Abstract: A battery cell includes a plurality of cathodes and a plurality of anodes. A plurality of solid electrolyte layers are arranged between first adjacent ones of the plurality of cathodes and the plurality of anodes. A plurality of clad current collectors are arranged between second adjacent ones of the plurality of cathodes and the plurality of anodes. The plurality of clad current collector includes a first foil layer, a second foil layer and a thermal interface layer including adhesive and at least one material that increases thermal and electrical conductivity of the thermal interface layer.

Abstract: A composite current collector contains: a substrate and a composite portion formed on at least one surface of the substrate. The composite portion includes a connection layer, a conductive layer, and an insulation layer. The conductive layer is located on the connection layer, and the insulation layer is defined between the connection layer and the conductive layer. A first side of the insulation layer is connected with the connection layer, and a second side of the insulation layer is connected with the conductive layer. The insulation layer is configured to stop an action of the connection layer to the conductive layer. Thereby, reaction of the conductive layer to the connection layer is eliminated by the insulation layer to enhance connection strength of the composite portion and the substrate, thus prolonging the service life of the composite current collector.

Abstract: The present application relates to the technical field of batteries, and in particular to a current collector, an electrode sheet, an electrode assembly, a battery cell, a battery and an electric apparatus. The current collector includes: a support layer; and a conductive layer on at least one of two opposite sides of the support layer, where when the support layer is heated and shrinks, the conductive layer shrinks with the support layer to form a hole around a heated portion, the conductive layer includes a first conductive layer in contact with the support layer, and the first conductive layer is a granular conductive layer. On this basis, the safety performance can be improved.

Abstract: Embodiments described herein relate to electrochemical cells and electrodes with reinforced current collectors. In some embodiments, an electrode can include a current collector and an electrode material disposed on a first side of the current collector. A reinforcing layer can be disposed on a second side of the current collector. The reinforcing layer can have a modulus of elasticity sufficient to reduce the amount of stretching incident on the current collector during operation of the electrode. In some embodiments, a polymer film can be disposed on the reinforcing material. In some embodiments, the electrode can further include an adhesive polymer disposed between the reinforcing material and the polymer film. In some embodiments, the reinforcing material can have a thickness of less than about 10 ?m. In some embodiments, the reinforcing layer can include an adhesive polymer.

Abstract: A battery cell includes a first current collector and a cathode electrode arranged adjacent to the first current collector and including lithium active material. A separator is arranged adjacent to the cathode electrode. The battery cell includes a second current collector. A porous conductive layer is arranged on the second current collector between the second current collector and the separator.

Abstract: This invention relates to a method for preparing of a submicro/nano-porous NiO/apatite-type lanthanum silicate anode functional layer. In the method a functional layer nanopowder, ethyl cellulose and terpineol are added into a rotary evaporation bottle containing anhydrous ethanol, and a suspension obtained after mixing is dispersed ultrasonically. The anhydrous ethanol in the suspension is removed by a rotary evaporator. When the suspension becomes a viscous paste, the paste is taken out and ground to complete the preparation of a functional layer paste. The functional layer paste is applied onto an anode substrate by screen printing, and 3 sublayers are screen printed. After dried, the sublayers are heat treated and sintered. The heating rate, the cooling rate and the holding time are controlled in the heating and cooling processes to complete the preparation of the anode functional layer.

Abstract: A roll-to-roll continuous coater for CCM preparation, and a coiled material connection method are provided. The coater has a coiled material connection mechanism that includes an upper rack (2) and a lower rack (3). A vacuum suction plate I (2-3) provided with a driving device for achieving displacement and a vacuum suction plate II (3-1) provided with a solid glue spraying device (3-3) are respectively disposed on the bottom of the upper rack (2) and the top of the lower rack (3). An optical fiber sensor I (2-4) and an optical fiber sensor II (3-2) are respectively disposed in the vacuum suction plate I (2-3) and the vacuum suction plate II (3-1). A tension detection device (4) is disposed between the lower rack (3) and a driving roller assembly (1).

Abstract: Systems and methods are provided for an electrolyte for a flow battery comprising a redox active species and a plurality of supporting salts dissolved in the electrolyte. The redox active species having a concentration greater than 2.0 M and the plurality of dissolved supporting salts comprising a potassium salt, and ammonium salt, a calcium salt, and a manganese salt.

