Abstract: A method of manufacturing an electrode for an electrochemical cell includes providing an admixture including an electroactive material, a binder, and a solvent. The method further includes rolling the admixture to form a sheet and forming a multi-layer stack from the sheet. The method further includes forming an electrode film precursor by performing a plurality of sequential rollings, each including rolling the stack through a first gap. The plurality of sequential rollings includes first and second rollings. In the first rolling, the stack is in a first orientation. In the second rolling, the stack is in a second orientation different from the first orientation. The method further includes forming an electrode film by rolling the electrode film precursor through a second gap less than or equal to the first gap. The method further includes drying the electrode film to remove at least a portion of the solvent.

Abstract: The disclosed technology relates to electrical feedthroughs for thin battery cells. A battery cell enclosure includes a terraced portion having a reduced thickness relative to another portion of the enclosure. The enclosure includes an opening disposed on a horizontal surface of the terraced portion for receiving the electrical feedthrough. Because the feedthrough is disposed on the horizontal surface of the terraced portion, the feedthrough may be over-sized thereby reducing the resistance and impedance of the feedthrough without increasing the height or thickness of the enclosure.

Abstract: A catalyst structure includes: (1) a substrate; (2) a catalyst layer on the substrate; and (3) an adhesion layer disposed between the substrate and the catalyst layer. In some implementations, an average thickness of the adhesion layer is about 1 nm or less. In some implementations, a material of the catalyst layer at least partially extends into a region of the adhesion layer. In some implementations, the catalyst layer is characterized by a lattice strain imparted by the adhesion layer.

Abstract: A method for a redox flow battery may include, interrupting cycling of the redox flow battery, including charging the redox flow battery to a threshold charge condition, draining positive and negative electrolyte from the redox flow battery, circulating a wash solution through the redox flow battery, and returning the positive and negative electrolyte to the redox flow battery, and resuming cycling of the redox flow battery. In this way, contamination of the redox flow battery system can be reduced, thereby prolonging the life and increasing performance of the redox flow battery system.

Abstract: Disclosed are battery cooling apparatus for electric vehicle, method of manufacturing, and an insulator structure for the apparatus including an insulator having a side wall of the insulator define an upper open part, a tube inserted into the upper open part of the insulator, and a gap filler disposed in a space between an upper surface of the tube and the battery cell, wherein the side wall comprises an inner inclined surface inclined inward and a tube accommodation part formed in an inner surface of the side wall to accommodate an outer part of the tube, and a gap filler application space is formed between the battery cell and the tube, when the tube is inserted between the tube accommodation part of the insulator and an inner bottom surface of the insulator, and a top of the side wall being located higher than the upper surface of the tube.

Abstract: Provided herein are apparatuses and methods of useful for managing pressure in electrochemical devices. The methods and systems use inputs and combinations of inputs to predictively pressurize or depressurize a battery. The methods minimize energy losses from excessive battery pressure when the battery is not in use.

Abstract: An object of the present invention is to provide a membrane for a redox flow battery which is prevented from being curled and exhibits high power efficiency, a membrane electrode assembly for a redox flow battery, a cell for a redox flow battery, and a redox flow battery. The object can be attained by a membrane for a redox flow battery, comprising a first ion-exchange resin layer, an anion-exchange resin layer containing an anion-exchange compound, and a second ion-exchange resin layer in the presented order, wherein a value obtained by dividing a thickness of the first ion-exchange resin layer by a thickness of the second ion-exchange resin layer is 0.7 or more and 1.3 or less, and a thickness of the anion-exchange resin layer is 0.02 ?m or larger and 3 ?m or smaller.

Abstract: A method of making a fuel cell stack includes applying an electrically conductive, compliant contact print ink containing an electrically conductive material, a plasticizer, a solvent, and a binder to at least one of a surface of an electrode of a fuel cell or a surface of an interconnect, and placing the fuel cell and the interconnect in the fuel cell stack such that the compliant contact print ink is located between the electrode of the fuel cell and the interconnect.

Abstract: Provided is a battery module and battery rack having enhanced fire safety features. The battery module includes a swelling/pressure sensor that detects swelling of a battery cell. An output signal of the sensor is used to halt operation of a battery rack/battery system containing the battery module and prevent charging and discharging of the battery module. In an embodiment, the battery module uses an AC-to-AC power supply to provide AC frequency power for balancing battery cells of the battery module. In an embodiment, the battery rack includes an internal water fire suppression system that provides battery cooling in the event of a battery cell fire to prevent the spread and/or reigniting of the fire.

