摘要:
The present invention relates to an alkaline cation-conducting ceramic membrane covered, over at least a portion of the surface thereof, with a cation-conducting organic polyelectrolyte layer that is insoluble and chemically stable in pH-basic water. The invention also relates to an electrochemical device including such a membrane as a solid electrolyte in contact with a liquid electrolyte formed of an alkali metal hydroxide aqueous solution.
摘要:
The invention relates to the use of a ceramic of formula Ba2(1−x)M2xIn2(1−y)M′2yO4+δ(OH)δ′ where M represents at least one metal cation with an oxidation number II or III or a combination thereof, M′ represents at least one metal cation with an oxidation number III, IV, V or VI or a combination thereof, 0
摘要:
The present invention relates to a rechargeable accumulator comprising one or more metal-air cells, each cell comprising a first terminal (1) and a second terminal (2), a metallic negative electrode (3) for metal-air cell, connected to the first terminal (1), a first positive electrode (4) for releasing oxygen, a second positive electrode (5) which is a porous air electrode containing at least one oxygen reducing catalyst, an electrolyte, control means (6) suitable for continuously comparing the voltage measured between the terminal (2) and the terminal (1) with a setpoint value and for dispatching a switching signal to the switching means (7) when the measured voltage becomes smaller than the setpoint value, switching means (7) suitable for receiving a switching signal originating from the control means (6) and for connecting and disconnecting the air electrode (5) of the second terminal (2). The present invention also relates to a method using such an accumulator.
摘要:
The present invention relates to a precursor of a negative electrode compartment for rechargeable metal-air batteries, comprising a rigid casing (1), at least one solid electrolyte membrane (2), a protective covering (5), completely covering the inside face of the solid electrolyte membrane (2), a metallic current collector (3) applied against the inside face of the protective covering (5), preferably also a block (4) of elastic material applied against the current collector and essentially filling the entire internal space defined by the walls of the rigid casing and the solid electrolyte (2), and a flexible electronic conductor (6) passing in a sealed manner through one of the walls of the rigid casing. The present invention also relates to a negative electrode compartment having a rigid casing obtained from said precursor and to a battery containing such a negative electrode compartment.
摘要:
The invention relates to a half-cell including an electrode formed of an electron collector containing one or more transition metals from groups 4 to 12 of the Period Table of the Elements, and of an electrochemically active material present on the surface of the electron collector in the form of a nanostructured conversion film containing nanoparticles having an average diameter of between 1 nm and 1000 nm. The electrochemically active material contains at least one compound of the transition metal or the transition metals present in the electron collector. The invention further includes a continuous film of a lithium-ion conductive, solid electrolyte that is water- and air-impermeable and that is deposited directly onto, covering totally, the surface of the nanostructured active material of the electrode. The continuous film of solid electrolyte having a thickness of between 1 μm and 50 μm.