| 摘要 |
PURPOSE: To provide a lithium secondary battery which produces high voltages, has a high energy density and a large charge/discharge capacity, secures safety, and has long cycle life. CONSTITUTION: In a lithium secondary battery comprising a negative electrode 10 composed chiefly of a negative electrode active material holder, a positive electrode 12 which can make a reversible electrochemical reaction with lithium ions, and a lithium-ion-conductive nonaqueous electrolyte or a liquid-impregnated polymer electrolyte, a manganese silicide is used as the negative electrode active material holder. Examples of the manganese silicide are Mn15 Si26 , MnSi, or Mn5 Si3 . |
