To inhibit decrease in charge discharge, storage and charge discharge cycle characteristics due to reduction of phosphorus atoms in {TAIL ~ a battery} including lithium phosphorus oxynitride as a solid electrolyte, {HEAD ~ a transition metal element} is incorporated into lithium phosphorus oxynitride to prepare a solid electrolyte 
To inhibit decrease in charge discharge , storage and charge discharge cycle characteristics due to reduction of phosphorus atoms in { TAIL ~ a battery } including lithium phosphorus oxynitride as a solid electrolyte , { HEAD ~ a transition metal element } is incorporated into lithium phosphorus oxynitride to prepare a solid electrolyte
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH