Energy storage devices, battery cells, and batteries of the present technology may include a first current collector, and may include a second current collector. At least one of the first current collector and the second current collector may be a metal current collector. The battery cells may include a seal between an external region of the first current collector and an external region of the second current collector. The seal may be coupled with a first portion of a first surface of the first current collector, and may be coupled with a first portion of a first surface of the second current collector. The battery cells may also include a coupling material positioned between the seal and the first portion of the first surface of the first current collector. The coupling material may also be positioned between the seal and the first portion of the first surface of the second current collector.

An energy storage device has all components, e.g. anode, electrolyte, and cathode contained and sealed with a trench in a substrate. Various methods and structures are disclosed for sealing the components. In some embodiments, a sealer or sealing layer seals the components. One embodiment uses a tension clamp to contain the components with additional pressure. Another embodiment uses a cathode structure cup which is held in place in the substrate via sidewall trench features. Different external connections to the device are disclosed. The invention enables full three-dimensional components to be created and contained entirely within the substrate during assembly, curing, galvanic cycling and other manufacturing processes and provides improved sealing of the components during device operation.

An energy storage device has all components, e.g. anode, electrolyte, and cathode contained and sealed with a trench in a substrate. Various methods and structures are disclosed for sealing the components. In some embodiments, a sealer or sealing layer seals the components. One embodiment uses a tension clamp to contain the components with additional pressure. Another embodiment uses a cathode structure cup which is held in place in the substrate via sidewall trench features. Different external connections to the device are disclosed. The invention enables full three-dimensional components to be created and contained entirely within the substrate during assembly, curing, galvanic cycling and other manufacturing processes and provides improved sealing of the components during device operation.

The present invention relates to a composite separation membrane for a lithium secondary battery, having an excellent effect of improving the life time and safety of a battery and a lithium secondary battery including the membrane. The composite separation membrane includes a porous base layer; a heat-resistant layer formed on one side or both sides of the porous base layer; and a fusion layer formed on an outermost layer. The heat-resistant layer includes inorganic particles connected and fixed by binder polymers, and the fusion layer includes crystalline polymers in the form of particles having a melting temperature of 100° C. or higher.

The present invention relates to a composite separation membrane for a lithium secondary battery, having an excellent effect of improving the life time and safety of a battery and a lithium secondary battery including the membrane. The composite separation membrane includes a porous base layer; a heat-resistant layer formed on one side or both sides of the porous base layer; and a fusion layer formed on an outermost layer. The heat-resistant layer includes inorganic particles connected and fixed by binder polymers, and the fusion layer includes crystalline polymers in the form of particles having a melting temperature of 100° C. or higher.

The present invention provides a lithium-ion battery, including: a housing and a separator located inside the housing, where the separator separates internal space of the housing into a plurality of accommodation cavities, battery core sets are disposed inside the accommodation cavities, the battery core sets each include at least one pole shank, and the battery core sets are connected in series; and at least one separator is provided with a liquid injection hole, and the liquid injection hole is used to connect two adjacent accommodation cavities on two sides of the separator; and a block mechanism, where the block mechanism is located inside the housing, the block mechanism enables the liquid injection hole to be in a predetermined state, and the predetermined state includes an open state and a closed state. The battery provided in the present invention ensures isolation and safety of each battery core set while facilitating liquid injection.

An electrolyte precursor solution includes a metallic compound containing elements constituting an electrolyte, a solvent capable of dissolving the metallic compound, and an anionic surfactant having a sulfate group (SO.sub.4.sup.2−) bonded to a hydrophobic group R. By reacting such an electrolyte precursor solution with active material particles containing lithium, lithium sulfate derived from the anionic surfactant is interposed at the interface between the surface of the active material particle and the electrolyte so as to enhance the dissociation of lithium ions at the interface, and thus, an excellent ion conductivity can be realized.

An electrolyte precursor solution includes a metallic compound containing elements constituting an electrolyte, a solvent capable of dissolving the metallic compound, and an anionic surfactant having a sulfate group (SO.sub.4.sup.2−) bonded to a hydrophobic group R. By reacting such an electrolyte precursor solution with active material particles containing lithium, lithium sulfate derived from the anionic surfactant is interposed at the interface between the surface of the active material particle and the electrolyte so as to enhance the dissociation of lithium ions at the interface, and thus, an excellent ion conductivity can be realized.

A battery is provided. The battery includes a pressurized gas circulating system and a reaction chamber. The reaction chamber includes a housing and a metal core disposed within the housing. The pressurized gas circulating system at least includes a high pressure storage tank. A delivery line fluidly connects the high pressure storage tank to the housing. An exhaust line fluidly connects the housing to the pressurized gas circulating system. The battery further includes a cathode terminal and an anode terminal.

A battery is provided. The battery includes a pressurized gas circulating system and a reaction chamber. The reaction chamber includes a housing and a metal core disposed within the housing. The pressurized gas circulating system at least includes a high pressure storage tank. A delivery line fluidly connects the high pressure storage tank to the housing. An exhaust line fluidly connects the housing to the pressurized gas circulating system. The battery further includes a cathode terminal and an anode terminal.