Abstract: A nonaqueous electrolyte for a lithium ion battery includes a lithium salt, a first nonaqueous solvent, and an additive mixture comprising a first operative additive of lithium difluorophosphate and a second operative additive of either fluoro ethylene carbonate or vinylene carbonate. A lithium-ion battery includes a negative electrode, a positive electrode comprising NMC with micrometer-scale grains, a nonaqueous electrolyte having lithium ions dissolved in a first nonaqueous solvent, and an additive mixture having a first operative additive of either fluoro ethylene carbonate or vinylene carbonate and a second operative additive of either 1,3,2-dioxathiolane-2,2-dioxide, another sulfur-containing additive, or lithium difluorophosphate.

Abstract: In a nonaqueous electrolyte secondary battery a separator includes a porous substrate, a first filler layer, and a second filler layer. The first filler layer comprises phosphate particles having a BET specific surface area of 5 to 100 m2/g and polyvinylidene fluoride and is formed on a first surface that faces the positive electrode side of the substrate and contacts the positive electrode. The second filler comprises inorganic particles which have a melting point higher than that of the phosphate particles and is formed on at least one of a second surface that faces the negative electrode side of the substrate and the area between the substrate and the first filler layer. The content of the polyvinylidene fluoride in the first filler layer is 10 to 50 mass % and is higher in a region on the positive electrode side than in a region on the substrate side.

Abstract: Systems and methods are described herein for reducing electromagnetic interference (EMI) affecting measurements of a battery module monitoring board. A battery module system includes battery cells on a top side and a bottom side of the battery module. Each battery cell is electrically coupled between an adjacent pair of busbars. Each busbar is coupled to at least one sensor wire. One busbar, which spans the top and bottom sides of the battery module, is coupled to two sensor wires such that EMI interference affecting measurement signals (e.g., noise signals accompanying voltage readings) associated with the top side of the battery module are in-phase with one another and the measurement signals associated with the bottom side of the battery module are in-phase with one another, such that the EMI interference generally cancels in measurement calculations.

Abstract: The present invention relates to a positive electrode active material and a lithium secondary battery using a positive electrode containing the positive electrode active material. More particularly, the present invention relates to a positive electrode active material that is able to solve a problem of increased resistance according to an increase in Ni content by forming a charge transport channel in a lithium composite oxide and a lithium secondary battery using a positive electrode containing the positive electrode active material.

Abstract: This disclosure relates to a rechargeable battery cell, comprising: an active metal; at least one positive electrode; at least one negative electrode comprising an active material selected from the group consisting of an insertion material made of carbon, an alloy-forming active material, an intercalation material which does not comprise carbon, and a conversion active material; an SO2 based electrolyte comprising a first conducting salt which has the formula (I), wherein: M is a metal selected from the group consisting of alkali metals, alkaline earth metals, metals of group 12 of the periodic table of the elements, and aluminum; x is an integer from 1 to 3; R1, R2, R3 and R4 are selected independently of one another from the group consisting of C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl, C3-C10 cycloalkyl, C6-C14 aryl and C5-C14 heteroaryl; and Z is aluminum or boron.

Abstract: A polymer electrolyte includes a polyethylene oxide matrix, a plasticizer additive, a solute, and a filler. The plasticizer additive includes an ionic liquid and the filler includes zinc oxide. An energy storage device includes an anode, a cathode and the polymer electrolyte. An energy storage device includes a zinc anode, a cathode and a polymer electrolyte, in which the polymer electrolyte includes a polyethylene oxide matrix and a plasticizer additive that includes an ionic liquid.

Abstract: This invention relates to novel battery separators comprising ceramic nanowires, more specifically, inorganic carbonate nanowires. The novel ceramic nanowire separators are suited for use in lithium batteries, such as lithium ion rechargeable, lithium metal rechargeable and lithium sulfur rechargeable batteries, and provide high safety, high power density, and long cycle life to the fabricated rechargeable batteries. The battery separators comprise ceramic nanowires that may be optionally bonded together by organic polymer binders and/or may further comprise organic nanofibers.

Abstract: This disclosure relates to a rechargeable battery cell comprising an active metal, at least one positive electrode, at least one negative electrode, a housing and an electrolyte, the positive electrode being designed as a high-voltage electrode and the electrolyte being based on SO2 and at least one first conducting salt having the formula (I), M being a metal selected from the group formed by alkali metals, alkaline earth metals, metals of group 12 of the periodic table of the elements, and aluminum; x being an integer from 1 to 3; the substituents R1, R2, R3 and R4 being selected independently of one another from the group formed by C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl, C3-C10 cycloalkyl, C6-C14 aryl and C5-C14 heteroaryl; and Z being aluminum or boron.

Abstract: The present invention relates to a secondary battery structure having a windable flexible polymer matrix solid electrolyte and a manufacturing method thereof. The manufacturing method comprises the steps of electroplating a positive electrode on a first side of a cloth solid electrolyte; then electroplating a negative electrode on a second side opposite to the first side of the cloth solid electrolyte; and conducting a heat treatment process to form a first carbonized layer between the positive electrode and the cloth solid electrolyte, and a second carbonized layer between the negative electrode and the cloth solid electrolyte.

Abstract: Disclosed herein is a separator for an electrochemical element, comprising a fibrous structure, wherein the fibrous structure has a first fibrous layer part in which short fibers and/or pulp-like fibers are intertwined with each other, and a second fibrous layer part; some of the short fibers and/or the pulp-like fibers constituting the first fibrous layer part penetrates the second fibrous layer part; and a pore diameter distribution of the fibrous structure satisfies the following formula: 0 ?m<Dmax<18 ?m, and 0 ?m?(Dmax?Dave)<13 ?m, wherein Dmax is a maximum pore diameter (?m) of the fibrous structure, and Dave is an average pore diameter (?m) of the fibrous structure.

