Positive electrode mixture paste, positive electrode, nonaqueous electrolyte secondary battery, and manufacturing method of nonaqueous electrolyte secondary battery
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsNobuyuki YAMAZAKI, Masanori KITAYOSHI, Takashi MIURA
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Abstract
In a positive electrode mixture paste manufacturing step, a positive electrode mixture paste is manufactured by further mixing an acid compound, in addition to a positive-electrode active material, a conductive material, a binder, lithium phosphate, and a solvent.
Claims9
A manufacturing method of a nonaqueous electrolyte secondary battery, the manufacturing method comprising:
- manufacturing a positive electrode mixture paste by kneading a positive-electrode active material having an operation upper limit potential of 4.35 V or more on a metallic lithium basis, a conductive material, a binder, lithium phosphate, a solvent, and an acid compound;
- manufacturing a positive electrode including a positive electrode mixture layer on a surface of a current collector member, by applying the positive electrode mixture paste to the surface of the current collector member and drying the positive electrode mixture paste;
- assembling the nonaqueous electrolyte secondary battery by accommodating, in a battery case, the positive electrode, a negative electrode, and a nonaqueous electrolyte containing a compound having fluorine element;
- and
- performing initial charge on the nonaqueous electrolyte secondary battery.
A positive electrode mixture paste obtained by mixing a positive-electrode active material having an operation upper limit potential of 4.35 V or more on a metallic lithium basis, a conductive material, a binder, lithium phosphate, a solvent, and an acid compound.
Dependencies are inferred from the claim text.