摘要:
A positive electrode active material for a lithium secondary cell having a high energy density and excellent in charging/discharging cycle performance, and a lithium secondary cell having a high energy density and excellent in charging/discharging cycle performance are disclosed. A positive electrode active material for a lithium secondary cell is characterized in that the composition of the active material is LixMnaNibCocO2 (where a, b, and c are values of a point (a, b, c) on a side of or inside a quadrilateral ABCD having vertexes A(0.5, 0.5, 0), B(0.55, 0.45, 0), C(0.55, 0.15, 0.30), and D(0.15, 0.15, 0.7)) on a ternary state diagram showing the relationship among a, b, and c, and satisfy the expressions 0.95
摘要:
A thin battery and a monolithic thin battery, wherein in an anode collector plate (3) and in a cathode collector plate (4) left are parts (31, 41) not provided with active materials, electrolytes and sealing agents (2a, 2b). On one side of each of the collector plates (3, 4), provided are terminal pieces (53, 54). Since the parts (31, 41) function as heat dissipating fins, excellent heat dissipation can be performed.
摘要:
A depolarizing mixture for primary and secondary batteries, which contains a compound which contains heteroatoms in its molecule to constitute a polar molecule and functions as a dispersing agent so that both a positive active material and a conductive material can be dispersed uniformly in the mixture.
摘要:
A high performance secondary battery which excels in the characteristics of its charge and discharge cycles and in its long-term reliability by virtue of its improved composite positive electrode, its improved electrolyte, and its improved composite negative electrode. In the secondary battery, the electrolyte is of a macromolecule compound having an ionic conductivity and containing one or more kinds of ionic compounds in a fused state. The composite positive and negative electrodes have the above macromolecule compound as their component material.
摘要:
A lithium secondary battery provided with a positive electrode (3), an electrolyte layer (2) made of a macromolecule solid electrolyte, and a negative electrode (1) using metallic lithium or lithium alloy as an active material. The electrolyte layer comprises at least two sublayers. One sublayer (21) of the layer is in contact with the negative electrode and is made of an electrolyte hard to react on the active material of the negative electrode. The other sublayer (22) is made of an electrolyte easy to react on the active material. By the sublayer (21), dendrites of lithium are suppressed from being generated in the negative electrode, and by the other sublayer (22), the growth of dendrites is suppressed and the high conductivity is maintained.
摘要:
A sheet-like separator has an electrolyte dripping speed of 100 mm/hr or less, wherein the values of repellent force on the pouring repellent force curve of pouring of dilute sulfuric acid shown in Fig. 1 are the following: if point S = P kg/dm², point B ≧ 0.55P kg/dm² point C ≧ 0.40P kg/dm² The present invention also provides a valve regulated lead acid battery using the separator.
摘要:
An electrotherapeutic device for passing a DC electric current through a living organism by applying a voltage to the living organism is disclosed. A device is provided with a battery with an internal resistance of high impedance of a degree that the changes in the resistance value of the living organism can be disregarded. By doing so, no excessive flow of current is produced even if the resistance of the living organism fluctuates. The device is safe, easy to handle, and inexpensive. It is particularly suited for use with iontophoresis; a technology by which drugs are administered by means of the passage of electricity.
摘要:
A sodium-sulphur storage battery having improved gastightness is obtained by providing the negative and positive covers (2, 3), which are thermocompressively jointed to the upper and lower surfaces respectively of an alpha alumina ring (1), with diffusion layers of chrome over their surfaces and with coating layers of aluminium on at least the parts of their surfaces which are thermocompressively jointed. As oxidation of the jointing surfaces is minimal, the thermocompressively jointing of the negative and positive covers (2, 3) to the ring (1) can be carried out in air thereby facilitating production of the batteries. The covers (2, 3) may be made from stainless steel, iron or alloy of iron and nickel. The chrome layers may be about 20g to 120µ in thickness, and the aluminium layers may be about 5µ to 90µ in thickness.