Abstract: Battery stacks are disclosed. In examples, the battery stack comprises a plurality of electrochemical cells. Each electrochemical cell of the plurality comprises a cathode layer, an electrolyte layer arranged on the cathode layer, and an anode layer arranged on the electrolyte layer. The battery stack comprises a cathode current collector comprising at least a first portion and a second portion, the first portion arranged on the cathode layer of a first electrochemical cell of the plurality of electrochemical cells, the second portion arranged on the cathode layer of a second electrochemical cell of the plurality of electrochemical cells. Between the first portion and second portion of the cathode current collector, the cathode current collector comprises an intermediate portion, at least one surface of which coated with an electrically-insulating coating.

Abstract: Solid-state electrochemical cells are disclosed. In examples, the cell comprises a cathode current collector, a sintered cathode layer arranged on the cathode current collector, a sintered electrolyte layer arranged on the sintered cathode layer, a sintered anode layer arranged on the sintered electrolyte layer, and an anode current collector arranged on the anode layer. Also described herein are methods of manufacturing said solid-state electrochemical cells, battery stacks comprising a plurality of said solid-state electrochemical cells, and electrically-powered devices comprising the solid-state electrochemical cell or battery stack.

Abstract: Solid-state electrochemical cells are disclosed. In examples, the cell comprises a sintered cathode layer, an electrolyte layer, an anode layer arranged on at least part of the electrolyte layer, an anode current collector, and a cathode current collector. The sintered cathode layer comprises side surfaces having portions which extend in planes oblique to the plane in which the top and/or bottom surfaces of the sintered cathode layer extend. The electrolyte layer is arranged on at least one of these portions; the cathode current collector is arranged on at least another of these portions.

Abstract: A composite cathode material includes a gel polymer electrolyte and particles of a cathode material. The particles of the cathode material are arranged in the gel polymer electrolyte.

Abstract: Described herein is a laminate electrochemical cell including a cathode layer, an anode layer, a polymer electrolyte layer, and a ceramic layer. The polymer electrode layer is arranged between the cathode layer and the anode layer and coats at least a portion of the anode layer. The ceramic layer is arranged between the polymer electrolyte layer and the cathode layer. The ceramic layer and the polymer electrolyte layer have different compositions. Also described herein are methods of manufacturing the laminate electrochemical cell, battery stacks including a plurality of said laminate electrochemical cells, and electrically-powered devices including the electrochemical cell or battery stack.