In accordance with the purpose(s) of the present disclosure, as embodied and broadly described herein, the disclosure, in one aspect, relates to inorganic solid electrolytes and synthesis of inorganic solid electrolytes. The electrolytes have the general formula A.sub.zN.sub.vS.sub.1-yO.sub.yX.sub.5, exhibit superionic conductivity, and can be produced via a relatively fast synthesis route. The electrolytes can be a component of different types of batteries.

In accordance with the purpose(s) of the present disclosure, as embodied and broadly described herein, the disclosure, in one aspect, relates to inorganic solid electrolytes and synthesis of inorganic solid electrolytes. The electrolytes have the general formula A.sub.zN.sub.vS.sub.1-yO.sub.yX.sub.5, exhibit superionic conductivity, and can be produced via a relatively fast synthesis route. The electrolytes can be a component of different types of batteries.

Silicon subhalide-containing composite particles along with processes for producing and uses for the same. Where the silicon subhalide-containing composite particles have a Si content >30% by weight. Wherein the silicon is placed in and on the pores of a porous matrix. The silicon subhalide-containing composite particles include a halogen concentration of 0.0003 to 16% by weight, a pH of 3 to 9, a volume-weighted particle size distribution having diameter percentiles d.sub.50 of 0.5 to 20 m, and a specific BET surface area of at most 170 m.sup.2/g.

Silicon subhalide-containing composite particles along with processes for producing and uses for the same. Where the silicon subhalide-containing composite particles have a Si content >30% by weight. Wherein the silicon is placed in and on the pores of a porous matrix. The silicon subhalide-containing composite particles include a halogen concentration of 0.0003 to 16% by weight, a pH of 3 to 9, a volume-weighted particle size distribution having diameter percentiles d.sub.50 of 0.5 to 20 m, and a specific BET surface area of at most 170 m.sup.2/g.