Abstract: An anode for a lithium secondary battery according to embodiments of the present disclosure includes: an anode current collector; and an anode active material layer disposed on at least one surface of the anode current collector, wherein the anode active material layer includes a first anode active material layer and a second anode active material layer disposed on the first anode active material layer, and the diffusivity (D) of the entire anode active material layer obtained through X-ray microscopy (XRM) analysis is 4.6% to 5.8%.

Abstract: A cathode for a lithium secondary battery includes a cathode current collector, and a cathode mixture layer on at least one surface of the cathode current collector. The cathode mixture layer includes a first cathode mixture layer on the cathode current collector, and a second cathode mixture layer on the first cathode mixture layer, the first cathode mixture layer includes a lithium transition metal oxide particle in a form of a single particle containing nickel (Ni), and the second cathode mixture layer includes lithium metal phosphate particles.

Abstract: An anode active material for a secondary battery includes a carbon-based active material, and silicon-based active material particles doped with magnesium. At least some of the silicon-based active material particles include pores, and a volume ratio of pores having a diameter of 50 nm or less among the pores is 2% or less based on a total volume of the silicon-based active material particles.

Abstract: An anode for a lithium secondary battery includes an anode current collector, and an anode active material layer formed on at least one surface of the anode current collector. The anode active material layer includes a carbon-based active material, a first silicon-based active material including a carbon-silicon composite active material, and a second silicon-based active material including a silicon oxide (SiOx, 0<x<2). A content of the first silicon-based active material is in a range from 2 wt % to 40 wt % based on a total weight of the anode active material layer.

Abstract: Provided is an anode for a lithium secondary battery of the present disclosure, comprising: an anode current collector; a first anode mixture layer formed on at least one surface of the anode current collector and including a first silicon-based active material doped with a first metal and a first conductive material; and a second anode mixture layer formed on the first anode mixture layer and including a second silicon-based active material doped with a second metal and a second conductive material, and the first conductive material has a Raman R value according to the following formula 1 that is greater than that of the second conductive material. Raman R=ID/IG??[Formula 1] (In formula 1, ID is a Raman peak intensity value in an absorption region of 1330 to 1380 cm?1, and IG is a Raman peak intensity value in an absorption region of 1550 to 1625 cm?1.

Abstract: A display device is provided including a substrate. A second semiconductor layer is disposed on the substrate. The second semiconductor layer includes Si. A second gate lower electrode overlaps a channel region of the second semiconductor layer. A second gate insulating layer is disposed on the second gate lower electrode. A second gate upper electrode and a light blocking layer are disposed on the second gate insulating layer. A first auxiliary layer is disposed on the second gate upper electrode and the light blocking layer. A first semiconductor layer overlaps the light blocking layer. The first semiconductor layer includes an oxide semiconductor. A first gate electrode overlaps a channel region of the first semiconductor layer. The first auxiliary layer includes an insulating layer including at least one compound selected from SiNx, SiOx, and SiON, and at least one material selected from F, Cl, and C.

Abstract: Provided are a negative electrode for a lithium secondary battery and a lithium secondary battery including the same, the negative electrode for a lithium secondary battery including a current collector; a first negative electrode active material layer disposed on the current collector and including a first graphite-based active material containing artificial graphite and natural graphite, and a first silicon-based active material; and a second negative electrode active material layer disposed on the first negative electrode active material layer and including a second graphite-based active material containing artificial graphite and natural graphite, and a second silicon-based active material. The first graphite-based active material has a content of the artificial graphite equal to or less than that of the natural graphite, and the second graphite-based active material has a content of the artificial graphite greater than that of the natural graphite.

Abstract: An anode for a lithium secondary battery includes an anode current collector, and an anode active material layer formed on at least one surface of the anode current collector. The anode active material layer includes a carbon-based active material, a first silicon-based active material including a carbon-silicon composite active material, and a second silicon-based active material including a silicon oxide (SiOx, 0<x<2). A content of the first silicon-based active material is in a range from 2 wt % to 40 wt % based on a total weight of the anode active material layer.

Abstract: A lithium secondary battery according to an embodiment includes an electrode assembly 1 in which a first electrode group 2 including at least one first unit cell 10; and a second electrode group 4 including at least one second unit cell 30 are alternately assembled. The first unit cell 10 includes a first-first anode mixture layer 111a on the first anode current collector 110; and a first-second anode mixture layer 111b on the first-first anode mixture layer. The second unit cell 30 includes a second-first anode mixture layer 311a on the second anode current collector 310; and a second-second anode mixture layer 311b on the second-first anode mixture layer. The first-first anode mixture layer 111a includes a carbon-based active material, and each of the first-second anode mixture layer 111b, the second-first anode mixture layer 311a and the second-second anode mixture layer 311b includes a silicon-based active material.

Abstract: The purpose of the present disclosure is to provide a method for recovering lithium carbonate from cathode material of wasted lithium-ion battery where an environment friendly process is applied to improve the leaching rate of lithium. In order to achieve the purpose, the method includes steps of: (a) forming a pulp by adding a lithium iron phosphate (LiFePO4) cathode active material of the wasted lithium-ion battery to water; (b) introducing a reducing agent solution and carbon dioxide gas into the pulp to perform aqueous leaching, and then separating a solid-phase material from a liquid phase containing lithium carbonate (Li2CO3); and (c) obtaining the lithium carbonate by crystallizing a solution obtained from the liquid phase containing the lithium carbonate.

