Abstract: This secondary battery is characterized by being provided with: a positive electrode; and a positive electrode lead that is connected to the positive electrode, wherein the positive electrode has a positive electrode collector and a positive electrode active material layer formed in at least one surface of the positive electrode collector, at least one of the surfaces of the positive electrode has a laminated part in which the positive electrode active material layer is formed, and an exposed part in which the positive electrode collector is exposed, and the positive electrode lead has an one-end part connected to the exposed part and an extended part which extends from the one-end part to the outside of the positive electrode. The secondary battery is further provided with an insulating member that has a base material part, a heat resistant and an adhesive part.

Abstract: A secondary battery having a positive electrode with a stacked portion that has a positive electrode current collector and a positive electrode active material layer formed on at least one surface of the current collector, the active material layer being formed on at least one surface of the positive electrode; and an exposed portion where the current collector is exposed. A positive electrode lead includes one end portion that is connected to the exposed portion and an extended portion that extends outward of the positive electrode from the one end portion and further includes a two-layer structured insulating member that has a base layer and a functional layer having a heat resistant portion that includes an inorganic insulating material and an adhesive portion, and the insulating member is arranged on a surface of the positive electrode so the heat resistant portion faces an outer surface of the one end portion.

Abstract: A quartz glass crucible for pulling a single crystal, which comprises a cylindrical straight portion, a bottom portion and a curved intermediate portion for connecting the straight portion and the bottom portion. The straight portion has an opaque area positioned within about 75% or less of the total height of the crucible, measured from the upper open end of the crucible. The opaque area in the straight portion has a total bubble volume which ranges from about 7.times.10.sup.-3 cm.sup.3 /cm.sup.3 to 30.times.10.sup.-3 cm.sup.3 /cm.sup.3. The remaining straight portion, the curved intermediate portion and the bottom portion consist of two layers. One layer is an inner transparent layer having a total volume of bubbles of about 4.times.10.sup.-3 cm.sup.3 /cm.sup.3 or less and corresponds to from about 20% to 60% of the thickness of the crucible, measured from the inside surface thereof. The other layer is an outer opaque layer having a total volume of bubbles ranging between about 7.times.10.sup.-3 cm.sup.