A calcium, aluminum, and silicon alloy is provided. The alloy includes about 15 to 45% calcium, 20 to 40% aluminum, and 20 to 40% silicon.

A calcium, aluminum, and silicon alloy is provided. The alloy includes about 15 to 45% calcium, 20 to 40% aluminum, and 20 to 40% silicon.

The invention relates to a stabilized lithium metal powder and to a method for producing the same, the stabilized, pure lithium metal powder having been passivated in an organic inert solvent under dispersal conditions with fatty acids or fatty acid esters according to the general formula (I) R—COOR′, in which R stands for C.sub.10-C.sub.29 groups and R′ for H or C.sub.1-C.sub.8 groups.

A negative electrode for a lithium electrochemical generator, wherein it comprises, as active material, a lithium and calcium alloy, wherein the calcium is present in the alloy to the extent of 2% to 34% of atomic.

Calcium ion batteries are provided. The calcium ion batteries include a cathode, an alloying anode composed of one or more intermetallic calcium compounds in electrical communication with the cathode; and an electrolyte disposed between the anode and the cathode. The intermetallic calcium compounds are intermetallic compounds of calcium and transition metals and metalloids.

Calcium ion batteries are provided. The calcium ion batteries include a cathode, an alloying anode composed of one or more intermetallic calcium compounds in electrical communication with the cathode; and an electrolyte disposed between the anode and the cathode. The intermetallic calcium compounds are intermetallic compounds of calcium and transition metals and metalloids.

An anode of a battery comprises lithium metal, and a dopant, in the lithium metal. The anode has a thickness of at most 50 μm, and the dopant is a metal with an electronegativity greater than lithium.

Provided are a negative active material for a lithium secondary battery, a manufacturing method thereof, and a lithium secondary battery including the same, and the present invention may provide a negative active material for a lithium secondary battery including a secondary particle in which a plurality of silicon nanoparticles are aggregated; and a plurality of metal particles distributed in pores in the secondary particle, a manufacturing method thereof, and a lithium secondary battery including the same.

Provided are a negative active material for a lithium secondary battery, a manufacturing method thereof, and a lithium secondary battery including the same, and the present invention may provide a negative active material for a lithium secondary battery including a secondary particle in which a plurality of silicon nanoparticles are aggregated; and a plurality of metal particles distributed in pores in the secondary particle, a manufacturing method thereof, and a lithium secondary battery including the same.

Disclosed are high enthalpy thermochemical energy storage materials that exhibit high thermal conductivity and stability at high temperature reaction conditions. Disclosed materials include hydride-based alloys that can undergo high temperature reversible hydrogenation/dehydrogenation reactions without phase change of any metal or metalloid components of the alloy. The materials undergo a reversible exothermic hydrogenation reaction to form a metal hydride and a ternary alloy that includes a high thermal conductivity metal that, in its pure state, would exhibit a phase change at the hydrogenation reaction conditions.