| abstract |
The present invention relates to solid electrolytes, electrochemical cells including solid electrolytes, and methods of making solid electrolytes. The solid electrolyte includes a compound having a arginite crystal structure represented by Formula 1, wherein in Formula 1, M is Na, K, Fe, Mg, Ca, Ag, Cu, Zr, Zn, or a combination thereof; X is Cl, I, or a combination thereof; and 0≤x<1, 5≤(a+x)<7, 5≤a≤6, 4≤b≤6, 0<(c+d)≤2, and (c /d)>4. Formula 1 Li a M x PS b Br c X d . |