US2018076446A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2018076446-A1 |
| Application number | US-201715689131-A |
| Country | US |
| Kind code | A1 |
| Filing date | Aug 29, 2017 |
| Priority date | Sep 13, 2016 |
| Publication date | Mar 15, 2018 |
| Grant date | — |
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A method is provided for producing a homogenous particulate material composition, including at least one particulate material M, at least one additive Z, and at least one binding agent B, the method including providing at least one particulate material M, at least one additive Z, and at least one binding agent B; producing a homogenous mixture G1 from the at least one particulate material M and the at least one additive Z in a gravity mixer; producing a mixture G2 from the mixture G1 and the at least one binding agent B, with the introduction of shear forces; and removing dispersed gases from the mixture G2.
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What is claimed is: 1 . A method for producing a homogenous particulate material composition, including at least one particulate material M, at least one additive Z, and at least one binding agent B, the method comprising: a) providing at least one particulate material M, at least one additive Z, and at least one binding agent B; b) producing a homogenous mixture G1 from the at least one particulate material M and the at least one additive Z in a gravity mixer; c) producing a mixture G2 from the mixture G1 and the at least one binding agent B, with the introduction of shear forces; and d) removing dispersed gases from the mixture G2. 2 . The method as recited in claim 1 , wherein a gravity mixer is used to obtain the homogenous mixture G1. 3 . The method as recited in claim 1 , wherein the mixture G2 includes a fibrillated binding agent B. 4 . The method as recited in claim 1 , wherein a jet mill is used to produce the mixture G2 in order to introduce shear forces necessary for the fibrillation of the binding agent B into the mixture. 5 . The method as recited in claim 1 , wherein the dispersed gases is removed from the mixture G2 in step d) under reduced pressure, in particular in a downdraft vaporizer. 6 . The method as recited in claim 1 , wherein the particulate material M is mixed, in method step b), with only a portion of the additive Z, a quantity of the additive Z being selected such that the additive Z occupies at most 50% of the surface of the particulate material M. 7 . The method as recited in claim 6 , wherein a remaining portion of the additive Z first being mixed, in a further method step b′), with at least a portion of the binding agent B in order to form a mixture G3 that subsequently replaces at least a portion of the pure binding agent B in the step c). 8 . An electrode active material produced by: a) providing at least one particulate material M, at least one additive Z, and at least one binding agent B; b) producing a homogenous mixture G1 from the at least one particulate material M and the at least one additive Z in a gravity mixer; c) producing a mixture G2 from the mixture G1 and the at least one binding agent B, with the introduction of shear forces; and d) removing dispersed gases from the mixture G2. 9 . A free-standing electrode active material foil produced using an electrode active material, the electrode active material produced by: a) providing at least one particulate material M, at least one additive Z, and at least one binding agent B; b) producing a homogenous mixture G1 from the at least one particulate material M and the at least one additive Z in a gravity mixer; c) producing a mixture G2 from the mixture G1 and the at least one binding agent B, with the introduction of shear forces; and d) removing dispersed gases from the mixture G2. 10 . The free-standing electrode active material foil as recited in claim 9 , wherein the free-standing electrode active material foil is used to produce an electrode for an electrochemical energy storage system, an electrolyzer, or a fuel cell.
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