Abstract: This anode catalyst layer for a fuel cell contains electrode catalyst particles, a carbon carrier on which the electrode catalyst particles are loaded, water electrolysis catalyst particles, a proton-conducting binder, and graphitized carbon. At least part of the carbon carrier has a crystallite size La of 3.0 nm or more.

Abstract: Described herein are novel alumina substrate-supported thin film SOFCs that may be produced at significantly reduced cost while providing improved robustness, high electrochemical performance, and the capability of effective carbon deposition resistance while still using Ni-cermet as an anode functional layer.

Abstract: The present invention relates to a solid-state battery that is based on a phthalocyanine solid-state electrolyte/anode connection that is chemically obtained. Such chemical connection process yields a solid electrolyte interphase that connects the solid-state battery's phthalocyanine solid-state electrolyte and anode. Unlike other processes for forming solid-state electrolyte/anode connections, the present chemical process does not require that solid-state electrolyte be ductile and flow under high pressure.

Abstract: A maturation process for an electric battery cell comprises charging the electric battery cell, subjecting the electric battery cell to a maturation period of at least one day while no electrical load other than a measurement apparatus is connected to the electric battery cell, and taking at least one measurement of the open circuit voltage of the electric battery cell during the maturation period using the measurement apparatus. The measurement apparatus is incorporated into a structure of the electric battery cell, forming an integral part of the electric battery cell. The maturation process further comprises determining whether electric battery cell is defective in dependence on the at least one measurement.

Abstract: The present subject matter pertains to PolyMET plate for a Proton Exchange Membrane fuel cell where the PolyMET plate includes a body made of a polymeric material and comprise a first surface and a second surface opposite to the first surface. Furthermore, the PolyMET plate includes a plurality of in-plane conductive pathways on the first surface defining a reaction area on the first surface, where the plurality of in-plane conductive pathways is formed as a coating of conductive material on the first surface. Moreover, the PolyMET plate also includes a through-plane conductive pathway formed of a solid conductive material extending between the first surface and second surface, such that the through-plane conductive pathway is electrically coupled to the in-plane conductive pathways.

Abstract: The present disclosure relates to a method of making core-shell and yolk-shell nanoparticles, and to electrodes comprising the same. The core-shell and yolk-shell nanoparticles and electrodes comprising them are suitable for use in electrochemical cells, such as fluoride shuttle batteries. The shell may protect the metal core from oxidation, including in an electrochemical cell. In some embodiments, an electrochemically active structure includes a dimensionally changeable active material forming a particle that expands or contracts upon reaction with or release of fluoride ions. One or more particles are at least partially surrounded with a fluoride-conducting encapsulant and optionally one or more voids are formed between the active material and the encapsulant using sacrificial layers or selective etching. When the electrochemically active structures are used in secondary batteries, the presence of voids can accommodate dimensional changes of the active material.

Abstract: The present disclosure relates to a phosphorus additive that is useful for stable cycling and storage of lithium ion cells at high temperatures, an electrolyte containing the phosphorus additive, and an electrochemical energy storage device containing the electrolyte.

Abstract: A polymer electrolyte membrane includes an ion-conducting polymeric electrolyte material and platelets, distributed through the polymeric electrolyte material. The platelets have an aspect ratio of length to thickness of at least 2:1. The platelets are aligned generally parallel to a length of the membrane. The platelets can be functionalized with free radical scavengers, or other moieties, to extend the lifetime of the membrane or of a membrane electrode assembly incorporating the membrane.

Abstract: To provide a lithium secondary battery capable of suppressing short circuits and having high energy density and high output. An electrolyte medium for a lithium secondary battery includes a low dielectric constant solvent, a lithium salt, and a polyvalent cation salt. The polyvalent cation salt is dispersed as particles in the electrolyte medium and can flow without being immobilized. The electrolyte medium includes 20 mass % or less of a high dielectric constant solvent. A lithium secondary battery including the electrolyte medium for a lithium secondary battery can suppress short circuits and provide high energy density and high output.

Abstract: A wireless battery management system, a manager node for the same, and a channel operating method, which operate a channel so as to stably support wireless communication in the wireless battery management system, are provided. The wireless battery management system includes a manager node and a monitor node. The manager node establishes a first network being a short-range wireless network by using at least one of a first channel and a second channel, and when a second network using the same communication channel and modulation method as a communication channel and a modulation method of the first network is detected, changing the first channel to a third channel and changing the second channel to a fourth channel.

Abstract: The present invention relates to an apparatus and a method for manufacturing a lithium electrode, comprising a cutting stage, a laser irradiation portion and a lithium metal film supply portion, in which a plurality of adsorption holes and a plurality of unit electrode pattern grooves are formed on the upper surface of the cutting stage.