Drinker Biddle & Reath LLP
Nonaqueous-electrolyte battery and method for producing the same
Provided are a nonaqueous-electrolyte battery in which short circuits between the positive- and negative-electrode layers can be suppressed with certainty and a method for producing the battery. A nonaqueous-electrolyte battery 100 includes a positive-electrode active-material layer 12 containing a Li-containing oxide; a negative-electrode active-material layer 22 on which deposition of Li metal can occur; and a sulfide-solid-electrolyte layer (SE layer) 3 disposed between these active-material layers 12 and 22. The SE layer 3 of the nonaqueous-electrolyte battery 100 includes a powder-formed layer 31 and a dense-film layer 32 formed on a surface of the powder-formed layer 31 by a vapor-phase process. In the nonaqueous-electrolyte battery 100, the powder-formed layer 31 is formed by a compression-molding process on a positive-electrode body including the positive-electrode active-material layer 12 and the dense-film layer 32 is then formed by a vapor-phase process on the positive-electrode body that is provided with the powder-formed layer 31 and serves as a substrate.
Sumitomo Electric Industries, Ltd.
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Tomoharu Yasushi Kazuhiro Mitsuyasu Kentaro
Takeyama Mochida Goto Ueda Yoshida