Abstract: A system including a lithium-ion battery cell is disclosed. The lithium-ion battery cell includes a first electrode. The first electrode includes a current collector including a surface and an electrode coating formed from an electrode coating slurry and disposed on the current collector. The electrode coating slurry includes a plurality of flakes of flake graphite. Each of the plurality of flakes includes two parallel planar surfaces and an edge plane defined by the two parallel planar surfaces. The edge planes of the plurality of flakes are statistically facing toward the surface of the current collector. The first electrode further includes a conductive material including a high aspect ratio nano-sized carbon material. The carbon material is configured for providing attractive forces between components of the electrode coating. The lithium-ion battery cell further includes a second electrode, a separator disposed between the first electrode and the second electrode, and an electrolyte.

Abstract: An electrochemical battery cell includes a plurality of first electrodes, a plurality of second electrodes, a plurality of layers interleaved between and stacked in an electrode stack along a central stack axis with the first and second electrodes, a first current collector, and a second current collector. The second current collector includes an elongated cylinder and a fluidic coupler, the second current collector extends axially through the central stack cavity, and the second current collector includes a flow channel extending longitudinally between a first end and a second end.

Abstract: Presented are electrochemical devices with in-stack pressure sensors, methods for making/using such devices, and battery cells with electrode stacks having an electrode separator assembly with a piezoelectric layer for in-stack pressure sensing and dendrite cleaning. An electric machine, such as a lithium-class secondary battery cell for example, includes a device housing with an ion-conducting electrolyte located inside the device housing. A stack of working electrodes is also located inside the device housing, in electrochemical contact with the electrolyte. At least one electrode separator assembly is located inside the device housing, interposed between a neighboring pair of the working electrodes. The electrode separator assembly includes a pair of separator layers that transmit therethrough the ions of the electrolyte, and a piezoelectric layer that is interposed between the two separator layers.

Abstract: Presented are stacked electrode designs for electrochemical devices, methods for making/using such electrochemical devices, and lithium-class cylindrical and prismatic battery cells with stacked electrode architectures. An electrochemical device employs multiple first (e.g., anode) electrodes and multiple second (e.g., cathode) electrodes, each of which includes an active (anode/cathode) electrode material borne by an electrode body and a flexible tab projecting from the electrode body. Multiple electrically insulating separators are interleaved between and stacked along a central stack axis with the electrodes to define an electrode stack. A first electrically conductive current collector fully or partially surrounds the electrode stack and interference fits with the electrode tabs of the first electrodes to electrically connect thereto.