Abstract: The invention discloses a lithium electrode. The electrically conductive structure layer has a recess with one-side opening, and the lithium metal layer is disposed on the bottom of the recess. The solid electrolyte layer and the electrolyte storage layer are disposed thereon sequentially. When the lithium metal is plated, the plated lithium metal is restricted by the solid electrolyte layer to push and compress the electrolyte storage layer. Therefore, the growth of the lithium dendrites is limited efficiently. The penetration through issue of the lithium dendrites will not be occurred so that the safety of the lithium metal battery is improved greatly.

Abstract: Electrical storage devices (10,38) are provided with pasted negative electrodes (12) and pasted positive electrodes (15) with porous separators (18) between them, with current collectors (20,22) disposed between the separator (18) and the negative and positive pastes (13,16), respectively.

Abstract: A rechargeable transition metal battery includes a negative electrode, a positive electrode and an electrolyte. The negative electrode includes a negative electrode material which is a transition metal or an alloy of the transition metal. The positive electrode is electrically connected to the negative electrode and includes a host material and a positive electrode material. The host material includes a carbon. The positive electrode material is connected to the host material, and the positive electrode material is a compound of a metal, an elemental chalcogen or an elemental halogen. The electrolyte is disposed between the positive electrode and the negative electrode.

Abstract: An electrode assembly includes a positive electrode plate and a negative electrode plate wound or stacked to form a bend region, and a barrier layer provided at the bend region. At least part of the barrier layer is located between the positive electrode plate and the negative electrode plate that are adjacent to each other, and is configured to prevent at least part of ions deintercalated from the positive electrode plate from being intercalated into the negative electrode plate in the bend region.

Abstract: The present disclosure provides a composite wherein NaCl nanoparticles are uniformly dispersed on reduced graphene oxide (rGO), a positive electrode active material including the same, a sodium secondary battery including the same, and a method for preparing the same. The positive electrode active material according to the present disclosure has a structure wherein NaCl nanoparticles are uniformly dispersed on rGO in a one-step process through chemical self-assembly. Therefore, the positive electrode active material according to the present disclosure exhibits superior electrochemical properties with high capacity because the small NaCl particles are dispersed uniformly and is economically favorable because the preparation process is simple.

Abstract: Described herein are electrochemical cells fabricated with current collectors comprising polymer bases and metal layers and methods of interconnecting these current collectors or, more specifically, interconnecting their metal layers. For example, a current collector, positioned between two other current collectors, can have an opening allowing these two other current collectors to form a direct interface. This interface not only directly interconnects the metal layers on these two current collectors but also indirectly interconnects the two metal layers of the middle current collector, which are positioned on the opposite sides of the polymer base of this current collector. In some examples, the metal layers of current collectors are reinforced by external metal foils that help to maintain continuity and/or repair any discontinuities in the metal layers when these metal layers are welded together. For example, welding may push portions of the polymer bases away from the weld zone.

Abstract: Proton conductive membrane includes a proton selective layer of 80-100% carbon with sp2 hybridization having a thickness of 0.3-100 nm, with 0-20% of hydrogen, oxygen, nitrogen and sp3 carbon; wherein the sp2 carbon is in a form of graphene-like material; the proton selective layer having a plurality of pores formed by any of 7, 8, 9 or 10 sp2 carbon cycles or a combination thereof, with the pores having an effective diameter of up to 0.6 nm; an ionomeric polymer layer on the proton selective layer. Total thickness of the proton conductive membrane is less than 50 microns. The ionomeric polymer is PFSA (perfluorinated sulfonic acid), PVP (polyvinylpyrrolidone) or PVA (poly vinyl alcohol) with iodide or bromide counterion dissolved inside. The graphene-like material is CVD graphene or reduced graphene oxide (rGO). A D to G Raman band ratio of the membrane is more than 0.1.

Abstract: One variation of a battery unit includes: a series of anode collectors; a set of anode electrodes including anode material arranged on both side of the anode collectors; a set of anode interconnects interposed between and electrically coupling adjacent anode collectors and folded to locate the anode collectors in a boustrophedonic anode stack; a series of cathode collectors; a set of cathode electrodes including cathode material arranged on both side of the cathode collectors; a set of cathode interconnects interposed between and electrically coupling adjacent cathode collectors and folded to locate the cathode collectors in a boustrophedonic cathode stack with cathode collectors interdigitated between anode collectors in the boustrophedonic anode stack; and a set of separators arranged between the anode and cathode electrodes and transporting solvated ions between the anode and cathode electrodes.

Abstract: The present technology relates to self-standing electrodes, their use in electrochemical cells, and their production processes using a water-based filtration process. For example, the self-standing electrodes may be used in lithium-ion batteries (LIBs). Particularly, the self-standing electrodes comprise a first electronically conductive material serving as a current collector, the surface of the first electronically conductive material being grafted with a hydrophilic group, a binder comprising cellulose fibres, an electrochemically active material, and optionally a second electronically conductive material. A process for the preparation of the self-standing electrodes is also described.

Abstract: A positive current collector, a secondary battery, and an electrical device are provided. In some embodiments, the positive current collector includes: a support layer; and a conductive layer located on at least one surface of the support layer, where the conductive layer includes a first metal portion configured to connect to a tab, where, along a thickness direction of the conductive layer, the first metal portion includes at least three sublayers, and melting points of the at least three sublayers rise stepwise in ascending order of distance from the support layer. In the embodiments of this application, the first metal portion includes at least three sublayers, and the melting points of the at least three sublayers rise stepwise in ascending order of distance from the support layer, thereby helping increase a bonding force between the conductive layer and the support layer and reducing the probability of peel-off and delamination between the layers.