Negative electrode for nickel-metal hydride secondary battery and sealed nickel-metal hydride secondary battery using the same

摘要

PPROBLEM TO BE SOLVED: To provide a negative electrode for a nickel-hydrogen secondary battery capable of preventing a short circuit caused in the battery when an element for the purpose of enhancing the performance of the battery is included in either or both of its positive and negative electrodes. PSOLUTION: This negative electrode 26 for a nickel-hydrogen secondary battery contains: a hydrogen storage alloy; and lithium manganate having a composition expressed by general formula: LiSBx/SBMnSB2-y/SBMSBy/SBOSB4/SB, wherein Mn elements are partially replaced with other elements. In the formula, (x) and (y) are numerical values defined by 0x1.2 and 0y2; and M is a substituted element. PCOPYRIGHT: (C)2005,JPO&NCIPI