A thin battery is produced on a surface is taught. A first electrode layer and a second electrode layer are provided on the surface. An electrolyte layer is printed on the first electrode layer and the second electrode layer. The electrolyte layer possesses substantial mechanical strength such that further printings on top of the electrolyte layer can be done. A photopolymerizable protection layer is printed on the electrolyte layer and around a perimeter of the electrolyte layer, wherein the photopolymerizable protection layer solidifies on exposure to suitable radiation. The electrolyte layer comprises at least one first functional group and the photopolymerizable protection layer comprise at least one second functional group such that on exposure to the suitable radiation some of the at least one first functional group makes chemical bonds with some of the at least one second functional group.

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 invention relates to a battery cell, in particular a lithium ion battery cell, having a cathode (3) comprising a cathode active material (333) and having an anode (1) comprising an anode active material (111), wherein the cathode active material (333) and/or the anode active material (111) is/are structured in such a way that between contiguous cathode active material regions (333a) and/or between contiguous anode active material regions (111a) there are hollow spaces (4) which spatially separate the contiguous cathode active material regions (333a) and/or the contiguous anode active material regions (111a) from one another and wherein the hollow spaces (4) are at least partly filled with an electrically insulating material (5).

A battery assembly is disclosed. The battery assembly can include a first electrode disposed in a first substrate section and a second electrode disposed in a second substrate section. The battery assembly can also include an adhesive that bonds the first substrate section to the second substrate section. The adhesive partially defines a chamber between the first and second electrodes. The battery assembly can also include an electrolyte disposed in the chamber between the first and second electrodes.

A device for intermittent coating of a substrate moving in a transport direction relative to the device includes a nozzle body comprising two nozzle jaws; an insertion film having a cut-out provided between the two nozzle jaws, wherein the cut-out in the insertion film forms a nozzle slot within the nozzle body, wherein the nozzle slot extends transversely to the transport direction of the substrate and in parallel with the substrate, and wherein the nozzle slot ends in an outlet gap; and a supply channel, wherein the outlet gap is in flow connection with the supply channel via the nozzle slot. A first of the two nozzle jaws is provided with at least two openings which lead into the nozzle slot in series between the supply channel and the outlet gap and which are closed in a fluid-tight manner toward the nozzle slot by at least two elastically deformable elements.

A photovoltaic power generation and storage (PPGS) device includes an electrically conductive substrate, a solar cell disposed on a first side of the substrate, the solar cell including an absorber layer disposed between an anode and a cathode, and a solid-state battery printed on an opposing second side of the substrate, the battery including an electrolyte layer disposed between an anode and a cathode. The method of forming the PPGS device includes forming a semiconductor material stack including a solar cell p-n junction on a first surface of a conductive web, and printing solid-state batteries on an opposing second surface of at least a portion of the conductive web.

A secondary battery includes a base material, an intermediate layer including a carbon material on the base material, and an active material layer on the intermediate layer. A secondary battery including an intermediate layer may improve adhesion between the base material and the active material layer, thereby reducing the risk of separation of the active material from the base material and improving the reliability and lifetime of the secondary battery.

The present disclosure is directed to electrochemical cells having injection molded or 3D printed components, such as cathodes, anodes, and/or electrolytes, and methods for making such electrochemical cells. The cathodes, anodes, and/or electrolytes can be formed from a binder resin and various conductive and active materials, mixtures of which are injected into a mold under heat and pressure to form the components of the electrochemical cells. The cathode can include conductive metallic powder, flakes, ribbons, fibers, wires, and/or nanotubes. Further, electrochemical arrays can be formed from multiple electrochemical cells having injection molded or 3D printed components.

A solid-state battery comprising a cathode, an anode and a solid electrolyte is provided. In one embodiment, the cathode, anode and/or solid electrolyte is formed from a printable lithium composition including lithium metal powder, a polymer binder compatible with the lithium metal powder, a rheology modifier compatible with the lithium metal powder, and a solvent compatible with the lithium metal powder and with the polymer binder. In another embodiment, lithium is deposited onto the solid electrolyte with a lithium printable lithium composition including lithium metal powder, a polymer binder compatible with the lithium metal powder, a rheology modifier compatible with the lithium metal powder, and a solvent compatible with the lithium metal powder and with the polymer binder.

A component for use in an energy storage device or an energy conversion device comprises a first part and a second part, wherein the first part comprises particles of a ceramic material, and the second part is provided by a sheet having a plurality of through-thickness apertures. The second part is at least partially embedded in the first part.