摘要:
The invention pertains to a process for manufacturing a fluoropolynner film comprising a fluoropolymer hybrid organic/inorganic composite, said process comprising the following steps: (i) providing a mixture of: - at least one fluoropolymer [polymer (F)]; - at least one metal compound [compound (M)] having formula: X 4-m AY m wherein m is an integer from 1 to 4, A is a metal selected from the group consisting of Si, Ti and Zr, Y is a hydrolysable group and X is a hydrocarbon group, optionally comprising one or more functional groups; - a liquid medium consisting essentially of at least one ionic liquid (IL) and, optionally, at least one additive (A); - optionally, at least one electrolytic salt (ES); and - optionally, at least one organic solvent (S); (ii) hydrolysing and/or polycondensing said compound (M) to yield a liquid mixture comprising fluoropolymer hybrid organic/inorganic composite comprising inorganic domains and incorporating said liquid medium; (iii) processing a film from the liquid mixture obtained in step (ii); and (iv) drying and then, optionally, curing the film obtained in step (iii) for obtaining the fluoropolymer film. The invention also pertains to the fluoropolymer film obtained from said process and to use of said fluoropolymer film in electrochemical and photo-electrochemical devices.
摘要:
The invention relates to compounds comprising a redox group, to the use thereof as an additive to an electrolyte composition, to an electrolyte composition including such an additive, and to electrochemical systems including such an electrolyte composition, in particular lithium or sodium batteries and supercapacitors having a double electric layer.
摘要:
The invention relates to a lithium and vanadium oxide having formula Li1+xV3O8, wherein 0.1 ≤ x ≤ 0.25. Said oxide has a monoclinic crystalline structure and comprises non-agglomerated grains in the form of moncrystalline pellets having a length L of between 1 and 100νm, a width l such that 4 ∫L/l ∫100, and a thickness e such that 4 L/e ∫100, with e
摘要:
The invention relates to a method for preparing a lithium and vanadium oxide and the thus obtained products consisting in preparing a precursor gel by reacting hydrogen peroxide with V2O5-α in an aqueous medium in the presence of a lithium precursor and in exposing said gel to a heat treatment in an oxidant atmosphere at a temperature ranging from 260 °C to 580 °C. A compound of a formula Li1+α V3O8, (0,1=α= 0,25) consists of needle-shaped grains having a bimodal distribution, wherein the length (L) of the first distribution needles ranges from 10 to 50 νm and the length (L) of the second distribution needles ranges from 1 to 10 νm. When l is the grain width, L the length and e the thickness thereof, said dimensions are such as 4
摘要:
The present invention pertains to an electrode-forming composition, to use of said electrode-forming composition in a process for the manufacture of an electrode, to said electrode and to an electrochemical device comprising said electrode. The electrode-forming composition comprises at least one partially fluorinated fluoropolymer comprising recurring units derived from at least one fluorinated monomer and at least one functional hydrogenated monomer comprising at least one carboxylic acid end group, at least one electro-active compound, at least one liquid medium comprising at least one organic carbonate or at least one ionic liquid, and at least one metal salt.