Provided herein are three-dimensional ion transport networks and current collectors for electrodes of electrochemical cells. Exemplary electrodes include interconnected layers and channels including an electrolyte to facilitate ion transport. Exemplary electrodes also include three dimensional current collectors, such as current collectors having electronically conducting rods, electronically conducting layers or a combination thereof.

Provided is a multilayer cable-type secondary battery including: a first electrode assembly including one or more first inner electrodes, a first separation layer surrounding outer surfaces of the first inner electrodes to prevent short circuit of electrodes and a sheet-type first outer electrode spirally wound to surround the first separation layer; a third separation layer surrounding the first electrode assembly to prevent short circuit of electrodes; and a second electrode assembly including one or more second inner electrodes surrounding an outer surface of the third separation layer, a second separation layer surrounding outer surfaces of the second inner electrodes to prevent short circuit of electrodes and a sheet-type second outer electrode spirally wound to surround the second separation layer.

Provided is a honeycomb type lithium ion battery capable of suppressing short-circuiting due to cracks. The honeycomb type lithium ion battery has an anode, a cathode, and a separator layer, wherein the anode has a plurality of through holes extending in one direction, the separator layer has partition separator layers and insulating film separator layers, the cathode has inner areas disposed inside the through holes via the partition separator layers, intermediate areas disposed over faces of the inner areas and faces of the insulating film separator layers, and a surface area with which surfaces of the insulating film separator layers and the intermediate areas are covered, and the cathode contains a binder, wherein the proportion of the content of the binder in the surface area is high compared to the proportion of the content of the binder in the inner areas.

Provided is a honeycomb type lithium ion battery capable of suppressing short-circuiting due to cracks. The honeycomb type lithium ion battery has an anode, a cathode, and a separator layer, wherein the anode has a plurality of through holes extending in one direction, the separator layer has partition separator layers and insulating film separator layers, the cathode has inner areas disposed inside the through holes via the partition separator layers, intermediate areas disposed over faces of the inner areas and faces of the insulating film separator layers, and a surface area with which surfaces of the insulating film separator layers and the intermediate areas are covered, and the cathode contains a binder, wherein the proportion of the content of the binder in the surface area is high compared to the proportion of the content of the binder in the inner areas.

A nonaqueous electrolyte secondary battery includes: a wound electrode body that is formed by laminating an elongated sheet-shaped positive electrode current collector foil, an elongated sheet-shaped negative electrode current collector foil, and an elongated sheet-shaped separator to obtain a laminate and winding the obtained laminate; a nonaqueous electrolytic solution; and a case that accommodates the wound electrode body and the nonaqueous electrolytic solution. A solid electrolyte interface film derived from an oxalato borate complex is formed on at least a surface of the negative electrode active material layer. The positive electrode current collector foil satisfies the following conditions of (a) 700%≦α≦760% and (b) 530%≦β≦590%, where α represents a 60-degree specular gloss in a direction parallel to a longitudinal direction of the positive electrode current collector foil, and β represents a 60-degree specular gloss in a width direction perpendicular to the longitudinal direction of the positive electrode current collector foil.

A nonaqueous electrolyte secondary battery includes: a wound electrode body that is formed by laminating an elongated sheet-shaped positive electrode current collector foil, an elongated sheet-shaped negative electrode current collector foil, and an elongated sheet-shaped separator to obtain a laminate and winding the obtained laminate; a nonaqueous electrolytic solution; and a case that accommodates the wound electrode body and the nonaqueous electrolytic solution. A solid electrolyte interface film derived from an oxalato borate complex is formed on at least a surface of the negative electrode active material layer. The positive electrode current collector foil satisfies the following conditions of (a) 700%≦α≦760% and (b) 530%≦β≦590%, where α represents a 60-degree specular gloss in a direction parallel to a longitudinal direction of the positive electrode current collector foil, and β represents a 60-degree specular gloss in a width direction perpendicular to the longitudinal direction of the positive electrode current collector foil.

A method for fabricating a solid state battery device. The device can include electrochemically active layers and an overlaying barrier material, with an inter-digitated layer structure configured with a post terminated lead structure. The method can include forming a plurality of battery device cell regions (1-N) formed in a multi-stacked configuration, wherein each of the battery device cell regions comprises a first current collector and a second current collector. The method can also include forming a thickness of a first and second lead material to cause formation of a first and second lead structure to interconnect each of the first and second current collectors associated with each of the plurality of battery device cell regions and to isolate each of the second current collectors extending spatially outside of the battery device cell region within a first and second isolated region, respectively.

A method for fabricating a solid state battery device. The device can include electrochemically active layers and an overlaying barrier material, with an inter-digitated layer structure configured with a post terminated lead structure. The method can include forming a plurality of battery device cell regions (1-N) formed in a multi-stacked configuration, wherein each of the battery device cell regions comprises a first current collector and a second current collector. The method can also include forming a thickness of a first and second lead material to cause formation of a first and second lead structure to interconnect each of the first and second current collectors associated with each of the plurality of battery device cell regions and to isolate each of the second current collectors extending spatially outside of the battery device cell region within a first and second isolated region, respectively.

In a storage battery, a cathode comprises a wedge-shaped or cone-shaped housing containing SiO2 nanoparticles, wherein the wide portion of the wedge or cone includes one or more expansion regions or expansion devices.

The present application relates to a secondary battery and manufacturing method thereof, a battery module and an apparatus. The secondary battery includes an electrode assembly including a main body portion and a tab extending out from the main body portion; a current collecting member including a guiding section, which extends in a direction perpendicular to a length direction of the electrode assembly; a transition connecting piece, being separately provided from the current collecting member and including a current collecting portion and a fixing portion, the current collecting portion being adapted to connect with the tab to form a first connection region, the fixing portion being adapted to connect with the guiding section to form a second connection region, and respective projections of the first connection region and the second connection region on a plane perpendicular to the length direction do not overlap.