A lithium battery includes a positive electrode, wherein the positive electrode includes a positive electrode sheet and a protective layer. The positive electrode sheet includes an active substance, a conductive additive, a binder, a current collector, or a combination thereof. The protective layer is disposed on the positive electrode sheet. A material of the protective layer is titanium nitride. A manufacturing method of a lithium battery is also provided.

Disclosed are an all-solid-state battery which is provided with an intermediate layer provided on an anode current collector and formed of an alloy including a metal configured to form an alloy with lithium, and a method for manufacturing the same. The all-solid-state battery includes the anode current collector, the intermediate layer located on the anode current collector, a solid electrolyte layer located on the intermediate layer, a cathode active material layer located on the solid electrolyte layer, and a cathode current collector located on the cathode active material layer, and the intermediate layer includes the alloy of a first metal configured to form an alloy with lithium and a second metal configured not to form an alloy with lithium.

Deterioration in cycle characteristics and battery swelling are improved. The lithium ion secondary battery of the present invention is characterized in comprising an electrolyte solution comprising a multifunctional monomer comprising two or more epoxy groups and a negative electrode comprising a binder comprising a polymer comprising a monomer unit comprising a functional group selected from the group consisting of —OH, —OM, —COOH, —COOM and —COOC.sub.nH.sub.2n+1, wherein M is a metal element, and n is an integer of 1 to 5.

A reference electrode assembly for an electrochemical cell includes a separator constructed from an electrically-insulating porous material. The reference electrode assembly also includes a current collector having a sputtered electrically-conducting porous layer arranged directly on the separator and a sputtered lithium iron phosphate (LFP) layer arranged directly on the electrically-conducting porous layer. The reference electrode assembly additionally includes an electrical contact connected to the current collector. A method using successive vacuum deposition of individual layers onto the separator is employed in fabricating the reference electrode assembly.

In some aspects, an electrode described herein can include a resin configured to create a rise in impedance, a film coupled to a first side of the resin via an adhesive, a first portion of an electrode material disposed on a second side of the resin, and a second portion of the electrode material disposed on the second side of the resin, wherein the first portion of the current collector material does not physically contact the second portion of the current collector material. In some embodiments, the electrode can further include a first portion of a current collector material disposed between the resin and the first portion of the electrode material and a second portion of the current collector material disposed between the resin and the second portion of the electrode material.

A method of making a multi-walled carbon nanotubes (MWCNTs) electrode is a deposition-based method for growing MWCNTs on copper (Cu) foils to make binder-free electrodes for energy storage devices, such as those used in batteries and supercapacitors. A chromium layer is sputter coated on a copper foil substrate, and a nickel catalyst layer is sputter coated on the chromium layer, such that the chromium layer forms an electrically conductive barrier layer between the nickel catalyst layer and the copper foil substrate. The multi-walled carbon nanotubes are then formed on the copper foil substrate using plasma enhanced chemical vapor deposition.

Embodiments of this invention include different configuration of lithium batteries that have a cathode made of a lithium containing material, an anode, and an electrolyte/separator between the cathode and anode. The thin anode includes an anode current collector and a nucleation layer on the anode current collector surface that can include one or more thin a semiconductor layers made of a porous, single crystalline, semiconductor, e.g., silicon. A thin semiconductor layer has a layer thickness between 50 nanometers (nm) to 20 micrometers (μm). Configurations of single layer arrays of batteries in variations of electrical series and parallel connections are disclosed along with stacking single and multiple layer arrays (stacks) to form energy storage devices. The energy storage devices are flexible and can store high levels of energy per volume and/or weight. The energy storage devices can be formed into different physical configurations including encased stacked layers (e.g., of battery stacks), curved surfaces, rolls, cylindrically shaped batteries/energy storage devices, etc. Methods of making thin anode structure, making battery banks, and assembling battery banks are disclosed.

The present disclosure relates to the technical field of energy storage, and in particular, relates to a positive electrode, a method for preparing the positive electrode and an electrochemical device. The positive electrode includes a current collector and a positive electrode active material layer that contains positive electrode active material and is arranged on at least one surface of the current collector. An inorganic layer having a thickness of 20 nm to 2000 nm is arranged on the surface of the at least one positive electrode active material layer away from the current collector. The inorganic layer is a porous dielectric layer containing no binder, and the inorganic layer has a porosity of 10%˜60%. The positive electrode active material layer according to the present disclosure significantly improves the cycle performance, high-temperature storage performance and safety of the electrochemical device.

This disclosure is directed toward a method for producing a solid-state battery layer structure. The method may include providing an anode layer comprising silicon, forming a plurality of nanowire structures including silicon and/or gallium nitride on the anode layer and depositing a solid electrolyte layer on the anode layer. In some examples, the method may also include depositing a cathode layer on the solid electrolyte layer, depositing a cathode current collector metal layer on the cathode layer, etching holes through the anode layer, filling the holes with an electrically conducting material; and depositing an anode current collector metal layer on a bottom surface of the anode layer.

There is provided an all-solid-state lithium battery including: a positive-electrode plate composed of a lithium complex oxide sintered body having a layered rock-salt structure; a solid electrolyte layer composed of a lithium-ion-conductive antiperovskite material; a negative-electrode plate containing Ti and permitting intercalation and deintercalation of lithium ions at 0.4 (vs. Li/Li.sup.+) V or more; a positive-electrode current collecting layer provided on a face, remote from the solid electrolyte layer, of the positive-electrode plate; a negative-electrode current collecting layer provided on a face, remote from the solid electrolyte layer, of the negative-electrode plate; a positive-electrode covering metal membrane provided at an interface between the positive-electrode plate and the solid electrolyte layer; and a negative-electrode covering metal membrane provided at an interface between the negative-electrode plate and the solid electrolyte layer.