Name: Alumina Ceramic Thermal Insulation Plug
Brand: Canrud
Price: 7.85 USD

Question 1

Accepted Answer

Use fiberglass/regular PE film/alumina ceramic separator, or for all-solid-state use NZSPO.

Question 2

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 3

Accepted Answer

This separator is composed of a PE base film, an alumina coating, and a LATP oxide electrolyte coating, and does not contain any lithium salts.

Question 4

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 5

Accepted Answer

When electrolyte pellets are prepared by cold pressing, the size cannot be controlled to be identical for every pellet; generally they vary within a range. Achieving very high dimensional precision for each pellet is not possible because thermal shrinkage under the same process also differs, unless hot pressing and sintering are used.

Question 6

Accepted Answer

It is not a polymer. It is a sintered ceramic oxide and can be used directly.

Question 7

Accepted Answer

Yes

Question 8

Accepted Answer

None

Question 9

Accepted Answer

Among the products currently listed, there is no pure tantalum-doped LLZTO; only LLZTO ceramic sheets are available.

Question 10

Accepted Answer

The separators inside dry battery cells are ceramic-coated separators; baking at 85°C is fine.

Question 11

Accepted Answer

They cannot be baked that high; there is still concern about separator shrinkage

Question 12

Accepted Answer

It’s best not to use graphite crucibles or graphite-lined furnaces. During the sintering of lithium-ion solid electrolyte pellets, lithium volatilization occurs; the exact species are unclear, and the volatiles can affect the furnace. The same applies to crucibles—the lithium volatiles can reduce crucible lifespan. Graphite crucibles may also contaminate the material, and atmosphere control during sintering would need to be more stringent. Commonly used crucible materials are platinum, alumina, and magnesia.

Question 13

Accepted Answer

The test temperature depends on the battery test items required, but tests are generally conducted at room temperature.

Question 14

Accepted Answer

Separator coating process: after coating and drying, it is finished as a product.

Question 15

Accepted Answer

Oxide electrolyte ceramic sheets are cold-pressed and sintered, not simply molded by compacting powder; in addition, especially thin sheets or those with larger areas are prepared by tape casting.

Question 16

Accepted Answer

The presence of niobium has little effect on sintering; this one actually performs better. The final quality of the ceramic plate mainly depends on the sintering process.

Question 17

Accepted Answer

The oxide electrolyte powders we currently sell are LATP, LAGP, LLZO, LLTO, LALZO, LLZNTO, NZSPO, and LZSPO; the oxide ceramic sheets available are LATP, LAGP, LLZTO, and NZSPO. Standard thickness is 1 mm, diameters range from 10 to 15 mm, and custom specifications can be discussed with customer service.

Question 18

Accepted Answer

Conventional cathode and anode sheets and ceramic sheets form the battery, and there are contact interfaces that require adding a small amount of electrolyte to wet the interfaces. However, if the ceramic sheet surface is treated together with the cathode and anode material processes so that the electrode materials make better contact with the electrolyte sheet, electrolyte wetting of the interface is not necessary.

Question 19

Accepted Answer

Because the sintering temperature for ceramic plates reaches 1500–1600°C, they are generally used as inorganic fillers; I haven't done it myself so I'm not familiar. 2.8–4.3 V is acceptable.

Question 20

Accepted Answer

There is essentially no noticeable difference between the two; the main distinction is in self-discharge, but it is very small — the latter has about 0.005 mV/hour lower self-discharge.

Question 21

Accepted Answer

No SEM images; Na3Zr2Si2PO12 powder shows primary particles of 3–5 µm under the electron microscope, and a particle size analyzer measures 10–40 µm. Depending on the specific use: if used as filler in composite polymers there is no need to sinter, but if making oxide electrolyte pellets you need to press the green body and sinter it into ceramic pellets.

Question 22

Accepted Answer

This is not as-fired powder but powder that has already been sintered. To obtain ceramic sheets, pressing and sintering are still required; they cannot be used directly after pressing because oxide particle interfaces do not contact well and grain boundary impedance is high. Before sintering, mill the powder to increase its surface roughness and adsorption, which facilitates powder pressing.

Question 23

Accepted Answer

It depends on the sintering process—check whether the sintered ceramic discs are uniform and what their density is. The ceramic discs have a certain hardness, but under the pressure of mounting and electrical pressing they can still break relatively easily due to uneven force. You can also consider adding some additives during sintering to improve the mechanical properties of the electrolyte discs, such as lithium borate or PVA.

Alumina Ceramic Thermal Insulation Plug

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