Abstract: An electrochemical cell and a method of manufacturing the electrochemical cell are provided. The method includes: spraying a precursor solution on an anode, the precursor solution including a metal salt dissolved in a solvent and the anode being at a temperature of 250° C. or greater; reacting the metal salt on the anode to form a buffer layer; and attaching a solid-state electrolyte to the buffer layer.

Abstract: A buffered negative electrode-electrolyte assembly includes: a porous negative electrode comprising a metal, a transition metal nitride, or a combination thereof; a solid-state electrolyte; and a buffer layer between the porous negative electrode and the solid-state electrolyte. The buffer layer comprising a buffer composition according to Formula (1) MmNnZzHhXx. The buffer composition has an electronic conductivity that is less than or equal to 1×10-2 times an electronic conductivity of the solid-state electrolyte, and the buffer composition has an ionic conductivity less than or equal to 1×10-6 times an ionic conductivity of the solid-state electrolyte.

Abstract: A buffered negative electrode-electrolyte assembly includes: a porous negative electrode comprising a metal, a transition metal nitride, or a combination thereof; a solid-state electrolyte; and a buffer layer between the porous negative electrode and the solid-state electrolyte. The buffer layer comprising a buffer composition according to Formula (1) MmNnZzHhXx. The buffer composition has an electronic conductivity that is less than or equal to 1×10?2 times an electronic conductivity of the solid-state electrolyte, and the buffer composition has an ionic conductivity less than or equal to 1×10?6 times an ionic conductivity of the solid-state electrolyte.

Abstract: A buffered negative electrode-electrolyte assembly includes: a porous negative electrode comprising a metal, a transition metal nitride, or a combination thereof; a solid-state electrolyte; and a buffer layer between the porous negative electrode and the solid-state electrolyte. The buffer layer comprising a buffer composition according to Formula (1) MmNnZzHhXx. The buffer composition has an electronic conductivity that is less than or equal to 1×10?2 times an electronic conductivity of the solid-state electrolyte, and the buffer composition has an ionic conductivity less than or equal to 1×10?6 times an ionic conductivity of the solid-state electrolyte.

Abstract: A lithium ion conductor includes a compound of Formula 1: Li7-a*?-(b-4)*?-xMa?La3Zr2-?Mb?O12-x-?XxN???Formula 1 wherein in Formula 1, Ma is a cationic element having a valence of a, Mb is a cationic element having a valence of b, and X is an anion having a valence of ?1, wherein, when Ma comprises H, 0???5, otherwise 0???0.75, and wherein 0???1.5, 0?x?1.5, (a*?+(b?4)?+x)>0, and 0<??6.

Abstract: A component for a lithium battery including a first layer including a lithium garnet having a porosity of 0 percent to less than 25 percent, based on a total volume of the first layer; and a second layer on the first layer and having a porosity of 25 percent to 80 percent, based on a total volume of the second layer, wherein the second layer is on the first layer and the second layer has a composition that is different from a composition of the first layer.