The present invention relates to a hydrogen sulfide purification method including removing a lithium raw material from a mixed gas which is generated in a process of producing lithium sulfide by a reaction of hydrogen sulfide and the lithium raw material and which includes unreacted hydrogen sulfide and the lithium raw material.

A lithium-sulfide-carbon composite and methods are shown. In one example, the lithium-sulfide-carbon composites are used as an electrode in a battery, such as a lithium ion battery.

A lithium-sulfide-carbon composite and methods are shown. In one example, the lithium-sulfide-carbon composites are used as an electrode in a battery, such as a lithium ion battery.

The present disclosure provides a method of producing a sulfide solid electrolyte material which includes a preparing process of preparing composite particles including a solid solution including a Li.sub.2S component and a LiBr component; an addition process of adding the composite particles and a phosphorus source to a reaction chamber; and a milling process in which a mechanical milling treatment is performed on the composite particles and the phosphorus source in the reaction chamber while thermal energy is applied.

The present disclosure provides a method of producing a sulfide solid electrolyte material which includes a preparing process of preparing composite particles including a solid solution including a Li.sub.2S component and a LiBr component; an addition process of adding the composite particles and a phosphorus source to a reaction chamber; and a milling process in which a mechanical milling treatment is performed on the composite particles and the phosphorus source in the reaction chamber while thermal energy is applied.

Systems and methods are provided for upgrading aromatic refinery fractions by performing trim alkali metal desulfurization. The alkali metal desulfurization can be performed by mixing the aromatic refinery fraction with alkali metal in finely dispersed solid and/or molten form, such as molten sodium. The aromatic nature of the refinery fraction can potentially be beneficial for the desulfurization reaction mechanism. The aromatic refinery fractions can correspond to fractions that have been previously processed to remove metals. Because only trim desulfurization is being performed, the desulfurization can be performed under relatively mild alkali metal desulfurization conditions that result in a reduced or minimized amount of feed conversion.

A method for producing lithium sulfide is provided, including: a preparation step of preparing a composition that, in an X-ray diffraction pattern as measured using an X-ray diffraction apparatus using CuK1 rays, has a diffraction peak A at the position of 2=31.21.0 and a diffraction peak B at the position of 2=22.21.0, and has a value of I.sub.b to I.sub.a of 0.04 or more, where the I.sub.a is an intensity of the diffraction peak A and the I.sub.b is an intensity of the diffraction peak B; and a reaction step of reacting the composition with hydrogen gas.

A hydrogen sulfide purification method includes removing a lithium raw material by using an ejector that utilizes a cleaning liquid as a driving fluid, from a mixed gas containing unreacted hydrogen sulfide and the lithium raw material which is generated in a process of producing lithium sulfide by a reaction of hydrogen sulfide and the lithium raw material.

A hydrogen sulfide purification method includes removing a lithium raw material by using an ejector that utilizes a cleaning liquid as a driving fluid, from a mixed gas containing unreacted hydrogen sulfide and the lithium raw material which is generated in a process of producing lithium sulfide by a reaction of hydrogen sulfide and the lithium raw material.

A hydrogen sulfide purification method includes removing a lithium raw material by using a cyclone, from a mixed gas containing unreacted hydrogen sulfide and the lithium raw material which is generated in a process of producing lithium sulfide by a reaction of hydrogen sulfide and the lithium raw material.