A composition comprises: an at least partially hydrolysed polyvinyl acetate component having an hydrolysation degree of at least 5%; a polyalkylene glycol component having a number average molecular mass Mn lower than 9000 g/mol and consisting of one or more substances selected from the group consisting of polyethylene glycol, polypropylene glycol, copolymers of ethylene glycol and propylene glycol, and their derivatives; a positive or negative electrode active component; and a conductive component; wherein the mass ratio between the at least partially hydrolysed polyvinyl acetate component and the positive or negative electrode active component equals at least 0.12 and at most 0.30, and wherein the mass ratio between the polyalkylene glycol component and the positive or negative electrode active component equals at least 0.012 and at most 0.10.

A method of manufacturing a formed body for an electrode includes: preparing an electrode material; placing a shape retaining member having an rectangular tubular shape with one opening portion L thereof facing down, and supplying the electrode material into the shape retaining member from the other opening portion M thereof; and discharging the electrode material onto a support from the opening portion L while relatively moving the opening portion L and the support, to form a film, a bulk density D.sub.1 of the electrode material in the first step and a bulk density D.sub.2 of the electrode material at the opening portion L satisfying a relationship of D.sub.2/D.sub.1=1.1 to 30, and a width T.sub.1 of the opening portion L in a short side direction and a distance T.sub.2 between the end portion X of the opening portion L and the support satisfying a relationship of width T.sub.1>distance T.sub.2.

Lithium metal electrodes, modular lithium deposition systems, and associated articles and methods are generally described.

An electrode and a method of manufacturing the electrode are provided. The electrode includes an electrode current collector and an electrode active material layer on at least one surface of the electrode current collector. The electrode active material layer has a thickness of 200 μm or more, and when the electrode active material layer is divided into three portions of a surface layer portion, a middle layer portion, and a lower layer portion in a thickness direction, a difference in porosity between the surface layer portion and the lower layer portion by XRM analysis is 10% or less.

Embodiments described herein relate generally to systems and methods for continuously and/or semi-continuously manufacturing semi-solid electrodes and batteries incorporating semi-solid electrodes. In some embodiments, the process of manufacturing a semi-solid electrode includes continuously dispensing a semi-solid electrode slurry onto a current collector, separating the semi-solid electrode slurry into discrete portions, and cutting the current collector to form a finished electrode.

Process for making a mixed oxide according to the formula Li.sub.1+xTM.sub.1−xO.sub.2 wherein x is in the range of from 0.1 to 0.2 and TM is a combination of elements according to general formula (I) (Ni.sub.aCo.sub.bMn.sub.c).sub.1-dM.sup.1.sub.d (I) wherein a is in the range of from 0.30 to 0.38, b being in the range of from zero to 0.05, c being in the range of from 0.60 to 0.70, and d being in the range of from zero to 0.05, M.sup.1 is selected from Al, Ti, Zr, W, Mo, Nb, Ta, Mg and combinations of at least two of the forego-ing, a+b+c=1, said process comprising the following steps: (a) providing a particulate hydroxide, oxide or oxyhydroxide of manganese, nickel, and, optionally, at least one of Co and M.sup.1, (b) adding a source of lithium, (c) calcining the mixture obtained from step (b) thermally under an atmosphere comprising 0.05 to 5 vol.-% of oxygen at a maximum temperature the range of from 650 to 1000° C.

The first coating material adheres to the surface of the substrate to form a first layer. A first pressing force is applied to the first layer to compress the first layer. The second coating material adheres to the surface of the first layer after compression, thereby forming the second layer. A second pressing force is applied to the second layer to compress the second layer. An active material layer including a first layer and a second layer is formed. The second coating material is dry. The first coating material and the second coating material each independently include an active material and a binder.

An electrode manufacturing apparatus includes a shaping roll and an opposed roll that sandwich an electrode therebetween and rotate in opposite directions, and a temperature adjusting unit. The temperature adjusting unit reduces a temperature difference between a central portion and an end portion in an axial direction, of at least one roll of the shaping roll and the opposed roll.

A composite electrode. The composite electrode including an active material, a conductive additive, a binder, and a solvent. The composite electrode may be cast or printed.

A secondary battery electrode mixture, a secondary battery electrode mixture sheet containing the electrode mixture, and a secondary battery including the secondary battery electrode mixture sheet. Also provided is a method for producing an electrode mixture sheet containing a polytetrafluoroethylene resin having a fine fiber structure. The secondary battery electrode mixture includes an electrode active material and a binder. The binder is a polytetrafluoroethylene resin, and the polytetrafluoroethylene resin has a fibrous structure with a fibril diameter (median value) of 70 nm or less. In addition, the secondary battery electrode mixture sheet contains the electrode mixture.