Abstract: An all-solid-state secondary battery including: a cathode including a cathode active material layer; an anode including an anode current collector, and an anode active material layer on the anode current collector, wherein the anode active material layer includes an anode active material which is alloyable with lithium or forms a compound with lithium; and a solid electrolyte layer between the cathode and the anode, wherein a ratio of an initial charge capacity (b) of the anode active material layer to an initial charge capacity (a) of the cathode active material layer satisfies a condition of Equation 1: 0.01<(b/a)<0.5, wherein a is the initial charge capacity of the cathode active material layer determined from a first open circuit voltage to a maximum charging voltage, and b is the initial charge capacity of the anode active material layer determined from a second open circuit voltage to 0.01 volts vs. Li/Li+.

Abstract: An all-solid-state secondary battery including: a cathode including a cathode active material layer; an anode including an anode current collector, and an anode active material layer on the anode current collector, wherein the anode active material layer includes an anode active material which is alloyable with lithium or forms a compound with lithium; and a solid electrolyte layer between the cathode and the anode, wherein a ratio of an initial charge capacity (b) of the anode active material layer to an initial charge capacity (a) of the cathode active material layer satisfies a condition of Equation 1: 0.01<(b/a)<0.5, wherein a is the initial charge capacity of the cathode active material layer determined from a first open circuit voltage to a maximum charging voltage, and b is the initial charge capacity of the anode active material layer determined from a second open circuit voltage to 0.01 volts vs. Li/Li+.

Abstract: An all-solid lithium secondary battery includes: a positive active material layer; a solid electrolyte layer; and a negative active material layer, which is capable of forming an alloy or a compound with lithium, wherein the solid electrolyte layer is between the positive active material layer and the negative active material layer, and wherein the negative active material layer comprises silver (Ag).

Abstract: An all-solid-state secondary battery including: a cathode including a cathode active material layer; an anode including an anode current collector, and an anode active material layer on the anode current collector, wherein the anode active material layer includes an anode active material which is alloyable with lithium or forms a compound with lithium; and a solid electrolyte layer between the cathode and the anode, wherein a ratio of an initial charge capacity (b) of the anode active material layer to an initial charge capacity (a) of the cathode active material layer satisfies a condition of Equation 1: 0.01<(b/a)<0.5, wherein a is the initial charge capacity of the cathode active material layer determined from a first open circuit voltage to a maximum charging voltage, and b is the initial charge capacity of the anode active material layer determined from a second open circuit voltage to 0.01 volts vs. Li/Li+.

Abstract: A solid secondary battery includes: a positive electrode; a negative electrode; and a solid electrolyte disposed between the positive electrode and the negative electrode, wherein the negative electrode includes a negative electrode current collector, and a negative active material layer between the negative electrode current collector and the solid electrolyte, the negative active material layer includes a particulate carbon and a negative active material that forms an alloy or a compound with lithium, a content of the negative active material per unit area of the negative active material layer is about 0.01 milligram per square centimeter or to about 1 milligram per square centimeter, and a film strength of the negative active material layer is about 50 megapascals to about 250 megapascals.

Abstract: An all-solid-state secondary battery including: a cathode including a cathode active material layer; an anode including an anode current collector, and an anode active material layer on the anode current collector, wherein the anode active material layer includes an anode active material which is alloyable with lithium or forms a compound with lithium; and a solid electrolyte layer between the cathode and the anode, wherein a ratio of an initial charge capacity (b) of the anode active material layer to an initial charge capacity (a) of the cathode active material layer satisfies a condition of Equation 1: 0.01 <(b/a)<0.5, wherein a is the initial charge capacity of the cathode active material layer determined from a first open circuit voltage to a maximum charging voltage, and b is the initial charge capacity of the anode active material layer determined from a second open circuit voltage to 0.01 volts vs. Li/Li+.

