Provided are an electrode sheet for an all-solid state secondary battery and an all-solid state secondary battery including the electrode sheet. The electrode sheet includes a current collector, a primer layer, and an electrode active material layer in this order, in which the electrode active material layer includes an inorganic solid electrolyte having ion conductivity of a metal belonging to Group 1 or Group 2 in the periodic table, an active material, and a binder a1, the primer layer includes the binder a1 and a binder a2, and in a case where the primer layer is equally divided into six sub-layers in a thickness direction and the six sub-layers are set as a first sub-layer to a sixth sub-layer in order from the electrode active material layer side toward the current collector side, a relationship between a ratio B1 of a content of a1 to a total content of a1 and a2 in the first sub-layer and a ratio B6 of a content of a1 to a total content of a1 and a2 in the sixth sub-layer satisfies B1>B6.

The present invention provides a conductive fabric comprising base cloth and a conductive metallic circuit structure formed on the surface of the base cloth. The conductive metallic circuit structure comprises at least one metallic seed layer and at least one chemical-plating layer. The metallic seed layer is an evaporation-deposition layer or a sputter-deposition layer and has a circuit pattern. The chemical-plating layer is applied over the surface of the metallic seed layer. The conductive fabric has improved conductivity and heat generation efficiency.

[Problem] Upon application or film formation of a particulate matter to/on an object, the particulate matter moving with a speed is heated in a time duration from a suction port for particulate matter to the object, thereby softening or melting at least some of the particulate matter when the particulate matter is applied to the object.

[Solution] A particulate matter is heated by means of induction heating or laser in a time duration from a suction port for particulate matter to an object, so that at least some of the particulate matter is softened or melted at a relatively low temperature on the object in synergy with the collision energy of the particulate matter with the object, thereby enabling the application or film formation of the particulate matter.

[Problem] Upon application or film formation of a particulate matter to/on an object, the particulate matter moving with a speed is heated in a time duration from a suction port for particulate matter to the object, thereby softening or melting at least some of the particulate matter when the particulate matter is applied to the object.

[Solution] A particulate matter is heated by means of induction heating or laser in a time duration from a suction port for particulate matter to an object, so that at least some of the particulate matter is softened or melted at a relatively low temperature on the object in synergy with the collision energy of the particulate matter with the object, thereby enabling the application or film formation of the particulate matter.

An electrode assembly includes a first electrode plate. The first electrode plate includes a first current collector, a first active material layer and a first insulation layer. The first current collector includes a first surface and a second surface. The first surface and the second surface are provided opposite to each other. The first active material layer is provided on the first surface. The first insulation layer is located between the first current collector and the first active material layer.

The present application provides a current collecting plate and a cylindrical lithium battery. The current collecting plate includes a circular current collecting plate, a center of the circular current collecting plate is provided with a central area, an edge of the circular current collecting plate is provided with at least one notch, and circumferences of concentric circles outside the central area of the circular current collecting plate are respectively provided with a liquid guiding hole, and each liquid guiding hole and the notch are configured for guiding liquid for to a battery electrode group at a bottom of the circular current collecting plate.

Provided are a current collector, an electrode plate, a battery and an application of the current collector. The current collector includes an insulation layer and a conductive layer. The insulation layer is configured to bear the conductive layer, the conductive layer is configured to bear an electrode active material layer. A room temperature film resistance R.sub.S of the conductive layer meets a conditional expression: 0.016Ω/□≤R.sub.S≤420Ω/□. By the current collector of the present application, the short circuit resistance of the battery in case of an abnormal situation causing the short circuit can be greatly increased, and the short circuit current can be greatly reduced. Thus, influence of the short circuit damage on the battery is limited to a point range, and an interrupt in the current only occurs in a point range, without disrupting normal operation of the battery in a certain period time.

A lithium ion secondary battery includes a positive electrode, a negative electrode, and an electrolyte. The negative electrode has a negative electrode current collector and a negative electrode active material layer provided on the negative electrode current collector. The negative electrode current collector satisfies:
(D2/D1)≥0.968  (1),
D2≥21.947*(X/100)−24.643  (2),
110≤X≤125  (3), and
where D1 is a first displacement amount in a first piercing test at a first piercing speed of 0.1 mm/min or more; D2 is a second displacement amount in a second piercing test at a second piercing speed of less than 0.1 mm/min; and X is an expansion coefficient (%) of the negative electrode active material layer.

A lithium ion secondary battery includes a positive electrode, a negative electrode, and an electrolyte. The negative electrode has a negative electrode current collector and a negative electrode active material layer provided on the negative electrode current collector. The negative electrode current collector satisfies:
(D2/D1)≥0.968  (1),
D2≥21.947*(X/100)−24.643  (2),
110≤X≤125  (3), and
where D1 is a first displacement amount in a first piercing test at a first piercing speed of 0.1 mm/min or more; D2 is a second displacement amount in a second piercing test at a second piercing speed of less than 0.1 mm/min; and X is an expansion coefficient (%) of the negative electrode active material layer.

An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the content X of the nitrile compound and the content Y of the trinitrile compound meet the conditions represented by Formula (1) and Formula (2): {about 2 wt %≤(X+Y)≤about 11 wt % . . . (1), about 0.1≤(X/Y)≤about 8 . . . (2)}. The electrolyte further includes at least one selected from the group consisting of a cyclic carbonate ester having a carbon-carbon double bond, a fluorinated chain carbonate ester, a fluorinated cyclic carbonate ester, and a compound having a sulfur-oxygen double bond. The electrolyte is capable of effectively inhibiting the increase in DC internal resistance of an electrochemical device so that the electrochemical device has excellent cycle and storage performance.