Abstract: To increase capacity per weight of a power storage device, a particle includes a first region, a second region in contact with at least part of a surface of the first region and located on the outside of the first region, and a third region in contact with at least part of a surface of the second region and located on the outside of the second region. The first and the second regions contain lithium and oxygen. At least one of the first region and the second region contains manganese. At least one of the first and the second regions contains an element M. The first region contains a first crystal having a layered rock-salt structure. The second region contains a second crystal having a layered rock-salt structure. An orientation of the first crystal is different from an orientation of the second crystal.

Abstract: A secondary battery includes an electrode assembly, a case accommodating the electrode assembly, and a cap assembly coupled to the case to seal the case, and the case includes a bottom portion, long side portions bent and extended from the bottom portion, a first short side portion bent and extended from the bottom portion, and second short side portions bent and extended from the long side portions, the first short side portion and the second short side portions connected to each other to define a short side portion, and curvatures located between the first short side portion and the second short side portions.

Abstract: A non-aqueous electrolyte secondary battery in which a potential of a metal layer in an exterior body is kept noble, and corrosion can be suppressed, including: a power generation element wherein a positive electrode and a negative electrode are opposed to each other with a separator interposed therebetween, and the negative electrode is disposed on an outer side than the positive electrode; and an exterior body which covers the power generation element, and has a metal layer and a resin layer which covers both surfaces of the metal layer, and an average thickness t1 of a first part of the exterior body which covers upper and lower surfaces of the power generation element in a lamination direction of the power generation element and an average thickness t2 of a second part of the exterior body which covers side surfaces of the power generation element satisfy a relationship of t2/t1<0.995.

Abstract: Provided is a solid state battery which solves the problems of the conventional solid state battery, and is effectively inhibited from a dimensional change caused by charging/discharging, an increase in internal resistance and degradation of charging/discharging characteristics or cycle life at a high current. The solid state battery is provided with an electrode active material layer including a negative electrode active material, a solid electrolyte and a conductive material, wherein the negative electrode active material includes a carbonaceous material and the carbonaceous material includes a plurality of pores, a porosity of 10-60 vol %, and a pore size of 100-300 nm based on the largest diameter of the pores.

Abstract: The present invention is generally related to separators for use in lithium metal batteries, and associated systems and products. Certain embodiments are related to separators that form or are repaired when an electrode is held at a voltage. In some embodiments, an electrochemical cell may comprise an electrolyte that comprises a precursor for the separator.

Abstract: The present invention generally relates to a method for preparing metal oxide nanosheets. In a preferred embodiment, graphene oxide (GO) or graphite oxide is employed as a template or structure directing agent for the formation of the metal oxide nanosheets, wherein the template is mixed with metal oxide precursor to form a metal oxide precursor-bonded template. Subsequently, the metal oxide precursor-bonded template is calcined to form the metal oxide nanosheets. The present invention also relates to a lithium-ion battery anode comprising the metal oxide nanosheets. In a further preferred embodiment, the battery anode may comprising reduced template, which is reduced graphene oxide (rGO) or reduced graphite oxide.

Abstract: This application relates to an energy storage device. In one embodiment, the energy storage device includes an electrode unit including first and second current collectors that are separated by a separator, first and second terminals respectively connected to the first and second current collectors and a case accommodating the electrode unit. The energy storage device also includes a flexible closure covering the case and having first and second through-holes passing therethrough and exposing the first and second terminals to the environment, wherein the flexible closure contains about 15 wt % or less of SiO2. According to some embodiments, since the weight percentage of SiO2 is significantly reduced and thus, the amount and degree of the SiO2 reduction significantly decreases, a structural deformation of the flexible closure at a microscopic level is minimized. Accordingly, a wetting phenomenon is significantly reduced, and thus the life span of an energy storage device significantly increases.

Abstract: The present invention relates to a lithium secondary battery. The lithium secondary battery includes a positive electrode including a positive active material; a negative electrode including a negative active material; and an electrolyte including a non-aqueous organic solvent, a lithium salt, and an additive including a compound represented by Chemical Formula 1. The negative active material includes Si at about 0.1 wt % to about 32 wt % in amount based on a total weight of the negative active material. wherein, in Chemical Formula 1, A is a substituted or unsubstituted aliphatic chain or (—C2H4—O—C2H4-)n, and n is an integer from 1 to 10.

Abstract: The present disclosure relates to the field of energy storage device, and particularly relates to an electrode member, an electrode assembly and a secondary battery. The electrode member comprises an electrode body and a conductive structure. The conducting layer comprises a first portion having an active material and a second portion extending from the first portion; the second portion comprises a main portion and a transition portion, the transition portion is provided between the main portion and the first portion, and a width of the transition portion is larger than a width of the main portion. The conductive structure is welded with the second portion and extends along a direction away from the first portion, and at least a part of a welding region formed by the second portion and the conductive structure is positioned at the transition portion.

