An electrochemical cell includes a. a cathode capable of reversibly accommodating lithium ions; b. an anode containing metallic lithium as active material; and c. a separator arranged between the cathode and the anode, wherein d. the anode includes a porous, electrically conductive matrix having an open-pored structure; and e. the metallic lithium of the anode is incorporated in pores of the matrix.

Batteries and battery cells are described including batteries and battery cells having solid-state components such as porous and/or dense solid state components. Aspects of dimensions, porosity and pore structure are also described.

Batteries and battery cells are described including batteries and battery cells having solid-state components such as porous and/or dense solid state components. Aspects of dimensions, porosity and pore structure are also described.

Aspects of the disclosure include an electrode coating having a spatially varied porosity and a method of forming the same by using a porous current collector. An exemplary method can include forming a porous current collector having a bulk material and a plurality of voids. The porous current collector can be coated, infused, or otherwise saturated with an electrode coating having an active electrode material. The porous current collector and the electrode coating can be compressed in a calendering process to define the electrode film. The distribution of the plurality of voids in the porous current collector provides for regions of different calendering pressures during the calendering process. The regions of different calendering pressures leads to regions of higher and lower porosity in the resultant electrode film. In other words, an electrode film having a spatially varied porosity.

A flat-plate type sodium metal battery and an electrochemical device are described. The battery comprises a positive electrode plate and a negative electrode plate, the positive electrode plate provided with a first micro-through-hole arranged in an array on at least part of the surface thereof, the negative electrode plate provided with a second micro-through-hole arranged in an array on at least part of the surface thereof, wherein the first micro-through-hole and the second micro-through-hole have an overlapping area of ≥5% of the total area of the second micro-through-hole of the negative electrode plate. Disposing a first micro-through-hole on the positive electrode plate, and a second micro-through-hole on the negative electrode plate, and setting the aperture size and aperture spacing of micro-through-holes are beneficial to increasing infiltration and penetration of the electrolyte in the positive electrode plate and are conducive to rapid infiltration to large-sized electrode plates.

A flat-plate type sodium metal battery and an electrochemical device are described. The battery comprises a positive electrode plate and a negative electrode plate, the positive electrode plate provided with a first micro-through-hole arranged in an array on at least part of the surface thereof, the negative electrode plate provided with a second micro-through-hole arranged in an array on at least part of the surface thereof, wherein the first micro-through-hole and the second micro-through-hole have an overlapping area of ≥5% of the total area of the second micro-through-hole of the negative electrode plate. Disposing a first micro-through-hole on the positive electrode plate, and a second micro-through-hole on the negative electrode plate, and setting the aperture size and aperture spacing of micro-through-holes are beneficial to increasing infiltration and penetration of the electrolyte in the positive electrode plate and are conducive to rapid infiltration to large-sized electrode plates.

A battery includes: a power generating element that includes at least one solid-state battery cell that includes a positive electrode, a solid electrolyte layer, and a negative electrode which are laminated; a first pressurizing member in contact with a first principal surface of the power generating element; a second pressurizing member in contact with a second principal surface of the power generating element, the second principal surface being opposite to the first principal surface. The first pressurizing member includes a first void. The second pressurizing member includes a second void. The insulating member includes a side surface portion that covers a side surface of the power generating element, and an extending portion that extends from the side surface portion into each of the first void and the second void.

An electrode, a battery laminate, a battery and methods of providing the electrode, laminate or battery, where the electrode has an electrode layer and a current collector both having through-going bores of a size allowing liquid transport through the current collector and the electrode layer. The bores are provided by providing elongate slits or weakened portions and deforming the electrode. The current collector also has channels therein allowing liquid to travel along a plane of the current collector. In this manner, the drying of and introduction of electrolyte therein is made much faster.

An electrode, a battery laminate, a battery and methods of providing the electrode, laminate or battery, where the electrode has an electrode layer and a current collector both having through-going bores of a size allowing liquid transport through the current collector and the electrode layer. The bores are provided by providing elongate slits or weakened portions and deforming the electrode. The current collector also has channels therein allowing liquid to travel along a plane of the current collector. In this manner, the drying of and introduction of electrolyte therein is made much faster.

A battery system comprising: an anode composed of a non-toxic biocompatible metal; a first printable carbon-based current collector comprising biocompatible multiple few layer graphene (FLG) sheets in electrical contact with and extending from the anode; a three-dimensional (3D) hierarchical mesoporous carbon-based cathode including an open porous structure configured to catalyze an active material via gas diffusion; a polymer-based barrier film deposited on the 3D hierarchical mesoporous carbon-based cathode, the polymer-based barrier film configured to prevent oxygen from entering the open porous structure while deposited on the 3D hierarchical mesoporous carbon-based cathode; a second printable carbon-based current collector comprising biocompatible multiple few layer graphene (FLG) sheets in electrical contact with and extending from the cathode; and an electrolyte layer disposed between the anode and the cathode, the electrolyte layer configured to activate the battery system when released into one or both of the anode and the cathode.