Abstract: Catalyst (14) having particles with a metal oxide and a carbonaceous material, wherein the metal oxide is an iron oxide or manganese oxide, and the carbonaceous material is a graphenic carbon material. Metal-air battery (10) having a metal electrode (11), an air electrode (13) with the catalyst (14) and an electrolyte (12) disposed between the metal electrode (11) and the air electrode (13).

Abstract: A composition for manufacturing an electrode, the composition including an electrically conductive carbon-based compound, at least one species able to form a catalyst, and cellulose microfibrils encapsulating chitosan. The cellulose microfibrils create a fibrous mesh binding the composition while limiting coating of the catalyst. Thus, the catalyst remains accessible to the surrounding environment, to allow the redox reactions at the electrode. The electrochemical performances of the electrode are consequently improved. The composition is furthermore particularly adapted for shaping an electrode by 3D printing.

Abstract: In one aspect, a method for manufacturing a battery includes forming a battery cell relative to a substrate using a layer-deposition sub-process, with the layer-deposition sub-process including: depositing a layer of first electrode material relative to the substrate; depositing a first layer of electrolyte material on top of the layer of first electrode material; depositing a layer of second electrode material on top of the first layer of electrolyte material; and depositing a second layer of electrolyte material on top of the layer of second electrode material. Additionally, the method includes cycling through the layer-deposition sub-process one or more additional times to form one or more additional battery cells relative to the substrate, with each additional battery cell being formed on top of a previously formed battery cell such that a battery cell stack is created relative to the substrate.

Abstract: In one embodiment, a depassivating circuit includes a battery, a resistive load coupled to the battery, and a magnetic field sensor. The magnetic field sensor detects a presence of a magnetic field. The magnetic field sensor depassivates the battery by causing current from the battery to flow through the resistive load, in response to the presence of the magnetic field. The magnetic field sensor detects removal of the magnetic field. The magnetic field sensor ends depassivation of the battery, in response to the removal of the magnetic field.

Abstract: A fuel cell having a plurality of power generating cells stacked in a thickness direction via an interconnector, the power generating cells comprising a solid electrolyte plate, an anode electrode disposed on one side of the solid electrolyte plate, and a cathode electrode disposed on the other side of the solid electrolyte plate, the interconnector electrically connecting the anode electrode and the cathode electrode, the anode electrode and the cathode electrode having a support layer configured of metal, and the support layer of any one of the anode electrode and the cathode electrode being bonded to the interconnector by welding, and the support layer of the other one of the anode electrode and the cathode electrode being metallic bonded to the interconnector by a method other than welding.

Abstract: A method of manufacturing a current collector for an electrochemical cell assembly includes providing a base plate including a surface, bend-forming the base plate to create a plurality of open corrugations protruding from the surface, each open corrugation including a first flange and a second flange, and forming a foot between the first flange and the second flange of each open corrugation to close each open corrugation and form a corrugation.

Abstract: A fuel cell (FC) assembly having a stack that includes a bipolar plate and a gas diffusion layer (GDL) composed of a microporous metal foam having embedded therein a plurality of discrete microchannels or a plurality of discrete microstructures.

Abstract: A long-life sealing structure of a membrane electrode for fuel cells includes an anode plate and a cathode plate, which are stacked together and sandwich a proton exchange membrane and two diffusion sheets between them. Both ends of the anode plate and the cathode plate are provided with through-holes. The outer surface of the anode plate is provided with a sealing groove assembly including a first ring groove, a strip groove and a second annular groove. The first ring groove is embedded with a sealing ring. The interior of the strip groove is stepped, with guide grooves on both sides extending outward to the surface of the anode plate; the strip groove is embedded with a sealing strip with its outer surface fitted with a cover. The adsorption-type sealing mechanism provides targeted sealing for the connection between the membrane electrode and the catalytic sheet, enhances the sealing performance.

Abstract: The invention relates to a method of attaching a gasket (4) to a bipolar plate (12). The method comprises the steps of applying and aligning a first gasket foil (4a) to a second gasket foil (4b) having connection recesses (8), connecting the first gasket foil (4a) to the second gasket foil (4b), so that the gasket (4) is formed, placing the gasket (4) on the bipolar plate (12) so that the second gasket film (4b) with the bonding recesses (8) abuts the bipolar plate (12) and performing an embossing step in which an embossing force is applied with an embossing tool (20) in the region of the connecting recesses (8) so that an embossed adhesive point (24) is formed and the first gasket foil (4a) is bonded to the bipolar plate (12) via an adhesive means (16) arranged in the connecting recess (8) on the first gasket foil (4a).

