Fluff separator suitable for the deposition type slurry battery

Abstract

The invention provides a fluff separator suitable for a deposition type slurry battery, which comprises a fluff layer arranged on both sides of the isolation layer, a fluff layer, a isolation layer and a fluff layer which are laminated and stacked in one body in sequence; The villi of villus layer always face to the outside, and the gap between two adjacent layers is no more than 10 [mu] m. Compared with the lithium ion battery separator in the prior art, the fluffy separator can effectively reduce the frictional resistance of the slurry in the chamber movement process, and can greatly reducethe abrasion of the separator caused by the slurry movement in the chamber, thereby greatly improving the service life and safety of the device; At the same time, compared with the prior art, the mechanical strength of the fluidized slurry is greatly improved, and the movement of the fluidized slurry in the chamber has good resistance to the extrusion deformation of the diaphragm; When the electrolyte is passed through the chamber, the plush diaphragm also has a self-cleaning effect, which can reduce the adhesion of particles in the active slurry on the plush layer and reduce the possibility of blockage.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a fluff diaphragm suitable for deposition type slurry batteries. Background technique [0002] Fluidized slurry battery is a new type of energy storage system that combines the advantages of flow batteries and traditional batteries. The active material used is solid particles, which are mixed with electrolysis to form a slurry. The form in the electrolyte is a suspension, Paste or form deposits. The fluidized slurry battery can realize the replacement of the active material, so the service life of the battery active material is not high. By allocating part of the equipment cost to the maintenance cost, the energy storage cost can be greatly reduced, which is a very ideal Large energy storage device. [0003] A lithium-ion battery diaphragm is disclosed in the prior art, and the non-woven diaphragm is provided with a zinc oxide nanowire layer on both sides, and the zinc oxide ...

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Problems solved by technology

[0003] A lithium-ion battery diaphragm is disclosed in the prior art, and the non-woven diaphragm is provided with a zinc oxide nanowire layer on both sides, and the zinc oxide nanowire layer is deposited on the non-woven film by thermal evaporation physical vapor deposition, and has a finger-like shape. Protruding small intestinal villi-like structure; its main purpose is to capture the active material released during the lithium-ion battery cycle, thereby reducing capacity fading; but it cannot be applied to fluidized slurry, if it is used in a fluidized slurry battery , there are obviously problems such as insufficient mechanical strength of the fluff and excessive frictional resistance.

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