A battery cell, including a first electrode plate, a second electrode plate, and a separator located between the first electrode plate and the second electrode plate. The first electrode plate and the second electrode plate include a first current collector and a second current collector respectively, the first current collector includes a first uncoated region, and the second current collector includes a second uncoated region facing the first uncoated region. In a width direction of the battery cell, the first uncoated region and the second uncoated region are both located on lateral parts of the battery cell. The battery cell and a battery including the battery cell are capable of improving abuse performance of the battery cell and avoiding energy density loss.

A method of manufacturing an electrochemical system comprising an electrode is described herein, comprising dispensing, in a configured pattern corresponding to the shape of the electrode, a model composition which comprises a substance capable of reversibly releasing an electrochemically-active agent (such as lithium) or depleted form of same, wherein dispensing comprises heating a filament comprising the model composition and dispensing a heated composition. Further described is an electrochemical system comprising an electrode which comprises a composite material, as well as batteries and supercapacitors comprising such a system. The composite material comprises a thermoplastic polymer and substance capable of reversibly releasing an electrochemically-active agent (such as lithium) or depleted form of same, wherein at least 20 weight percents of the composite material is thermoplastic polymer.

The present application provides a thin film lithium ion battery, a preparation method thereof, and a terminal, where the thin film lithium ion battery includes: a base body which is provided with a groove and/or a protrusion; a thin film lithium ion battery cell which is provided on the base body, and covers the groove and/or the protrusion; and a first external electrode and a second external electrode which are configured to connect the thin film lithium ion battery cell to an external component. The thin film lithium ion battery in the present application uses the base body structured with the groove and/or the protrusion, which may increase the area of the thin film lithium ion battery, thus increasing the capacity of the thin film lithium ion battery.

A battery is provided. A first conducting pole is disposed on a first outer layer and extends partially on a first sealing layer, and a first electrode is disposed on the first conducting pole and separate from the first sealing layer. A second conducting pole is disposed on a second outer layer and extends partially on the second sealing layer, and a second electrode is disposed on the second conducting pole and separate from the second sealing layer. An isolation membrane is attached to the first and second electrodes. One of two binding layers bound together is interposed between the first conducting pole and a part of the first outer layer protrusive beyond the second outer layer, the other of the two binding layers being interposed between the second conducting pole and a part of the first outer layer protrusive beyond the second outer layer.

An alkaline electrochemical cell has a central cathode having a corresponding cathode current collector electrically connected with a positive terminal of the electrochemical cell. The cathode current collector has a tubular shape, such as a cylindrical shape or rectangular shape, extending parallel with the length of the central cathode. The cathode current collector is embedded within the central cathode, such as at a medial point of a radius of the central cathode, thereby minimizing the distance between the cathode current collector and any portion of the central cathode, thereby increasing the mechanical strength of the cathode and facilitating charge transfer to the cathode current collector.

An alkaline electrochemical cell has a central cathode having a corresponding cathode current collector electrically connected with a positive terminal of the electrochemical cell. The cathode current collector has a tubular shape, such as a cylindrical shape or rectangular shape, extending parallel with the length of the central cathode. The cathode current collector is embedded within the central cathode, such as at a medial point of a radius of the central cathode, thereby minimizing the distance between the cathode current collector and any portion of the central cathode, thereby increasing the mechanical strength of the cathode and facilitating charge transfer to the cathode current collector.

An alkaline electrochemical cell has a central cathode having a corresponding cathode current collector electrically connected with a positive terminal of the electrochemical cell. The cathode current collector has a tubular shape, such as a cylindrical shape or rectangular shape, extending parallel with the length of the central cathode. The cathode current collector is embedded within the central cathode, such as at a medial point of a radius of the central cathode, thereby minimizing the distance between the cathode current collector and any portion of the central cathode, thereby increasing the mechanical strength of the cathode and facilitating charge transfer to the cathode current collector.

A rechargeable battery includes at least a porous base, a first electrode layer, an ionic conductor layer, and a second electrode layer. The porous base includes a conductive framework. The framework has a three-dimensional network structure. On at least part of a surface of the framework in the interior of the porous base, the first electrode layer, the ionic conductor layer, and the second electrode layer are stacked in this order. The first electrode layer and the second electrode layer have opposite polarities.

A rechargeable battery includes at least a porous base, a first electrode layer, an ionic conductor layer, and a second electrode layer. The porous base includes a conductive framework. The framework has a three-dimensional network structure. On at least part of a surface of the framework in the interior of the porous base, the first electrode layer, the ionic conductor layer, and the second electrode layer are stacked in this order. The first electrode layer and the second electrode layer have opposite polarities.

An electrochemical device including a positive electrode current collector; a first protruding portion including a plurality of positive electrodes in electrical contact with the positive electrode current collector, and a first dented portion disposed between each positive electrode of the plurality of positive electrodes; an electrolyte layer including a second protruding portion and a second dented portion respectively disposed on the first protruding portion including the plurality of positive electrodes and the first dented portion disposed between each positive electrode of the plurality of positive electrodes; and a negative electrode current collector layer including a third protruding portion and a third dented portion respectively disposed on the second protruding portion and the second dented portion of the electrolyte layer.