Non-aqueous electrolyte secondary battery

A non-aqueous electrolyte secondary battery comprising:

• a positive electrode having a positive electrode mixture layer containing a first positive electrode active material and a second positive electrode active material;
• a negative electrode containing a lithium-titanium composite oxide as a negative electrode active material;
• and
• a non-aqueous electrolyte, wherein
• the first positive electrode active material has a pore volume, of pores each having a pore diameter of 100 nm or less, per mass of 8 mm3/g or more,
• the second positive electrode active material has a pore volume, of pores each having a pore diameter of 100 nm or less, per mass of 5 mm3/g or less,
• the pore volume, of pores each having a pore diameter of 100 nm or less, per mass of the first positive electrode active material is 4 or more times the pore volume, of pores each having a pore diameter of 100 nm or less, per mass of the second positive electrode active material, and
• the content of the first positive electrode active material is 30 mass % or less based on the total amount of the first positive electrode active material and the second positive electrode active material.