| 摘要 |
<p>A non-aqueous electrolyte secondary cell is characterized in that the negative plate is made chiefly of composite particles of which at least part of the core particles containing at least one kind among tin, silicon, and zinc as a constituent element are coated with a solid solution or an intermetallic compound consisting of the constituent element constituting the core particles and at least one element selected from the group consisting of Group 2 elements of the periodic table except the constituent element, transition elements, Group 12 elements, Group 13 elements, and Group 14 elements except carbon and in that the secondary cell includes a non-aqueous electrolyte and a solid electrolyte of polymer gel. Thus, gas is hardly produced even while the secondary cell is stored at high temperatures, the energy density is high, and the cycle life characteristics and high-rate charging/discharging characteristics are excellent.</p> |
