The present invention is directed to electrodepositable compositions comprising: (a) an aqueous medium; (b) an ionic resin; and (c) solid particles comprising: (i) lithium-containing particles, and (ii) electrically conductive particles, wherein the composition has a weight ratio of the solid particles to the ionic resin of at least 17:1, and wherein the weight ratio of the lithium-containing particles to the electrically conductive particles is at least 3:1. The present invention is additionally directed to a battery electrode comprising a substrate and a coating applied to a surface of the substrate. The coating is deposited from the electrodepositable composition described above.

A method for recycling a lithium iron phosphate positive plate with low energy consumption and low Al content, including: crushing a lithium iron phosphate positive plate to be recycled into a granular material with a particle size of 1-15 mm by using a crusher; heating the granular material obtained in step (1) to 350-500° C. in an atmosphere furnace in an inert atmosphere; and keeping the granular material at 350-500° C. for 0.5-2 h followed by cooling to a preset temperature to obtain a calcined product; grinding the calcined product obtained in step (2) by using a grinder to obtain a ground product with D50 larger than or equal to 50 μm; and classifying the ground product obtained in step (3) by using an air classifier to remove Al simple substance to obtain a recovered positive material with an Al content below 200 ppm.

A metallic salt including at least one anion having a heterocyclic aromatic structure represented by one of Formulae 1 to 3; and a metallic cation: ##STR00001##
wherein, in Formulae 1 to 3, each X is independently N, P, or As, one of A.sub.1 and A.sub.2 is an electron-donating group, and the other one is an electron-withdrawing group, ring Ar.sub.1 and ring Ar.sub.2 are as defined herein, L is a linker group as defined herein, m is an integer from 1 to 5, and n is an integer from 0 to 5.

A metallic salt including at least one anion having a heterocyclic aromatic structure represented by one of Formulae 1 to 3; and a metallic cation: ##STR00001##
wherein, in Formulae 1 to 3, each X is independently N, P, or As, one of A.sub.1 and A.sub.2 is an electron-donating group, and the other one is an electron-withdrawing group, ring Ar.sub.1 and ring Ar.sub.2 are as defined herein, L is a linker group as defined herein, m is an integer from 1 to 5, and n is an integer from 0 to 5.

A positive electrode active material for a non-aqueous electrolyte secondary battery includes LiX, where X represents a halogen atom.

A carbon-coated cathode material and a preparation method thereof. The carbon-coated cathode material includes a lithium metal phosphate particle and a carbon coating layer. The carbon coating layer is coated on the lithium metal phosphate particle. The carbon coating layer is formed by a first heat treatment and a second heat treatment. A first carbon source is added in the first heat treatment, and a second carbon source is added in the second heat treatment. The first carbon source has a first weight percentage relative to the lithium metal phosphate particle. The second carbon source has a second weight percentage relative to the lithium metal phosphate particle. The first weight percentage of the first carbon source is equal to or less than the second weight percentage of the second carbon source.

The present disclosure relates to a method for manufacturing a positive electrode for a lithium-sulfur battery including: (1) mixing a sulfur-carbon composite and a binder to prepare a slurry for a positive electrode active material; (2) applying the slurry for the positive electrode active material to one surface of the current collector; (3) a first drying step of drying the current collector, to which the slurry is applied, using hot air and medium wave infrared radiation; and (4) a second drying step of drying the current collector, to which the slurry is applied, using a laser heat source after the first drying step (3).

A positive electrode slurry composition includes a positive electrode active material, a binder, a dispersant, and a solvent, wherein the positive electrode active material includes lithium iron phosphate including a carbon coating layer on the surface thereof, and the binder includes polyvinylidene fluoride satisfying the following Expression 1

0≤{(2A+B)/(C+D)}×100<0.2  [Expression 1] wherein A, B, C, and D are the integrated areas of respective peaks exhibited at 11.5 ppm to 12.8 ppm, 3.9 ppm to 4.2 ppm, 2.6 ppm to 3.2 ppm, and 2.1 ppm to 2.35 ppm as measured by .sup.1H-NMR of the polyvinylidene fluoride.

A positive electrode slurry composition includes a positive electrode active material, a conductive material, a binder, a dispersant, and a solvent, wherein the positive electrode active material includes lithium iron phosphate, the lithium iron phosphate has an average particle diameter D.sub.50 of 1.5 μm or more, and the dispersant is included in an amount of 0.2 parts by weight to 0.9 parts by weight with respect to 100 parts by weight of solids in the positive electrode slurry composition.

A positive electrode slurry composition includes a positive electrode active material, a dispersant, a conductive material, a binder, and a solvent, wherein the positive electrode active material includes lithium iron phosphate, and the dispersant has a weight-average molecular weight of 10,000 g/mol to 150,000 g/mol.