Non-aqueous electrolyte secondary battery

A non-aqueous electrolyte secondary battery, comprising:

• a positive electrode including a mixture layer containing a positive electrode active material, a binder agent, and a carbon material as a conductive agent;
• a negative electrode;
• and
• a non-aqueous electrolyte, wherein
• the mixture layer contains, as the positive electrode active material, an olivine-type lithium phosphate represented by the formula LiMPO4, where M is at least one element selected from the group consisting of Co, Ni, Mn, and Fe, and a lithium-containing transition metal oxide containing at least Co;
• Ni or Mn, and the content of the olivine-type lithium phosphate is within the range of from 50 weight % to 99 weight % with respect to the total weight of the olivine-type lithium phosphate and the lithium-containing transition metal oxide.

A non-aqueous electrolyte secondary battery for use as a power source for regenerative charging, comprising:

• a positive electrode including a mixture layer containing a positive electrode active material, a binder agent, and a carbon material as a conductive agent;
• a negative electrode;
• and
• a non-aqueous electrolyte, wherein
• the mixture layer contains, as the positive electrode active material, an olivine-type lithium phosphate represented by the formula LiMPO4, where M is at least one element selected from the group consisting of Co, Ni, Mn, and Fe, and a lithium-containing transition metal oxide containing at least Ni and Mn.

A non-aqueous electrolyte secondary battery for use as a power source for regenerative charging, comprising:

• a positive electrode including a mixture layer containing a positive electrode active material, a binder agent, and a carbon material as a conductive agent;
• a negative electrode;
• and
• a non-aqueous electrolyte, wherein
• the mixture layer contains, as the positive electrode active material, an olivine-type lithium phosphate represented by the formula LiMPO4, where M is at least one element selected from the group consisting of Co, Ni, Mn, and Fe, and a lithium-containing transition metal oxide containing at least Co, Ni or Mn, and the content of the olivine-type lithium phosphate is within the range of from 50 weight % to 99 weight % with respect to the total weight of the olivine-type lithium phosphate and the lithium-containing transition metal oxide.