Abstract: A method for producing a bipolar plate strand comprises: providing of the unipolar plate strands; moving of the unipolar plate strands in the direction of a roll gap of a roll pair provided with roll structures of a rolling device; sending of a laser beam of a laser device onto a rotating mirrored polygon wheel, so that the laser beam is directed at a plurality of individual positions of a surface of one or both of the unipolar plate strands and the individual positions are thus heated to a joining temperature immediately before or upon entry of the unipolar plate strands in the roll gap; and joining of the unipolar plate strands at least at one of the individual positions of the surface to form a bipolar plate strand upon transporting of the unipolar plate strands through the roll gap under the action of pressure. A method for production of a bipolar plate as well as a device to implement the method are also provided.

Abstract: A fuel cell system includes: a first fuel cell; a second fuel cell; a cathode configured to receive a positive charge from the first fuel cell and the second fuel cell; an anode disposed apart from the cathode and configured to receive a negative charge from the first fuel cell and the second fuel cell; a manifold enclosing the anode and the cathode; coolant disposed within the manifold and surrounding the cathode and the anode; and a seal disposed between the cathode and the anode so as to prevent the coolant from leaking into the first fuel cell, wherein the cathode includes a seal portion disposed adjacent to the seal and a remaining portion separated from the seal by the seal portion, and wherein the remaining portion of the cathode is configured to be non-parallel with the anode so as to reduce shunt current at the seal portion.

Abstract: A fuel cell comprising a series of cascaded cell stacks comprising at least one humidifier-degasser coupled to the cell stacks proximate a stack inlet; the at least one humidifier-degasser comprising at least one degasification section fluidly coupled upstream of at least one humidifier section; and at least one inert concentrator cell coupled downstream from the cell stacks proximate a stack vent.

Abstract: The invention relates to a valve (10) for regulating oxygen in a fuel cell system (11), comprising: —a valve housing (12), which has a valve seat (13) and a through-opening (14) in the valve seat (13); —a valve shaft (15), which has a valve disk (16) formed thereon for closing the through-opening (14) in the valve seat (13) in a closed state of the valve (10) and for releasing the through-opening (14) in a released state of the valve (10); and —a moving means (17) for linearly moving the valve disk (16) between an opening position in an open state, in which open state the valve disk (16) is spaced apart from the valve seat (13), and a closing position in the closed state, in which closed state the valve disk (16) is positioned on the valve seat (13), and for rotationally moving the valve shaft (15) in order to pivot the valve disk (16) between the opening position and a releasing position in the released state, in which released state at least part of the valve disk (16) is spaced farther apart from the valve

Abstract: A fuel cell system includes a coolant control valve to switch a flowing path of a coolant passing through a fluid passage connected to a fuel cell stack, and a controller to control a valve opening amount of the coolant control valve while performing a start sequence previously defined, when a condition for normal start of the fuel cell stack is satisfied, and the coolant control valve is formed by integrating a first valve to switch a flowing path of a coolant flowing into a first pump with a second valve to switch a flowing path of a coolant pumped by the first pump.

Abstract: Proposed are a fuel cell system and a method of controlling the fuel cell system. The fuel cell system may comprise a discharge valve configured to adjust a flow rate between an inlet and an outlet, connected at the inlet to a water trap connected to an anode of a fuel cell stack, and connected at the outlet to an external exhaust line, and a controller configured to derive an error value on the basis of a difference between condensate water production amount and discharge amount of the anode of the fuel cell stack when the discharge valve is in an open state, configured to correct the condensate water production amount of the anode on the basis of the error value when the discharge valve is in a closed state, and configured to open the discharge valve when the corrected condensate water production amount exceeds a predetermined first reference value.

Abstract: A fuel cell system includes a hotbox configured to house a fuel cell stack, the fuel cell stack including a temperature sensor configured to detect temperature inside the fuel cell stack. The system includes a first tank including a first valve and configured to store methanol. The system includes a second tank including a second valve and configured to store water. The system includes a controller communicatively coupled to receive signals from the temperature sensor and control each of the first valve and the second valve. The controller is configured to set a dosing rate of methanol, based on a temperature of the fuel cells stack, to a predefined dosing rate and initiate operating at least one of the first valve and the second valve to deliver a mixture of methanol and water at the predefined dosing rate to prevent re-oxidation of an anode of the fuel cell stack.

