Name: Sodium Chip (Battery negative piece/Na Chip)
Brand: Canrud
Price: 301.74 USD

Question 1

Accepted Answer

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

Question 2

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Sulfide and halide electrolyte systems can use lithium-indium as the negative electrode, but oxide systems are more suitable for graphite and low-silicon negative electrodes.

Question 3

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KS-6 itself is a conductive agent and is generally not used as a negative electrode active material. If it were to be used as a negative electrode active material, it should not be necessary to add Super P.

Question 4

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Symmetric cells generally do not add electrolyte; if it is an all-solid-state cell, to test performance you can add a little.

Question 5

Question 6

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rest 4h, 0.2C DC to 0V, 0.1C DC to 0V, 0.01C DC to 0V, 10μA DC to 0V, rest 3 min, 0.1C CC to 2V. This is the test procedure.

Question 7

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For our sodium nickel manganese iron oxide we use our own 12 4 2 separator. For the hard carbon capacity tests, our testing procedure is: rest 2 h, 0.2C DC to 0 V, 0.1C DC to 0 V, 0.01C DC to 0 V, 10 μA DC to 0 V, rest 3 min, 0.1C CC to 2 V.

Question 8

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

Question 9

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Na3Zr2Si2PO12 is a sodium-ion-conducting solid electrolyte used in sodium solid-state battery research. Cells are assembled as button cells; the assembly structure is similar to conventional liquid electrolyte button cells, but the central separator is replaced with a solid electrolyte disc, and no liquid electrolyte is required (a very small amount of liquid electrolyte is added when testing cell performance to wet the interfaces).

Question 10

Accepted Answer

Lithium-indium alloy negative electrodes perform better at low currents and low loads; they can operate at high currents and high loads as well, but their stability with sulfide electrolytes worsens, and lithium-indium dendrite growth is more likely to penetrate the electrolyte, so long-term cycling performance deteriorates. Compared with pure lithium metal negative electrodes, however, lithium-indium can withstand somewhat higher currents, and the stress from lithium-indium dendrite growth is smaller, so it does not cause obvious structural damage to the electrolyte itself. In addition, the lithium-indium alloy is not the limiting factor for current (thickness is not the key); the current should be chosen based on a comprehensive analysis of the cathode, sulfide electrolyte, interfaces, battery processing, and other factors.

Question 11

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There is currently no such product.

Question 12

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Not yet commercially produced.

Question 13

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Tear open the sealed bag inside the glove box. The structure of the lithium-indium alloy is double-layer indium foil sandwiching lithium powder. Layering is normal; do not pry it apart. Normally punch out pieces of the appropriate size with a punch, assemble the cell mold, finally insert the lithium-indium alloy piece, apply pressure of 5–10 MPa, and an alloy will form within tens of seconds; of course, waiting a few minutes yields a more uniform alloy.

Question 14

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Yes

Question 15

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Nano sulfur

Question 16

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The median particle size (D50) of sodium fluorooxophosphate (Naover V₂ (POⅨ) O₂ F) is 2.377 microns.

Question 17

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The most common state of Naover V₂ (POⅨ) F₂ is monoclinic powder.

Question 18

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None at the moment.

Question 19

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We tested it in a half-cell; theoretical gravimetric capacity >95 mAh/g

Question 20

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

Question 21

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The structure of the lithium–indium alloy foil is an indium sheet sandwiching lithium powder; alloying occurs under applied pressure during use. The negative electrode interface of the lithium–indium alloy does not deteriorate because indium reduces SEI formation and volume expansion, and the growth of lithium dendrites and lithium–indium dendrites differs: lithium dendrites grow vertically through the interface, while lithium–indium dendrites grow in a striped, lateral manner, making them denser and more uniform than lithium dendrites.

Question 22

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NASICON-type solid electrolyte, such as Na₃Zr₂Si₂PO₁₂.Kaolinite-based solid electrolyte, which is more suitable for aqueous zinc-ion batteries.

Question 23

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Carbon cloth cannot be used directly as a lithium battery anode; it has no capacity. Anodes generally use graphite, hard carbon, silicon-carbon, etc.

Question 24

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NZSPO — this is a relatively mainstream and mature sodium-ion solid electrolyte technology at present. Regarding stability, it is stable across a voltage range of 0–4.5 V; it is stable at high voltage, and at low voltage it undergoes some reduction and valence change, but this does not greatly affect battery performance. If examining the mechanism microscopically, the low-voltage behavior may involve valence changes at the nanolayer level.

Question 25

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Yes. Strict moisture control is required, except for electrolytes used in aqueous battery systems.

Question 26

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

Question 27

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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 28

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Theoretically, you can think of it that way, but impurities are often not simply lithium or sodium metals, so their potentials can differ. Sometimes early reactions can passivate the surface, which is not necessarily bad. That’s also why some electrolyte film-forming additives raise the potential so they react earlier and form a good passivation film on the anode surface.

