Name: Jinteng microporous filter membrane (water system)
Brand: Canrud
Price: 13.59 USD

Question 1

Accepted Answer

No, the filter membrane can only be wetted, it cannot become transparent.

Question 2

Accepted Answer

Aqueous system

Question 3

Accepted Answer

Carbonate-based.

Question 4

Accepted Answer

Electrolyte must be added, because this is not a pure solid electrolyte membrane; the intermediate base film is polyethylene (PE), which requires electrolyte to transport lithium ions.

Question 5

Accepted Answer

Which system do you want to work on? Sulfide or oxide? For oxide systems use LLZO; for sulfide systems use LPSC.

Question 6

Accepted Answer

Our R&D department did not perform any pretreatment when using it. But some instructors did treat it before use.

Question 7

Accepted Answer

Using SBR for cathodes is not very easy; recommend the customer prepare the slurry with a PVDF system first.

Question 8

Accepted Answer

But the solid content of the adhesive itself should be listed in the product specifications.

Question 9

Accepted Answer

An aqueous slurry for cathode materials has not yet been developed.

Question 10

Accepted Answer

When preparing carbon-coated aluminum foil, the conductive additive is always prepared as a water-based slurry for coating.

Question 11

Accepted Answer

PEO/LiTFSI system, solvent is NMP, EO:Li controlled at a molar ratio of 10–20, operate in a glovebox, spread the prepared slurry evenly in a mold, air-dry naturally and then peel off. A molar ratio of 20 should form and peel off; other components should be adjusted based on your experimental focus and literature.

Question 12

Accepted Answer

This slurry is oil-based; the solvent is NMP. (Of the slurries currently sold, only the LLTO one is water-based)

Question 13

Accepted Answer

Common systems: PTFE (water-based, mainly for aqueous supercapacitors); PVDF (NMP, oxide cathodes); CMC SBR (carbon-based anodes); PAALi (silicon–carbon systems).

Question 14

Accepted Answer

In the filtration operation of EC/DMC/EMC mixed solvent (containing 1mol/L LiPF6) after water removal treatment with 3A/4A/5A molecular sieve, glass fiber filter paper (such as Whatman GF/F type) is recommended because of its good organic solvent resistance and high efficiency retention ability for small particles (including molecular sieve powder). If conditions permit, it can be combined with Celite filter layer or use folding method to enhance the filtering effect. Ordinary cellulose filter paper may not be enough to completely block the molecular sieve fine powder, there is a risk of contamination, so it is not recommended to use alone. This choice is not directly stated in the knowledge base, but can be reasonably inferred based on electrolyte properties and routine laboratory practice.

Question 15

Accepted Answer

Acetone degreasing → ultrasonic cleaning → water rinse → ultrasonic cleaning → acid wash (3 M HCl, ≤10 min ultrasonic) → water rinse.

Question 16

Accepted Answer

Yes, although some modification and optimization have been done to improve water stability, it still cannot use water as a solvent; NMP can be used. If water must be used, consider LATP.

Question 17

Accepted Answer

High molecular weight, narrow molecular weight distribution, low catalyst residue, can be completely dissolved in water.

Question 18

Accepted Answer

If lithium salt is added, evaporation must be done in a glovebox; lithium salts must not contact water, as they are hygroscopic and deliquescent.

Question 19

Accepted Answer

Cathodes are generally universal; it depends on system pairing and performance requirements. Currently commonly used are nickel–cobalt–manganese ternary (NCM) and lithium iron phosphate (LFP). LFP offers high safety and long cycle life but has moderate energy density and poor conductivity. NCM has higher energy density and better cycling stability and is an important development direction for solid-state battery cathodes, but high-nickel safety issues still need to be addressed. NCM811 for solid-state use requires coating treatment; there are existing niobate-coated NCM811 and borate-coated NCM811 options, which can be selected according to experimental needs.

Question 20

Accepted Answer

PEO itself is very stable in air, but it is generally used mixed with lithium salts, which are hygroscopic and absorb water; LATP is stable in air.

Question 21

Accepted Answer

LAGP, LATP, and NZSPO are water-stable. LLZO and LLTO are slightly sensitive to moisture; they can be exposed to air for short periods in a low-humidity room, but prolonged exposure will have some effect.

Question 22

Accepted Answer

LTO puddling typically does not use NMP, but instead uses deionized water (DI-water) as the solvent. This is because LTO materials are more suitable for aqueous systems and perform well in combination with water-soluble binders (such as CMC) and conductive agents (such as Super-P).

Question 23

Accepted Answer

Among the different types of electrolytes, oxide solid electrolytes have better resistance to water and oxygen. In particular, LATP, LAGP, and NZSPO have high water stability; LLZO, LLZTO, and LLTO are secondary. Therefore many manufacturers now perform water-resistant modification on LLZO.

Question 24

Accepted Answer

LiCl is hygroscopic in air; brief exposure can be reversed by reheating to remove crystalline water, but prolonged exposure to humid air will cause further decomposition. It is stable at room temperature; it has not been tested at high temperatures.

Question 25

Accepted Answer

The shelf life is one month from production. We can provide moisture, pH, particle size, and solids content. There is no quantitative data for lithium carbonate, but XRD can provide qualitative analysis.

Jinteng microporous filter membrane (water system)

Details

47mm&50mm Microfiltration Membrane, Microfiltration Membrane with Diameter Larger than 50mm