Abstract: The present invention relates to a calcium-based secondary cell containing: an electrolyte arranged between the negative electrode and the positive electrode and comprising a calcium salt of a fluorine-containing anion of formula (XFn)m? wherein n is a positive integer of at most 6 and m is a positive integer of at least 1 and m<n, a positive-electrode active material at the positive electrode which is a one-dimensional structure accommodating Ca2+ ions and has the formula (1): Can+2Me1(n+1)?y?zMe2yMe3zO3n+3??(1) wherein: Me1, Me2, Me3 are different transition metals; 1?n and n is not necessarily an integer; 0?y and y is not necessarily an integer; 0?z and z is not necessarily an integer.

Abstract: The present invention relates to a calcium-based secondary cell comprising, as a positive-electrode active material, a titanium-based material comprising at least titanium (IV) and sulfide.

Abstract: The present invention relates to a calcium-based secondary cell containing: an electrolyte arranged between the negative electrode and the positive electrode and comprising a calcium salt of a fluorine-containing anion of formula (XFn)m? wherein n is a positive integer of at most 6 and m is a positive integer of at least 1 and m<n, a positive-electrode active material at the positive electrode which is a one-dimensional structure accommodating Ca2+ ions and has the formula (1): Can+2Me1(n+1)?y?zMe2yMe3zO3n+3 ??(1) wherein: Me1, Me2, Me3 are different transition metals; 1?n and n is not necessarily an integer; 0?y and y is not necessarily an integer; 0?z and z is not necessarily an integer.

Abstract: A calcium-based secondary cell including, as a positive-electrode active material, a molybdenum oxide-based material containing molybdenum in an oxidation state of 4 or more and 6 or less.

Abstract: A calcium-based secondary cell including a negative electrode that includes a negative-electrode active material, a positive electrode that includes a positive-electrode active material, an electrolyte arranged between the negative electrode and the positive electrode, and a temperature control element. The negative-electrode active material is capable of accepting and releasing calcium ions, and the positive-electrode active material is capable of accepting and releasing calcium ions. The electrolyte includes calcium ions and an electrolyte medium, and is not solid at a temperature of about 20° C. and a pressure of about 1 atm. The electrolyte medium includes a non-aqueous solvent.

Abstract: The present disclosure concerns an electrolyte suitable for calcium-based secondary cells, comprising calcium ions and an electrolyte medium, wherein the electrolyte is not solid at standard conditions and wherein the electrolyte medium includes at least two distinct non-aqueous solvents.

Abstract: A calcium-based secondary cell including, as a positive-electrode active material, a molybdenum oxide-based material containing molybdenum in an oxidation state of 4 or more and 6 or less.

Abstract: A calcium-based secondary cell including a negative electrode that includes a negative-electrode active material, a positive electrode that includes a positive-electrode active material, an electrolyte arranged between the negative electrode and the positive electrode, and a temperature control element. The negative-electrode active material is capable of accepting and releasing calcium ions, and the positive-electrode active material is capable of accepting and releasing calcium ions. The electrolyte includes calcium ions and an electrolyte medium, and is not solid at a temperature of about 20° C. and a pressure of about 1 atm. The electrolyte medium includes a non-aqueous solvent.

Abstract: The present disclosure concerns an electrolyte suitable for calcium-based secondary cells, comprising calcium ions and an electrolyte medium, wherein the electrolyte is not solid at standard conditions and wherein the electrolyte medium includes at least two distinct non-aqueous solvents.

Abstract: A method for preparation of highly porous and preferentially-oriented {100} platinum on a substrate by electrodeposition in a deposition bath, comprising using a deposition potential Edep lower than ERHE+150 mV and an acidified platinum salt solution having a Pt salt concentration less than 5.0 mmole L?1 or, in presence of hydrogen, comprising limiting the concentration of Pt salts in the electrolyte to less than 5.0 mmole L?1 and controlling the temperature of the electrolyte. Preferentially-oriented {100} platinum nanowires and thin films, comprising Pt{100} in a range between about 20 and about 60% and having a roughness factor of at least 50 are produced.

Abstract: A method for preparation of highly porous and preferentially-oriented {100} platinum on a substrate by electrodeposition in a deposition bath, comprising using a deposition potential Edep lower than ERHE+150 mV and an acidified platinum salt solution having a Pt salt concentration less than 5.0 mmole L?1 or, in presence of hydrogen, comprising limiting the concentration of Pt salts in the electrolyte to less than 5.0 mmole L?1 and controlling the temperature of the electrolyte. Preferentially-oriented {100} platinum nanowires and thin films, comprising Pt{100} in a range between about 20 and about 60% and having a roughness factor of at least 50 are produced.