Name: Glass fiber filter membrane
Brand: Canrud
Price: 6.46 USD

Question 1

Accepted Answer

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

Question 2

Accepted Answer

Yes

Question 3

Accepted Answer

For sodium batteries, separators generally use glass fiber separators GF-D, or you can directly use lithium battery separators.

Question 4

Accepted Answer

For sodium batteries, it is recommended to use glass fiber / regular thick PE / alumina ceramic separators, or for all-solid-state use NZSPO ceramic sheets.

Question 5

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 6

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 7

Accepted Answer

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

Question 8

Accepted Answer

Two common methods: 1) drop coating followed by drying, repeated in cycles; 2) roll the slurry into a film on glass, then press it onto the nickel foam.

Question 9

Accepted Answer

VGCF is the abbreviation of Vapor Grown Carbon Fiber, which is a high-purity (≥ 99%) carbon material in black powder, with an average diameter of 150 nm and an average length of 10 μm. It is usually used as a conductive additive in the electrode of lithium ion battery, which can effectively construct a three-dimensional conductive network and improve the conductivity and electrochemical performance of the electrode.

Question 10

Accepted Answer

Must be cut in a glove box. After cutting, it should be rolled using a PTFE or glass rod. For potassium batteries, the metal is often rolled into thin sheets after forming small spheres. Rolling can be done directly on spacers, which then serve as carriers during coin cell assembly.

Question 11

Accepted Answer

There is a layer of oxide film on the surface of lithium foil that is adhesive, so when lithium foils come into contact they will adhere to each other. Lithium foil is particularly sensitive to the atmosphere and should be stored in blue-capped glass bottles; before aliquoting it is necessary to vacuum-bake the glass bottles overnight and then place them in the glovebox for one day before subdividing.

Glass fiber filter membrane

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