Abstract: According to an embodiment, a power supply control system includes a plurality of fuel cell systems mounted in an electric device that operates using electric power, a first controller configured to control the plurality of fuel cell systems in an integrated way, and a second controller configured to control the fuel cell system to which the second controller belongs among the plurality of fuel cell systems. The second controller acquires a state of the fuel cell system to which the second controller belongs and notifies the first controller of the state of the fuel cell system. The first controller controls power generation of each of the plurality of fuel cell systems on the basis of the state of the fuel cell system to which the second controller belongs acquired by the second controller.

Abstract: This gel electrolyte contains a liquid, inorganic nanofibers, and a polymer obtained by polymerizing a compound which has an imidazolium salt having an alkenyl group represented by formula (1-1) and an imidazolium salt having an alkenyl group represented by formula (2-1) at both ends, and in which the compound is swelled by the liquid; the gel electrolyte exhibits proton conductivity equivalent to that of Nafion at room temperature, exhibits proton conductivity greater than or equal to that of Nafion at high temperatures exceeding 60° C., and has excellent strength. (In the formula, X? indicates monovalent anions, Y? represents mutually independent monovalent anions, and n represents an integer 1-20.

Abstract: A preparation process of composite membrane for fuel cells uses an expanded polytetrafluoroethylene microporous base membrane as a skeleton. The base membrane is subjected to an impregnation treatment of mixed solutions having different concentrations from low to high. Specifically, the treatment tank I is provide with a mixed solution of a 0.1 wt. %-1 wt. % perfluorosulfonic acid resin solution, a water-retaining agent and a free radical quencher, the treatment tank II is provided with a mixed solution of a 2 wt. %-6 wt. % perfluorosulfonic acid resin solution, a water-retaining agent and a free radical quencher, and the treatment tank III is provided with a mixed solution of a 7 wt. %-20 wt. % perfluorosulfonic acid resin solution and a sulfonated polyetheretherketone solution. The resulting proton exchange composite membrane does not generate pore residues and avoids hydrogen permeation when in use.

Abstract: Rebalancing methods and systems for redox flow battery systems are described. A reductant is selectively introduced from a reductant container into one or more of a rebalancing tank, the negative electrolyte tank, or the positive electrolyte tank to reduce Fe3+ ions to Fe2+ ions. The rebalancing system can be controlled by a controller in response to one or more measured properties of the iron flow battery.

Abstract: Systems and methods are provided for assembling and operating an electrode assembly for a redox flow battery system. In one example, the electrode assembly may include an inflatable housing in which a negative electrode spacer and a positive electrode may be positioned, wherein the inflatable housing may inflate responsive to applied internal pressure during operation of the redox flow battery system. In some examples, the electrode assembly may be assembled via roll-to-roll processing and may be mechanically and fluidically coupled to electrode assemblies of like configuration. In this way, tolerance stacking may be decreased, processing may be simplified, and costs may be reduced relative to molding-based processes for electrode assembly manufacturing.

Abstract: A method of manufacturing a unit cell having a negative electrode, a separator, and a positive electrode are stacked and placed between guide rollers. One of the positive electrode and the negative electrode. The separator is coated with a binder, and the separator is dipped in a solvent to soften a cured binder before the separator is put between the guide rollers. An apparatus for manufacturing a unit cell includes a reservoir in which at least two or more transfer rollers that rotate while the separator passes therethrough are mounted, and a solvent is stored at a predetermined level; and a chamber into which the separator passing through a reservoir is put together with the positive electrode and the negative electrode. Guide rollers are disposed so that the negative electrode and the positive electrode move to both surfaces of the separator, respectively.

Abstract: An assembled battery includes a plurality of battery cells stacked in a first direction, each battery cell including a terminal on a surface facing a second direction that intersects the first direction, and a busbar being welded to the terminal. A manufacturing device includes: a plurality of pressing pieces arranged along the first direction, a tip of each of the pressing pieces in the second direction facing the respective terminal with the busbar interposed between the pressing piece and the terminal; a rotor that extends along the first direction and that is rotated by an actuator, the rotor being engaged with the pressing pieces and being configured to press the pressing pieces against the busbars when rotated about an axis; and a welder that welds the busbars and the terminals. The welder welds the busbars to the terminals while the rotor presses the busbars against the terminals.