Abstract: Solid-state electrochemical cells including a solid-state electrolyte, where the solid-state electrolyte includes one or more dendrites formed on and/or in the solid-state electrolyte material. The dendrites of the solid-state electrolyte include a metal-containing compound that in turn includes oxygen and/or sulfur.

Abstract: The present invention relates to multilayer packaging structure (10) for a thin film battery (5) wherein a metal layer (14) is sandwiched between a first layer (11) and a second layer (12). A first opening (21) is arranged in the first layer (11) such that a first portion (24) of the metal layer (14) associated with the first opening (21) is exposed and is configured to be able to be in electrical contact with a current collector of the thin film battery (5). A second opening (22) is arranged in the second layer (12) such that a second portion (25) of the metal layer (14) associated with the second opening (22) is exposed and is configured to be able to be electrically connected to an external circuitry. The invention further relates to a method (30) for manufacturing of the multilayer packaging structure (10).

Abstract: A solid electrolyte for all-solid sodium battery expressed by Na3-xSbS4-xAx, wherein A is selected from F, Cl, Br, I, NO3, BH4, BF4, PF6, ClO4, BH4, CF3SO3, (CF3SO2)2N, (C2F5SO2)2N, (FSO2)2N, and [B(C2O4)2]; and x is 0<x<3.

Abstract: A semiconductor device in which a circuit and a battery are efficiently stored is provided. In the semiconductor device, a first transistor, a second transistor, and a secondary battery are provided over one substrate. A channel region of the second transistor includes an oxide semiconductor. The secondary battery includes a solid electrolyte, and can be fabricated by a semiconductor manufacturing process. The substrate may be a semiconductor substrate or a flexible substrate. The secondary battery has a function of being wirelessly charged.

Abstract: The present disclosure provides a secondary battery which comprises a cap plate, an electrode assembly and a first protecting piece. The cap plate comprises a first electrode terminal. The electrode assembly comprises a main body and a first electrode tab. The first electrode tab is electrically connected with the first electrode terminal. The first electrode tab includes a first connecting portion and a first bending portion, the first connecting portion is electrically connected with the first electrode terminal, and the first bending portion connects the main body and the first connecting portion. The first protecting piece is fixed to a bottom of the first connecting portion. The first protecting piece includes a main portion and a first curve portion, the first curve portion is connected with the main portion and is curved relative to the main portion. The first bending portion is bent downwardly along the first curve portion.

Abstract: A case for a secondary battery, a secondary battery, and a battery module are provided. Because an uneven part is provided in each of an upper case and a lower case of the secondary battery the upper case and the lower case may be coupled to each other without being misaligned in a process of manufacturing the prismatic type secondary battery.

Abstract: A main object of the present disclosure is to provide a cathode mixture with good rate property. The present disclosure achieves the object by providing a cathode mixture comprising: a solid solution of a sulfur simple substance, P2S5 and Li3PO4, and a conductive auxiliary material, and a molar ratio of the Li3PO4 to the P2S5 is 0.05 or more and 0.67 or less.

Abstract: Systems and methods that provide an improved mechanism for attaching a sensor wire to a bus bar in a battery module are disclosed. A battery module according to the present disclosure may include a bus bar comprising a rivet hole and a plurality of battery cells electrically coupled to the bus bar. The battery module may also include a sensor wire comprising a terminal end, as well as a blind rivet passing through the rivet hole of the bus bar and coupling the bus bar to the terminal end of the sensor wire. Attaching the sensor wire to the bus bar with a blind rivet may provide one or more of the following mechanical advantages: fast assembly, robustness for low power applications, elimination of the need to wait for an adhesive to cure, and elimination of the need for double-sided access of the bus bar.

Abstract: A shock absorbing device for a rechargeable battery, in particular for supplying a machine tool with electrical energy, wherein the rechargeable battery includes a housing for accommodating at least one energy storage cell. The shock absorbing device includes at least one shock absorbing element for absorbing shock energy exerted on the housing of the rechargeable battery.

Abstract: This application relates to a battery comprising a positive electrode plate, a separator, and a negative electrode plate, wherein the positive electrode plate comprises a positive electrode current collector and at least two layers of positive active material coated on at least one surface of the positive electrode current collector, and wherein an underlying positive active material layer in contact with the positive electrode current collector comprises a first positive active material, a first polymer material and a first conductive material; and wherein an upper positive active material layer in contact with the underlying positive active material layer and away from the positive electrode current collector comprises a second positive active material, a second polymer material and a second conductive material, and the first polymer material comprises fluorinated polyolefin and/or chlorinated polyolefin polymer material. The battery has good safety and improved electrical properties.

Abstract: 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.