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US 11,108,041 B2Granted
Nonaqueous electrolyte energy storage device and method for producing the same
AssigneeGS Yuasa International Ltd.
InventorsAkifumi Kikuchi, Ryota Kido
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AssigneeGS Yuasa International Ltd.
InventorsAkifumi Kikuchi, Ryota Kido
Estimating the term…
Provided are a nonaqueous electrolyte energy storage device having high capacity retention ratio after charge-discharge cycles at a high temperature of about 45° C., and a method for producing such a nonaqueous electrolyte energy storage device. One aspect of the present invention is a nonaqueous electrolyte energy storage device including a positive electrode having a positive composite that contains a phosphorus atom and a lithium-transition metal composite oxide containing manganese, wherein, in a spectrum of the positive composite by X-ray photoelectron spectroscopy, a peak position for P2p is observed at 134.7 eV or less. Another aspect of the present invention is a method for producing a nonaqueous electrolyte energy storage device, the method including forming a positive electrode using a positive composite paste that contains a phosphorus oxo acid and a lithium-transition metal composite oxide containing manganese.
A nonaqueous electrolyte energy storage device comprising a positive electrode having a positive composite that contains a phosphorus atom and a lithium-transition metal composite oxide containing manganese,
A nonaqueous electrolyte energy storage device comprising:
A nonaqueous electrolyte energy storage device comprising a positive electrode having a positive composite that contains a lithium-transition metal composite oxide and a phosphorus atom,
Dependencies are inferred from the claim text.