Abstract: Disclosed is an anode including an anode current collector, and an anode active material layer which is disposed on at least one surface of the anode current collector and has a multilayer structure comprising a first anode active material layer and a second anode active material layer. At least one of the first anode active material layer and the second anode active material layer includes a first metal-doped first silicon-based active material, and a doping amount of the first metal is 1.5% by weight to 8% by weight based on a total weight of the first silicon-based active material.

Abstract: Provided are a negative electrode for a lithium secondary battery and a lithium secondary battery including the same, the negative electrode for a lithium secondary battery including a current collector; a first negative electrode active material layer disposed on the current collector and including a first graphite-based active material containing artificial graphite and natural graphite, and a first silicon-based active material; and a second negative electrode active material layer disposed on the first negative electrode active material layer and including a second graphite-based active material containing artificial graphite and natural graphite, and a second silicon-based active material. The first graphite-based active material has a content of the artificial graphite equal to or less than that of the natural graphite, and the second graphite-based active material has a content of the artificial graphite greater than that of the natural graphite.

Abstract: An anode for a secondary battery according to exemplary embodiments of the present disclosure includes: an anode current collector; a first anode active material layer which is disposed on at least one surface of the anode current collector and includes natural graphite and artificial graphite; and a second anode active material layer which is disposed on the first anode active material layer and includes a silicon-based active material, a graphite-based active material and carbon nanotubes. Accordingly, a lithium secondary battery having improved rapid charge/discharge cycle lifespan characteristics may be implemented.

Abstract: A display device comprises a first barrier layer disposed on a substrate, a first conductive layer disposed on the first barrier layer and including a first light blocking layer and a first capacitor electrode, a protective layer disposed on the first conductive layer and including a first additive, a second barrier layer disposed on the protective layer, a second conductive layer disposed on the second barrier layer, a buffer layer disposed on the second conductive layer, an active layer disposed on the buffer layer and including an oxide semiconductor, a gate insulating layer disposed on the active layer, and a third conductive layer disposed on the gate insulating layer and connected to the first capacitor electrode, wherein the first conductive layer includes a first metal layer, a second metal layer disposed on the first metal layer, and a third metal layer disposed on the second metal layer.

Abstract: A display device according to an embodiment includes a substrate, a first bottom electrode disposed on the substrate, a first passivation layer disposed on the first bottom electrode, and containing at least one of silicon nitride, silicon oxide, and silicon oxynitride, and a first additive, a first insulating layer disposed on the first passivation layer, an active layer disposed on the first insulating layer, and containing an oxide semiconductor, a gate insulating layer disposed on the active layer, a gate electrode disposed on the gate insulating layer, and a second insulating layer disposed on the gate electrode. The first bottom electrode includes a first metal layer and a second metal layer disposed on the first metal layer and exposing a side surface of the first metal layer, and the first passivation layer covers the exposed side surface of the first metal layer.

Abstract: An anode for a lithium secondary battery includes an anode current collector, and an anode active material layer formed on at least one surface of the anode current collector. The anode active material layer includes a carbon-based active material, a first silicon-based active material doped with magnesium and a second silicon-based active material not doped with magnesium. A content of the first silicon-based active material is in a range from 2 wt % to 20 wt % based on a total weight of the anode active material layer.

Abstract: A secondary battery includes a first cathode group in which first cathodes are stacked adjacent to each other, a second cathode group in which second cathodes are stacked adjacent to each other, and anodes facing the first cathode or the second cathode. Each of the first cathodes includes a first cathode current collector and a first cathode active material layer on the first cathode current collector. Each of the second cathodes includes a second cathode current collector and a second cathode active material layer on the second cathode current collector. The second cathode active material layer has a different active material composition or a different stacked structure from that of the first cathode active material layer.

Abstract: An anode for a secondary battery is provided, the anode for a secondary battery including: an anode current collector; a first anode mixture layer formed on at least one surface of the anode current collector, and including a first silicon-based active material and a first conductive material; and a second anode mixture layer formed on the first anode mixture layer, and including a second silicon-based active material and a second conductive material, wherein a content of the first silicon-based active material in the first anode mixture layer is lower than a content of the second silicon-based active material in the second anode mixture layer, and a Radial Breathing Mode (RBM) peak is observed in a Raman spectrum obtained from a surface of the second anode mixture layer.

Abstract: Embodiments of the present disclosure relate to a secondary battery assembly including a plurality of battery cells, a case forming an accommodating space for accommodating the plurality of battery cells, and a non-combustible gas accommodated in the accommodating space together with the plurality of battery cells to mitigate or delay the thermal propagation.

Abstract: A display device includes: a substrate; and a semiconductor layer disposed on the substrate, and including a first area, a second area, and a third area that are sequentially positioned by dividing the semiconductor layer into three areas in a thickness direction of the semiconductor layer, wherein the semiconductor layer includes polycrystalline silicon, a concentration of fluorine contained in the semiconductor layer has a first peak value in the first area and a second peak value in the third area, and the first peak value of the concentration of the fluorine in the semiconductor layer is about 30% or less of the second peak value of the concentration of the fluorine in the semiconductor layer.