Abstract: An all-solid lithium secondary battery, including: a cathode including a cathode active material layer; a solid electrolyte layer; and an anode including an anode active material layer, which forms an alloy or a compound with lithium, wherein the cathode, the solid electrolyte is between the cathode and the anode, wherein the anode active material layer includes about 33 weight percent to about 95 weight percent of an amorphous carbon with respect to the total mass of an anode active material in the anode active material layer, and a ratio of the initial charge capacity of the cathode active material layer to the initial charge capacity of the anode active material layer satisfies 0.01<b/a<0.5, wherein a is the initial charge capacity of the cathode active material layer, and b is the initial charge capacity of the anode active material layer.

Abstract: An all-solid-state secondary battery including: a cathode including a cathode active material layer; an anode including an anode current collector, and an anode active material layer on the anode current collector, wherein the anode active material layer includes an anode active material which is alloyable with lithium or forms a compound with lithium; and a solid electrolyte layer between the cathode and the anode, wherein a ratio of an initial charge capacity (b) of the anode active material layer to an initial charge capacity (a) of the cathode active material layer satisfies a condition of Equation 1: 0.01<(b/a)<0.5, wherein a is the initial charge capacity of the cathode active material layer determined from a first open circuit voltage to a maximum charging voltage, and b is the initial charge capacity of the anode active material layer determined from a second open circuit voltage to 0.01 volts vs. Li/Li+.

Abstract: An all-solid lithium secondary battery, including: a cathode including a cathode active material layer, a solid electrolyte layer; and an anode including an anode active material layer, which forms an alloy or a compound with lithium, wherein the cathode, the solid electrolyte is between the cathode and the anode, wherein the anode active material layer includes about 33 weight percent to about 95 weight percent of an amorphous carbon with respect to the total mass of an anode active material in the anode active material layer, and a ratio of the initial charge capacity of the cathode active material layer to the initial charge capacity of the anode active material layer satisfies 0.01<b/a<0.5, wherein a is the initial charge capacity of the cathode active material layer, and b is the initial charge capacity of the anode active material layer.

Abstract: A coated cathode active material, a method of preparing the same, and a cathode and a non-aqueous electrolyte secondary battery, each including the same, the coated cathode active material including: a cathode active material particle and a coating layer on a surface of the cathode active material particle, the coating layer including LiAlF4, LiF, and Li3AlF6.

Abstract: An all-solid secondary battery includes a cathode layer, an anode layer having an anode current collector and an anode active material layer on the anode current collector, and a solid electrolyte layer between the cathode layer and the anode layer, wherein the solid electrolyte is an oxide, phosphate, borate, sulfate, an oxynitride, or a combination thereof, and a binding strength between the anode and the solid electrolyte layer is in a range of about 14 millinewtons per millimeter to about 100 millinewtons per millimeter, and a film strength of the anode active material layer is in a range of about 16 megapascals to about 85 megapascals.

Abstract: An all-solid-state secondary battery including: a positive electrode active material layer including a positive electrode active material and a sacrificial positive electrode material having an oxidation-reduction potential which is less than a discharge voltage of the positive electrode active material; and a negative electrode active material layer including a negative electrode active material including an element alloyable with lithium or that forms a compound with lithium; and a solid electrolyte layer between the positive electrode active material layer and the negative electrode active material layer, wherein the sacrificial positive electrode material includes a sacrificial active material and a conductive agent.

Abstract: A solid electrolyte material is represented by Formula 1 (Li3?xM1x)aYbM2c??Formula 1 wherein, in Formula 1, M1 includes at least one of Na, K, Rb, Cs, or Fr, M2 includes at least one of F, Cl, Br, or I, 0<x<3, 0.9?a?1.1, 0.9?b?1.1, and 5?c?7.

Abstract: An all-solid-state secondary battery including: a cathode including a cathode active material layer; an anode including an anode current collector, and an anode active material layer on the anode current collector, wherein the anode active material layer includes an anode active material which is alloyable with lithium or forms a compound with lithium; and a solid electrolyte layer between the cathode and the anode, wherein a ratio of an initial charge capacity (b) of the anode active material layer to an initial charge capacity (a) of the cathode active material layer satisfies a condition of Equation 1: 0.01<(b/a)<0.5, wherein a is the initial charge capacity of the cathode active material layer determined from a first open circuit voltage to a maximum charging voltage, and b is the initial charge capacity of the anode active material layer determined from a second open circuit voltage to 0.01 volts vs. Li/Li+.

