an electrode and a battery incorporating it and a degradation process for the sintering of ceramics. The degradation process includes a reaction at 120° C. and 270° C., and under air of a primary amine with a poly(alkene carbonate) polyol, which depolymerizes it in order to obtain a non-polymeric degradation residue. This composition includes an active material, an electrically conductive filler, a polymeric binder and a residue from the degradation under air between 120° C. and 270° C. of a sacrificial phase which includes the polymer and which has been melt blended beforehand with the active material, with the filler and with the binder in order to obtain a precursor mixture of the composition.

Abstract: Porous polymeric materials having a very high content of thermally conductive and/or electrically conductive fillers. Process for the preparation of the porous composite material including at least one binder-forming polymeric phase and one or more fillers, this process including the stages of hot mixing, by the molten route, the polymeric phase, the fillers and a sacrificial polymeric phase, so as to obtain a mixture, of shaping the mixture and of removing the sacrificial polymeric phase.

Abstract: A process for preparing a polymeric composition for forming a lithium-ion or sodium-ion battery electrode or a supercapacitor electrode or for exhibiting magnetic properties, to such a polymeric composition obtained by means of this process, to a mixture which is a precursor of the composition, obtained by means of a first mixing step of the process, and to this electrode. The process for preparing this composition comprises: a) hot-mixing, via the melt process and without solvent, at least one active material, a binder-forming polymeric phase and a sacrificial polymeric phase so as to obtain a mixture, and b) at least partially eliminating said sacrificial polymeric phase so as to obtain said composition which comprises the active material(s) according to a weight fraction greater than 80%. The sacrificial phase is used in step a) according to a weight fraction in the mixture being greater than or equal to 15%.

Abstract: Provided is a process for the degradation of at least one polymer of an alkene carbonate, a polymeric composition for a lithium-ion battery electrode having a degradation residue obtained by this process, a process for the preparation thereof, an electrode and a battery incorporating it and a degradation process for the sintering of ceramics. The degradation process includes a reaction at 120° C. and 270° C., and under air of a primary amine with a poly(alkene carbonate) polyol, which depolymerizes it in order to obtain a non-polymeric degradation residue. This composition includes an active material, an electrically conductive filler, a polymeric binder and a residue from the degradation under air between 120° C. and 270° C. of a sacrificial phase which includes the polymer and which has been melt blended beforehand with the active material, with the filler and with the binder in order to obtain a precursor mixture of the composition.

Abstract: Porous polymeric materials having a very high content of thermally conductive and/or electrically conductive fillers. Process for the preparation of the porous composite material including at least one binder-forming polymeric phase and one or more fillers, this process including the stages of hot mixing, by the molten route, the polymeric phase, the fillers and a sacrificial polymeric phase, so as to obtain a mixture, of shaping the mixture and of removing the sacrificial polymeric phase.

Abstract: The invention relates to a material including a support consisting of a porous composite material including at least one polymer phase forming a binder based on at least one polymer selected from thermoplastic polymers, elastomers, and elastomer thermoplastics, and at least one filler selected from thermally conductive fillers, the pores of the support consisting of the porous composite material being partially or entirely filled with at least one phase-change material. The invention also relates to a method for producing said material.

Abstract: A process for preparing a polymeric composition for forming a lithium-ion or sodium-ion battery electrode or a supercapacitor electrode or for exhibiting magnetic properties, to such a polymeric composition obtained by means of this process, to a mixture which is a precursor of the composition, obtained by means of a first mixing step of the process, and to this electrode. The process for preparing this composition comprises: a) hot-mixing, via the melt process and without solvent, at least one active material, a binder-forming polymeric phase and a sacrificial polymeric phase so as to obtain a mixture, and b) at least partially eliminating said sacrificial polymeric phase so as to obtain said composition which comprises the active material(s) according to a weight fraction greater than 80%. The sacrificial phase is used in step a) according to a weight fraction in the mixture being greater than or equal to 15%.