Abstract: A folding processing apparatus for battery cells includes a folding tool assembly including a first folding processing tool configured to fold a sealing portion of a first battery cell when the folding tool assembly is transferred forward in a first direction, a second folding processing tool disposed offset from the first folding processing tool and configured to fold a sealing portion of a second battery cell when the folding tool assembly is transferred in a reverse direction opposite to the first direction, and a mounting plate on which the first folding processing tool and the second folding processing tool are mounted; and an assembly transferring tool configured to transfer the folding tool assembly.

Abstract: A battery winding apparatus and method is provided. The battery winding method includes steps of providing a first sheet group comprising a cathode sheet, a second sheet group comprising an anode sheet, and a winding mechanism for a winding operation, where the first sheet group and/or the second sheet group are pre-formed with a separator or separators; and winding the first sheet group and the second sheet group by the winding mechanism to obtain a battery cell. The battery winding method forms the first sheet group and the second sheet group by pre-bonding the separator or separators to the cathode sheet and/or the anode sheet to solve the problem of wrinkling of the sheet or changing the core into the S-shaped and low winding efficiency in the prior art.

Abstract: A deviation detection method and a deviation detection device for detecting positional deviation of an electrode assembly during winding are provided. The method comprises: obtaining a plurality of first images and a plurality of second images by using a photographing unit during the winding process of the electrode assembly, where the first image includes a first electrode sheet, and the second image includes a second electrode sheet; matching a first image with a second image, where the first image and the second image contain the same or corresponding identification objects, and the identification objects are portions periodically formed on each winding layer of the electrode assembly; and determining whether the electrode assembly is deviated according to the boundary of the first electrode sheet in the first image and/or the boundary of the second electrode sheet in the second image in a group of matching first and second images.

Abstract: A battery cell includes a plurality of electrodes including a plurality of anode electrodes and a plurality of cathode electrodes. The plurality of electrodes is arranged in one of a stacked architecture and a winding architecture. Each of the plurality of electrodes includes a current collector and active material arranged on opposite sides of the current collector. The current collector of one or more outermost ones of the plurality of electrodes is thicker than the current collectors of remaining ones of the plurality of electrodes having the same anode/cathode type.

Abstract: A battery cell includes an electrode sheet. The electrode sheet includes an electrode sheet body and a plurality of tabs connected to the electrode sheet body. The width of each of the plurality of tabs is different from one another; or the length of each of the plurality of tabs is different from one another. The electrode sheet and the battery cell having the electrode sheet ensures that each of the tabs in the electrode sheet can electrically conduct well with the tab lead. Thus, the battery cell has the advantage of good electrical conductivity.

Abstract: Lithium-ion batteries are provided that variously comprise anode and cathode electrodes, an electrolyte, a separator, and, in some designs, a protective layer. In some designs, at least one of the electrodes may comprise a composite of (i) Li2S and (ii) conductive carbon that is embedded in the core of the composite. In some designs, the protective layer may be disposed on at least one of the electrodes via electrolyte decomposition. Various methods of fabrication for lithium-ion battery electrodes and particles are also provided.

Abstract: A polymer-ceramic composite membrane and methods of making the same. The composite membrane includes a polymer scaffold and a ceramic nanoparticle disposed within the polymer scaffold.

Abstract: A flexible self-supporting solid electrolyte membrane, an all-solid-state battery including the membrane, and a manufacturing method thereof are disclosed. The solid electrolyte membrane may include: a substrate including pores therein; and a solid electrolyte layer disposed on at least one surface of the substrate and including a solid electrolyte and a cured compound. At least a portion of the solid electrolyte layer may penetrate into the pores of the substrate to form a conduction path of lithium ions in a thickness direction of the substrate.

Abstract: A negative electrode-glass electrolyte layer laminate including a negative electrode and a glass electrolyte layer on at least one surface of the negative electrode, wherein the negative electrode includes a surface passivated lithium-containing metal foil, and the laminate electrochemically operable in the absence of external pressure, an all-solid-state secondary battery including the negative electrode-glass electrolyte layer laminate, and a method of manufacturing the negative electrode-glass electrolyte layer laminate.

