A temperature measurement device includes a heat transfer member including a temperature measuring portion having a flat shape and extending laterally and a heat transfer portion that extends continuously from the temperature measuring portion and transfers heat of the temperature measuring portion, a clamping member that generates a clamping force with the temperature measuring portion, a temperature sensor that is fixed while being in contact with the heat transfer portion, and a resin member that covers and holds the heat transfer portion and the temperature sensor.

A temperature measurement device includes a heat transfer member including a temperature measuring portion having a flat shape and extending laterally and a heat transfer portion that extends continuously from the temperature measuring portion and transfers heat of the temperature measuring portion, a clamping member that generates a clamping force with the temperature measuring portion, a temperature sensor that is fixed while being in contact with the heat transfer portion, and a resin member that covers and holds the heat transfer portion and the temperature sensor.

Separator systems for electrochemical systems providing electronic, mechanical and chemical properties useful for applications including electrochemical storage and conversion. Separator systems include structural, physical and electrostatic attributes useful for managing and controlling dendrite formation and for improving the cycle life and rate capability of electrochemical cells including silicon anode based batteries, air cathode based batteries, redox flow batteries, solid electrolyte based systems, fuel cells, flow batteries and semisolid batteries. Separators include multilayer, porous geometries supporting excellent ion transport properties, providing a barrier to prevent dendrite initiated mechanical failure, shorting or thermal runaway, or providing improved electrode conductivity and improved electric field uniformity, as well as composite solid electrolytes with supporting mesh or fiber systems providing solid electrolyte hardness and safety with supporting mesh or fiber toughness and long life required for thin solid electrolytes without fabrication pinholes or operationally created cracks.

Disclosed herein are a secondary battery configured to be prevented from catching fire or exploding in a critical situation such as overcharging and a method of preventing the secondary battery from catching fire or exploding. Since a separator including a low melting point material is used, a short circuit in the battery occurs when the battery is abnormally heated, and the resistance of an electrode is increased when the temperature of the battery increases to a predetermined temperature or higher. As a result, a positive temperature coefficient (PTC) material is operated at a stable State of Charge (SoC). Consequently, it is possible to prevent the occurrence of a thermal runaway phenomenon of the battery.

The present invention relates to a method for manufacturing a single-layer or multi-layer porous film, said method comprising the following steps: a) providing a flowable first base mixture for a first film layer of the film, the first base mixture comprising a solvent, a filler that is insoluble in the solvent, and a polymeric binder that is dissolved in the solvent; b) forming a film precursor film, the film precursor film comprising at least one sub-layer composed of the first base mixture; c) bringing the film precursor film into contact with a precipitant, the solvent of the first base mixture being soluble in the precipitant, the binder being insoluble in the precipitant, and the binder being precipitated to form the porous film. The invention also relates to a film manufactured using said method, an electrode material manufactured from said film, and an energy storage medium comprising said electrode material.

The present invention relates to a method for manufacturing a single-layer or multi-layer porous film, said method comprising the following steps: a) providing a flowable first base mixture for a first film layer of the film, the first base mixture comprising a solvent, a filler that is insoluble in the solvent, and a polymeric binder that is dissolved in the solvent; b) forming a film precursor film, the film precursor film comprising at least one sub-layer composed of the first base mixture; c) bringing the film precursor film into contact with a precipitant, the solvent of the first base mixture being soluble in the precipitant, the binder being insoluble in the precipitant, and the binder being precipitated to form the porous film. The invention also relates to a film manufactured using said method, an electrode material manufactured from said film, and an energy storage medium comprising said electrode material.

A cell for use in an electrochemical cell, such as a lithium-ion secondary battery that includes a positive electrode with an active material that acts as a cathode and a current collector; a negative electrode with an active material that acts as an anode and a current collector; a non-aqueous electrolyte; and a separator placed between the positive and negative electrodes. At least one of the cathode, the anode, the electrolyte, and the separator includes an inorganic additive in the form of a metal aluminate or a mixture of metal aluminates that absorbs one or more of moisture, free transition metal ions, or hydrogen fluoride (HF) that become present in the cell. One or more of the cells may be combined in a housing to form a lithium-ion secondary battery. The inorganic additive may also be incorporated as a coating applied to the internal wall of the housing.

The present disclosure relates to a lithium metal battery that can easily and effectively remove water and hydrofluoric acid, thereby suppressing a decrease in cell performance and lifespan characteristics or an increase in the internal pressure due to the water and hydrofluoric acid, etc., and a method for manufacturing the same.

The present disclosure relates to a lithium metal battery that can easily and effectively remove water and hydrofluoric acid, thereby suppressing a decrease in cell performance and lifespan characteristics or an increase in the internal pressure due to the water and hydrofluoric acid, etc., and a method for manufacturing the same.

A rechargeable lithium battery includes an electrode laminate including a positive electrode including a positive current collector and a positive active material layer disposed on the positive current collector; a negative electrode including a negative current collector, a negative active material layer disposed on the negative current collector, and a negative electrode functional layer disposed on the negative active material layer; and a separator, wherein the electrode laminate has a ratio (L/W) of a height (L), which is a length in a protruding direction of an electrode terminal, relative to a width (W), which is perpendicular to the protruding direction of the electrode terminal and parallel to the laminate surface, is about 1.1 to about 2.3, the positive active material layer includes a first positive active material including at least one of a composite oxide of a metal selected from cobalt, manganese, nickel, and a combination thereof and lithium and a second positive active material including a compound represented by Chemical Formula 1, the negative electrode functional layer includes flake-shaped polyethylene particles, and an operation voltage is greater than or equal to about 4.3 V.
Li.sub.aFe.sub.1-x1M.sub.x1PO.sub.4  [Chemical Formula 1] In Chemical Formula 1, 0.90≤a≤1.8, 0≤x1≤0.7, and M is Mn, Co, Ni, or a combination thereof.