Particular embodiments described herein provide for an electrode for a battery. The electrode including a current collector frame and an electrode substrate coupled to the current collector frame. An electrically conductive adhesive layer can be between the current collector frame and the electrode substrate and the electrically conductive adhesive layer can include a polymer binder and a conductive filler. The electrode substrate includes a porous material and active electrode material within the porous material. The porous material is copper foam, nickel foam, stainless steel foam, titanium foam, carbon felt, carbon cloth, or a carbon paper conductive polymer. The active electrode material includes one or more of manganese oxide, nickel oxide, vanadium oxide, titanium oxide, iron oxide, zinc metal, lead oxide, or lead.

This disclosure relates to compositions and methods for improving the performance of batteries, such as lead-acid batteries, including reviving or rejuvenating a partially or totally dead battery, by adding an amount of nonionic, ground state metal nanoparticles to the electrolyte of the battery, and optionally recharging the battery by applying a voltage. The metal nanoparticles may be gold and coral-shaped and are added to provide a concentration within the electrolyte of 100 ppb to 2 ppm or more (e.g., up to 5 ppm, 10 ppm, 25 ppm, 50 ppm, or 100 ppm). The metal nanoparticles may be added to battery electrode paste applied to the electrodes to enhance newly manufactured or remanufactured batteries.

An anode for a lithium-based energy storage device such as a lithium-ion battery is disclosed. The anode includes an electrically conductive current collector comprising an electrically conductive layer and a transition metal oxide layer overlaying the electrically conductive layer. The anode may include a continuous porous lithium storage layer provided over the transition metal oxide layer. The continuous porous lithium storage layer may include at least 80 atomic % amorphous silicon and a silicide-forming metallic element in a range of 0.1 to 10 atomic %. A method of making the anode may include providing an electrically conductive current collector having an electrically conductive layer and a transition metal oxide layer provided over the electrically conductive layer. The transition metal oxide layer may have an average thickness of at least 0.05 μm. A continuous porous lithium storage layer is deposited over the transition metal oxide layer by PECVD.

An anode containing a multi-composite conductive agent and a lithium secondary battery including the anode are proposed. The anode may include an anode active material containing a carbon-based material and a metal-based compound, a binder, and a multi-composite conductive agent containing a carbon-based conductive agent and a metal-based conductive agent having different physical properties and shapes. According to some embodiments, the anode can increase energy density and also improve electrical conductivity and electron mobility.

Systems and methods for pulverization mitigation additives for silicon dominant anodes may include an electrode including a metal current collector and an active material layer on the current collector. The active material layer may include islands of material separated by cracks, where the islands may include silicon, pyrolyzed binder, and conductive additives. At least a portion of the additives bridge the cracks of the active material layer and the additives may include between 1% and 40% of the active material layer. The active material layer may include between 20% to 95% silicon. The conductive additives may include carbon nanotubes and/or graphene sheets. The conductive additives may include metal, such as one or more of: gallium, indium, copper, aluminum, lead, tin, and nickel. The metal may include a transition metal, and/or one or more semiconductors. The conductive additives may include long narrow filaments with an aspect ratio of 20 or greater.

The present invention pertains to an electrode-forming composition comprising: (a) at least one fluoropolymer [polymer (F)]; (b) particles of at least one active electrode material [particles (P)], said particles (P) comprising: —a core comprising at least one active electrode compound [compound (NMC)] of formula (I): Li[Li.sub.x(A.sub.pB.sub.QC.sub.w).sub.1-x]O.sub.2 (I) wherein A, B and C, different from each other, are selected from the group consisting of Fe, Ni, Mn and Co, x is comprised between 0 and 0.3, P is comprised between 0.2 and 0.8, preferably between 0.2 and 0.5, more preferably between 0.2 and 0.4, Q is comprised between 0.1 and 0.4, and W is comprised between 0.1 and 0.4, and —an outer layer consisting of a metal compound [compound (M)] different from Lithium, said outer layer at least partially surrounding said core; and (c) a liquid medium [medium (L)]. The present invention also pertains to a process for manufacturing said electrode-forming composition, to the use of said electrode-forming composition in a process for manufacturing a positive electrode and to the positive electrode obtainable therefrom.

The present disclosure relates to a positive electrode for a lithium secondary battery and a lithium secondary battery including the same, wherein the positive electrode for a lithium secondary battery sequentially includes a first coating layer and a second coating layer on a current collector, and by introducing a patterned layer in a form in which the conductive material is dispersed in the binder between the first coating layer and the second coating layer at a specific area ratio, the safety of the battery is improved, and therefore, when a metal body penetrates the electrode from the outside, not only heat generation due to an overcurrent, ignition, and the like may not occur, but also the adhesive force between layers constituting the positive electrode may be improved, so that the life characteristics of the batteries may be improved.

An electrode for a lithium secondary battery, which may be applied to the lithium secondary battery to increase cycling performance and efficiency of the battery, and a manufacturing method thereof. When the electrode for the lithium secondary battery of the present invention is applied to the lithium secondary battery, uniform deposition and stripping of lithium metals occur throughout the surface of the electrode when charging/discharging the battery, thereby inhibiting uneven growth of lithium dendrites and improving cycle and efficiency characteristics of the battery. Further, the electrode for the lithium secondary battery of the present invention exhibits remarkably high flexibility, as compared with existing electrodes including a metal current collector and an active material layer, thereby improving processability during manufacture of the electrode and assembling the battery.

A positive electrode for a lithium ion secondary battery that includes a positive electrode combination material having a positive electrode active material that produces a potential of 4.5 V or higher on the basis of metal lithium; a conduction aid; and a binder. The binder contains an aqueous binder as its main constituent, and the sum SE of the surface area SA of the positive electrode active material in the positive electrode combination material and the surface area SC of the conduction aid therein is 90 to 400 cm.sup.2/cm.sup.2 per unit coated area of the positive electrode combination material.

A method and system for copper coated anode active material may include providing a metal current collector; an active material layer on the current collector, the active material layer comprising at least 50% silicon by weight, a pyrolyzed carbon source; and a layer of metal on the active material layer that increases conductivity of the layer. The surface may be opposite to a surface of the active material layer that is coupled to the current collector. The layer of metal may comprise copper. The silicon may comprise particles ranging in size from 2 to 50 μm. The metal layer may comprise islands of metal on the silicon particles. The islands of metal may have a thickness of 100 nm or less. The islands of metal may be less than 50 μm across. A conductivity of the anode active material layer and layer of metal may be less than 2×10.sup.−5 Ω-cm.