Abstract: An all-solid-state secondary battery including: a cathode including a cathode active material layer; an anode including an anode current collector, and an anode active material layer on the anode current collector, wherein the anode active material layer includes an anode active material which is alloyable with lithium or forms a compound with lithium; and a solid electrolyte layer between the cathode and the anode, wherein a ratio of an initial charge capacity (b) of the anode active material layer to an initial charge capacity (a) of the cathode active material layer satisfies a condition of Equation 1: 0.01<(b/a)<0.5, wherein a is the initial charge capacity of the cathode active material layer determined from a first open circuit voltage to a maximum charging voltage, and b is the initial charge capacity of the anode active material layer determined from a second open circuit voltage to 0.01 volts vs. Li/Li+.

Abstract: An all-solid lithium secondary battery includes: a positive active material layer; a solid electrolyte layer; and a negative active material layer, which is capable of forming an alloy or a compound with lithium, wherein the solid electrolyte layer is between the positive active material layer and the negative active material layer, and wherein the negative active material layer comprises silver (Ag).

Abstract: An all-solid lithium secondary battery, including: a cathode including a cathode active material layer, a solid electrolyte layer; and an anode including an anode active material layer, which forms an alloy or a compound with lithium, wherein the cathode, the solid electrolyte is between the cathode and the anode, wherein the anode active material layer includes about 33 weight percent to about 95 weight percent of an amorphous carbon with respect to the total mass of an anode active material in the anode active material layer, and a ratio of the initial charge capacity of the cathode active material layer to the initial charge capacity of the anode active material layer satisfies 0.01<b/a<0.5, wherein a is the initial charge capacity of the cathode active material layer, and b is the initial charge capacity of the anode active material layer.

Abstract: An all-solid-state secondary battery including: a positive electrode active material layer including a positive electrode active material and a sacrificial positive electrode material having an oxidation-reduction potential which is less than a discharge voltage of the positive electrode active material; and a negative electrode active material layer including a negative electrode active material including an element alloyable with lithium or that forms a compound with lithium; and a solid electrolyte layer between the positive electrode active material layer and the negative electrode active material layer, wherein the sacrificial positive electrode material includes a sacrificial active material and a conductive agent.

Abstract: An all-solid-state secondary battery including: a cathode including a cathode active material layer; an anode including an anode current collector, and an anode active material layer on the anode current collector, wherein the anode active material layer includes an anode active material which is alloyable with lithium or forms a compound with lithium; and a solid electrolyte layer between the cathode and the anode, wherein a ratio of an initial charge capacity (b) of the anode active material layer to an initial charge capacity (a) of the cathode active material layer satisfies a condition of Equation 1: 0.01<(b/a)<0.5, wherein a is the initial charge capacity of the cathode active material layer determined from a first open circuit voltage to a maximum charging voltage, and b is the initial charge capacity of the anode active material layer determined from a second open circuit voltage to 0.01 volts vs. Li/Li+.

Abstract: An apparatus (10) for producing an SiC single crystal is used in the solution growth includes a seed shaft (28) and a crucible (14). The seed shaft (28) has a lower end surface (28S) to which an SiC seed crystal (32) is to be attached. The crucible (14) holds an Si—C solution (15). The seed shaft (28) includes a cylinder part (28A), a bottom part (28B), and a low heat conductive member (28C). The bottom part (28B) is located at the lower end of the cylinder part (28A) and has the lower end surface (28S). The low heat conductive member (28C) is arranged on the upper surface of the bottom part (28B) and has a thermal conductivity lower than that of the bottom part (28B). This production apparatus can make the temperature within the crystal growth surface of the SiC seed crystal less liable to vary.