Provided are binder particles for an all-solid-state battery with which an all-solid-state battery having excellent battery characteristics can be obtained even in a situation in which the all-solid-state battery is produced by a dry method. The binder particles for an all-solid-state battery are formed of a polymer and have a cohesion of not less than 1% and less than 30% and a volume-average particle diameter D50 of not less than 10 μm and not more than 100 μm. Moreover, a composition for an all-solid-state battery contains these binder particles for an all-solid-state battery and solid electrolyte particles. Furthermore, a functional layer for an all-solid-state battery is formed from this composition for an all-solid-state battery. Also, an all-solid-state battery includes this functional layer for an all-solid-state battery.

A solid-state battery that includes one or more battery constituent units each including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer interposed between the positive electrode layer and the negative electrode layer, in which the positive electrode layer and the negative electrode layer have a central portion and an outer edge portion surrounding the central portion in a plan view of the solid-state battery, and in at least one of the positive electrode layer and the negative electrode layer: 1.05≤(maximum value of film thickness of outer edge portion)/(average film thickness of central portion)<1.34 and (average film thickness of solid electrolyte layer)/(average film thickness of central portion)>0.35.

The present disclosure relates to a positive electrode slurry for a lithium-sulfur battery including a positive electrode active material, an electrically conductive material, a binder and a solvent, where the ratio of the average particle diameter (D.sub.50) of the positive electrode active material and the positive electrode slurry is 1.5 or less, and the phase angle at 1 Hz of the positive electrode slurry is 50° or more. The positive electrode slurry for the lithium-sulfur battery of the present disclosure exhibits excellent flowability even while having a high solid content, thereby making it possible to manufacture a positive electrode for a lithium-sulfur battery with excellent electrochemical properties and improving the productivity and economic feasibility of the manufacturing process of the positive electrode for the lithium-sulfur battery.

The present application relates to a battery module, which includes a first type of battery cells and a second type of battery cells electrically connected in series. The first type of battery cells and the second type of battery cells are battery cells with different chemical systems. The first type of battery cells includes N first battery cells, and the second type of battery cells includes M second battery cells, where N and M are greater than or equal one. The present application also relates to a battery pack and an electric apparatus including the battery module, and method and device for manufacturing the battery module.

A method for forming a treated sintered composition includes: providing a slurry precursor including a lithium-, sodium-, or magnesium-based compound; tape casting the slurry precursor to form a green tape; sintering the green tape at a temperature in a range of 500° C. to 1350° C. for a time in a range of less than 60 min to form a sintered composition; and heat treating the sintered composition at a temperature in a range of 700° C. to 1100° C. for a time in a range of 1 min to 2 hrs in an oxygen-containing atmosphere to form the treated sintered composition.

A silicon-polymer composite anode having two or more different molecular weight (MW) versions of the same polymer, method of making the anode and electrochemical energy storage device containing the anode are disclosed.

There is provided a positive electrode for an alkaline secondary battery and an alkaline secondary battery having good output properties and cycle life. To that end, a positive electrode (10) for alkaline secondary battery is obtained by laminating a flexible metal substrate (11) having flexibility; a primer layer (12) having conductivity provided on one or both surfaces of the substrate (11); and a positive electrode composite material layer (13) provided on the primer layer (12) and containing a positive electrode active material, a binder resin, and a first conductive material.

The invention relates to a method for producing an electrochemical cell comprising at least one porous electrode (2′), the method comprising at least the following method steps: (a) providing an electrode composition in the form of a homogeneous mixture comprising (i) at least one particulate active material (3); (ii) at least one particulate binder (5); (iii) at least one particulate pore-forming agent (4); and (iv) optionally at least one conducting additive (6); (b) forming a mouldable mass from the electrode composition; (c) applying the electrode composition to at least one surface of a substrate (1) to obtain a compact electrode (2); (d) producing an electrochemical cell comprising at least one compact electrode (2) which comprises the electrode composition according to method step (a); and (e) heating the at least one compact electrode (2) to liquefy the at least one particulate pore-forming agent (4); and/or (f) bringing the compact electrode (2) into contact with at least one liquid electrolyte composition or at least one liquid constituent of an electrolyte composition for an electrochemical cell which is capable of at least partially dissolving the at least one particulate pore-forming agent (4) to obtain a porous electrode (2), wherein method steps (a), (b), (c), (d) and (e) are carried out substantially without solvents.

The present disclosure relates to a lithium-sulfur battery cathode. The lithium-sulfur battery cathode comprises a carbon nanotube sponge and a plurality of sulfur nanoparticles. Wherein the carbon nanotube sponge comprises a plurality of micropores. The plurality of sulfur nanoparticles are uniformly distributed in the plurality of micropores. The present disclosure also relates a method for making the lithium-sulfur battery cathode and a lithium-sulfur battery using the lithium-sulfur battery cathode.

A lithium secondary battery includes a cathode formed of a cathode active material including a lithium metal oxide particle having a concentration gradient, and a coating formed on the lithium metal oxide particle, the coating including aluminum, titanium and zirconium, an anode, and a separator interposed between the cathode and the anode. The cathode active material includes 2,000 ppm to 4,000 ppm of aluminum, 4,000 ppm to 9,000 ppm of titanium and 400 ppm to 700 ppm of zirconium, based on the total weight of the cathode active material. The performance of the secondary battery may be maintained under a high temperature condition.