Abstract: The present disclosure is directed to processes for the preparation of argyrodite type materials, use of such argyrodite type materials in synthesis of solid-state electrolytes, and inclusion in secondary rechargeable batteries such as lithium ion batteries (LIBs), solid state batteries (SSBs), and/or lithium metal batteries (LMBs). For example, in an aspect the present disclosure provides a process that includes contacting a lithium source with a phosphorus source in a solvent-reagent at a temperature from about 80° C. to about 120° C. to form a precipitate comprising the Li7-xPS6-xYx (where Y is Cl, Br, or I, and 0<x<2) and a supernate, and then collecting the precipitate. The solvent-reagent includes SyYw where y?1, Y is as discussed previously (Y is Cl, Br, or I), and 0<w?2.

Abstract: Provided is a titanic acid-based solid electrolyte material free from risk of production of hydrogen sulfide, free of rare earth, and having good lithium-ion conductivity. The titanic acid-based solid electrolyte material is made of a lepidocrocite titanate having a structure in which a plurality of host layers are laid one on top of another, the host layer being formed so that octahedra each formed of a titanium atom coordinated with six oxygen atoms are two-dimensionally chained while sharing ridges, and lithium ions are intercalated in interlayers between the host layers, and titanium sites in the host layers are partially substituted by cations with valences of +1 to +3.

Abstract: A solid electrolyte sheet of the present disclosure comprises a nonwoven fabric and a solid electrolyte disposed inside the nonwoven fabric. The pore diameter of the nonwoven fabric is 15 ?m or less. The ratio of the pore diameter relative to a particle diameter of the solid electrolyte (pore diameter/particle diameter) is 5.0 or more.

Abstract: A solid electrolyte includes sulfide-based solid electrolyte particles and lithium-metal-oxide on the surface of the particles, wherein in an X-ray diffraction analysis of the solid electrolyte, a full width at half maximum of a main peak is less than or equal to about 0.160.

Abstract: Disclosed is a solid electrolyte for a solid-state battery having improved water resistance. The solid electrolyte for a solid-state battery includes a sulfide-based solid electrolyte and a LiBr-containing absorbent material, wherein the binding energy of Li1s shows a peak observed at 54.2-56.1 eV, and the binding energy of Br3d shows a peak observed at 67.5-69.5 eV, as determined by X-ray photoelectron spectroscopy (XPS).

Abstract: This disclosure relates to a flexible membrane of sulfide solid electrolyte. In one embodiment, the flexible membrane has a bending strain of no less than 0.1%. In one embodiment, the flexible membrane has a lithium-ion conductivity of no less than 0.5 mS/cm. The bending strain is calculated according to the formula ?M=h/(2r), wherein h is thickness of the membrane and r is a bending radius corresponding to the membrane without any observable kinks, wrinkles, cracks, or damages.

Abstract: A solid electrolyte material of the present disclosure includes: Li; M; O; X; and S. The M is at least one selected from the group consisting of Ti, Zr, and Hf. The X is at least one selected from the group consisting of F, Cl, Br, and I. A molar ratio of the O to the X is more than 0 and 0.3 or less. A battery of the present disclosure includes: a positive electrode; a negative electrode; and an electrolyte layer provided between the positive electrode and the negative electrode. At least one selected from the group consisting of the positive electrode, the negative electrode, and the electrolyte layer includes the solid electrolyte material of the present disclosure.

Abstract: A lithium-ion electrochemical cell comprising: a negative electrode comprising an active material selected from the group consisting of carbon, silicon and a carbon-silicon composite; a positive electrode; a gel-type electrolyte comprising a matrix which is a polymer resulting from the cross-linking of a monomer comprising at least two acrylate groups, in which matrix there is embedded a liquid mixture comprising at least one solvent, lithium hexafluorophosphate (LiPF6), at least one of lithium bis(fluorosulfonyl)imide (LiFSI) and lithium bis(trifluoromethanesulfonyl)imide (LiTFSI), lithium difluoro(oxalato)borate (LiDFOB) and a thermal initiator of radical polymerization.

Abstract: An electrolyte containing a DOPO-based molecule; an aprotic organic solvent; and a metal salt and an electrochemical energy storage device containing the electrolyte is disclosed.

Abstract: An electrolyte containing functionalized crown ethers suitable for use in electrochemical energy storage devices useful for reducing battery resistance, increasing cycle life, and improving high-temperature performance is disclosed.