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利用固体与分子经验电子理论（EET）计算了LaNi5合金的价电子结构和Co、Mn原子替代LSNi5中部分Ni原子后所形成的各种晶胞情况下连接上下两层原子的主要键的键能。Mn原子替代Ni2原子后上述键能增大，Co原子无论替代Ni1或Ni2都能使相关键能增加，两种原子同时替代，其键能增加更明显。可知：Co和Mn是通过增大连接上下两层原子的主要键的键能达到强化合金、延缓合金粉化，从而提高LaNi5合金的循环寿命。
The valence electron structures of LaNi5 alloy and the bond energies of the main bonds linking the upper and lower two layers of atoms in LaNi5 alloy after substituting Co and Mn atoms for some Ni atoms in LSNi5 were calculated by the solid state and molecular empirical electron theory (EET) . The above bond can be increased after substituting Mn atom for Ni2 atom, Co atom can increase the related bond energy no matter replacing Ni1 or Ni2, and the bond energy can be increased more obviously when the two atoms are replaced at the same time. It can be seen that Co and Mn increase the cycle life of the LaNi5 alloy by increasing the bond strength of the bond between the upper and lower two layers of atoms to strengthen the alloy and retard the alloy pulverization.