A battery including a housing assembly, an electrode assembly, and a conductive assembly. The housing assembly includes a first housing fixed on a second housing. The second housing is provided with a cavity and includes a bottom plate. The electrode assembly is disposed in the cavity. The bottom plate contains an elastic portion protruding toward the first housing. The electrode assembly includes a first electrode plate and a second electrode plate stacked together. A surface of the first electrode plate facing back from a center of the electrode assembly contains a first blank foil region uncoated with a first active material and electrically connected to the conductive assembly. A surface of the second electrode plate facing back from the center of the electrode assembly contains a second blank foil region uncoated with a second active material. The elastic portion is electrically connected to the second blank foil region.

A battery including a housing assembly, an electrode assembly, and a conductive assembly. The housing assembly includes a first housing fixed on a second housing. The second housing is provided with a cavity and includes a bottom plate. The electrode assembly is disposed in the cavity. The bottom plate contains an elastic portion protruding toward the first housing. The electrode assembly includes a first electrode plate and a second electrode plate stacked together. A surface of the first electrode plate facing back from a center of the electrode assembly contains a first blank foil region uncoated with a first active material and electrically connected to the conductive assembly. A surface of the second electrode plate facing back from the center of the electrode assembly contains a second blank foil region uncoated with a second active material. The elastic portion is electrically connected to the second blank foil region.

The present disclosure relates to a method of making carbon nanotube supported self-standing electrodes embedded in a polymer based battery packaging material. The present disclosure further relates to a method of continuously making carbon nanotube supported self-standing electrodes embedded in a polymer based battery packaging material. The resulting self-standing electrodes may be used in a wearable and flexible battery.

The disclosure provides a flexible and rechargeable battery unit that is configured to a free-form shape, and/or configured to include uneven thickness, thereby providing multi-axial coverage and/or enhanced bendability and storage capacity. The battery unit and method for fabricating the battery unit includes cathode and anode substrates configured in a free-form shape, a separator layer made from a nanofiber material for enclosing either the cathode substrate or the anode substrate to form an enclosed cathode substrate or enclose anode substrate, with the enclosed cathode substrate being overlapped with the anode substrate, or the enclosed anode substrate being overlapped with the cathode substrate to form a stacked battery structure, which can be further configured to form a notched battery structure. The stacked battery structure or the notched battery structure, which can be expanded, is subsequently injected with an electrolyte and closed using a packaging layer to form a battery pouch structure.

The disclosure provides a flexible and rechargeable battery unit that is configured to a free-form shape, and/or configured to include uneven thickness, thereby providing multi-axial coverage and/or enhanced bendability and storage capacity. The battery unit and method for fabricating the battery unit includes cathode and anode substrates configured in a free-form shape, a separator layer made from a nanofiber material for enclosing either the cathode substrate or the anode substrate to form an enclosed cathode substrate or enclose anode substrate, with the enclosed cathode substrate being overlapped with the anode substrate, or the enclosed anode substrate being overlapped with the cathode substrate to form a stacked battery structure, which can be further configured to form a notched battery structure. The stacked battery structure or the notched battery structure, which can be expanded, is subsequently injected with an electrolyte and closed using a packaging layer to form a battery pouch structure.

Disclosed is a packaging for a flexible secondary battery comprising a first polymer resin layer, a barrier layer formed on the first polymer resin layer to block water and gas, and a second polymer resin layer formed on the barrier layer. The thickness of the barrier layer is 30 to 999 nm. The barrier layer is multi-layered, and comprises graphene, a dispersing agent, and pyrene as a flexible linking agent, in which there is π-π conjugation (interaction) between the graphene and the pyrene. Also disclosed is a flexible secondary battery comprising the packaging.

Disclosed is a packaging for a flexible secondary battery comprising a first polymer resin layer, a barrier layer formed on the first polymer resin layer to block water and gas, and a second polymer resin layer formed on the barrier layer. The thickness of the barrier layer is 30 to 999 nm. The barrier layer is multi-layered, and comprises graphene, a dispersing agent, and pyrene as a flexible linking agent, in which there is π-π conjugation (interaction) between the graphene and the pyrene. Also disclosed is a flexible secondary battery comprising the packaging.

According to an embodiment disclosed in the present disclosure, there is provided an electronic device including: an electrode assembly comprising a plurality of anode substrates, a plurality of cathode substrates, and a separation membrane disposed between each of the anode substrates and each of the cathode substrates, respective anode substrates and respective cathode substrates being alternately arranged, wherein each of the anode substrates includes a first coating portion, a second coating portion, and a first non-coating portion disposed between the first coating portion and the second coating portion, wherein each of the cathode substrates includes a third coating portion, a fourth coating portion, and a second non-coating portion disposed between the third coating portion and the fourth coating portion, wherein the first non-coating portion and the second non-coating portion are configured to form a wrinkle pattern, wherein the electrode assembly has a first height, and wherein a first length corresponding to a flat state of a first wrinkle pattern positioned at a center of the first height is shorter than a second length corresponding to a flat state of a second wrinkle pattern positioned at a point higher than the center of the first height, and the first length is shorter than a third length corresponding to a flat state of a third wrinkle pattern positioned at a point lower than the center of the first height.

A method for manufacturing a flexible battery includes the steps of: preparing an electrode current collector having a current collecting portion provided with at least one through-hole; carrying out electrospinning of electrode slurry including an electrode active material, a binder, a conductive material and a solvent on at least one surface of an edge of the current collecting portion and over the through-hole to form an electrode active material layer on at least one surface of the electrode current collector; and forming a battery provided with the electrode current collector having the electrode active material layer formed thereon as an electrode. A flexible battery obtained from the method is also provided.

A method for manufacturing a flexible battery includes the steps of: preparing an electrode current collector having a current collecting portion provided with at least one through-hole; carrying out electrospinning of electrode slurry including an electrode active material, a binder, a conductive material and a solvent on at least one surface of an edge of the current collecting portion and over the through-hole to form an electrode active material layer on at least one surface of the electrode current collector; and forming a battery provided with the electrode current collector having the electrode active material layer formed thereon as an electrode. A flexible battery obtained from the method is also provided.