Abstract: A secondary battery comprising a positive electrode, a negative electrode, and an electrolyte is improved in discharge performance by forming the positive electrode from a composite electrode material including a conductive organic polymer and a dischargeable metal oxide and/or metal chalcogenide.

Abstract: A new approach for efficient current collection is provided for a nonaqueous electrolyte secondary cell comprising a positive electrode having a polyaniline or conductive organic polymer as an active material, a negative electrode, a nonaqueous electrolyte, and an outer casing having these components received therein. The positive electrode is affixed to the inner surface of an outer casing segment associated with the positive electrode through a conductive adhesive layer having carbon powder dispersed in a base polymer. The cell can recover from an over-discharged state.

Abstract: A longitudinal quartz crystal resonator which creates an extremely small amount of vibrational leakage. Quartz is a highly stable material physically and chemically. A so-called quartz crystal resonator formed of quartz therefore has a low series resistance and a high Q-value. Such excellent characteristics are, however, obtained on the condition that the quartz crystal resonator is designed so as to produce a less leakage of vibration. Energy of a vibrational portion is trapped within itself by contriving and improving a configuration of a supporting portion of the longitudinal quartz crystal resonator which is incorporated with the vibrational portion and the supporting portion by an etching method.