| 摘要 |
PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery preventing small capacity due to reduction in a capacity after reflow soldering compared conventional nonaqueous electrolyte secondary battery corresponding to reflow soldering.SOLUTION: The nonaqueous electrolyte secondary battery includes a positive electrodes 1 containing a vanadium oxide or a lithium-containing vanadium oxide by 30 to 80% so that reaction between the positive electrode 1 and an electrolyte 7 is suppressed, and includes a negative electrode 3 containing a silicon oxide or a silicon by 30 to 80% so that reaction between the negative electrode 3 and the electrolyte 7 is suppressed, thereby providing the nonaqueous electrolyte secondary battery having large discharge capacity after reflow soldering. |