Question 29

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It can be used directly; preferably vacuum bake at 85°C for 6 hours

Question 30

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No. Currently available products are polymer matrix powders such as PEO, PVDF-HFP, and various lithium/sodium salts.

Question 31

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We haven't tried that and aren't sure; this asphalt is a very commonly used grade for coating battery materials.

Question 32

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Our dry cells have all been baked and can be filled with electrolyte directly.

Question 33

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It's because of conductivity issues. Cathode materials themselves have poor conductivity, so they are generally coated.

Question 34

Accepted Answer

Based on the knowledge base content currently provided, it is not possible to list carbon-coated sodium cathode materials.
All the positive materials mentioned belong to the lithium-ion battery system and do not involve sodium-ion batteries.
(Inference: The common carbon-coated sodium cathode materials in reality may include carbon-coated P2-Na. Ni. N. N. N., N. O., O3-NaFeO, Na. V. (PO)). @ C, etc., but this information is not within the scope of this knowledge base.)

Question 35

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Yes, sodium vanadium phosphate (Naover V₂ (POKERIS)) is carbon-coated.
According to the product description, it is a "carbon-coated sodium vanadium phosphate [C3wt.%-NaÁ V₂ (POÁ)] powder" with a carbon content of 3%, and its conductivity is improved by carbon coating, thereby improving electrochemical performance. This is a common modification of this type of material.

Question 36

Question 37

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Single-crystal has a higher tap density and higher energy density; polycrystalline has better rate performance.

Question 38

Accepted Answer

The sodium ion battery positive pole piece (nickel iron manganese sodium pole piece NT02XX) can be adapted to the Na sheet for half-cell, but specific test conditions and processing steps need to be followed. This is based on the principle of operation of sodium-ion batteries.

Question 39

Accepted Answer

We haven't tried that, so we're not sure; this grade of asphalt is a very commonly used type for battery material coatings.

Question 40

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Use a standard 2032 case and follow the same assembly procedure as for liquid cells. The only caution is to use a manual crimper to slowly apply pressure when sealing; it is best not to use an electric crimper. Crimp until the claw walls around the perimeter (the positive case covering the edge of the negative case) are slightly deformed — it is not necessary to fully encase them as with liquid cells. The pressure is about 500 MPa, adjustable according to the actual equipment used; mainly judge by the extent of deformation of the case edge. Excessive pressure can cause breakage. The assembled parts must be aligned, pressure applied evenly, and done slowly.

Question 41

Accepted Answer

From our current packaging results, a packaging thickness of about 2.6–2.7 mm works better

Question 42

Accepted Answer

Confirm the voltage window of this fluoride. If it is conventional, LPSC or LLZO are fine; if it is high-voltage, prioritize LLZO.

Question 43

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Refer to the anode slurry stirring formulation. Check the article on anode stirring on the KeLude public WeChat account.

Question 44

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Both are coated; they are just different models of LiFePO4. D-3

Question 45

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FSI required

Question 46

Accepted Answer

rest 2h, 0.2C DC to 0V, 0.1C DC to 0V, 0.01C DC to 0V, 10 μA DC to 0V, rest 3 min, 0.1C CC to 2V — this is the first cycle gravimetric capacity test step

Question 47

Accepted Answer

According to the context provided, there is no information about the battery mix ratio and temperature of sodium vanadium phosphate (Naover V₂ (POover)). These data are not within the scope of the current knowledge base. If relevant parameters are required, it is recommended to consult the professional literature in the field of sodium ion batteries or the technical data of material suppliers.

Question 48

Accepted Answer

This is basically the same usage method as graphite anodes.

Question 49

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Recommended hard carbon capacity testing procedure: Rest 4 h, 0.2C DC to 0 V, 0.1C DC to 0 V, 0.01C DC to 0 V, 10 μA DC to 0 V, rest 3 min, 0.1C CC to 2 V.

Question 50

Accepted Answer

The pellet’s strength and ionic conductivityhave small variations and have very little effect on battery performance, because during cell testing the current itself is very small.

Question 51

Accepted Answer

Stirring is recommended. If heating is necessary, do so in an anhydrous environment at 35–40 °C, with strict safety precautions due to strong oxidizing properties.

Question 52

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

Question 53

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Electrospinning. The composition is pure PI; due to processing factors it is yellow. Not composite, just a yellow film.

Question 54

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It is battery-grade purity and can be used directly to assemble batteries. There is no percentage value; the material has been carbon-coated and has extremely low impurity content.

Question 55

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Battery grade CMC is sodium carboxymethyl cellulose (sodium Carboxymethyl Cellulose), is a commonly used in lithium ion battery anode water-based binder. It is mainly used to stabilize the electrode slurry, improve the coating quality, and enhance the adhesion between the active material and the current collector, thereby improving the cycle life and processing performance of the battery.

Question 56

Accepted Answer

Yes, the chemical Naover V₂ (POⅨ) F₂ (sodium vanadium fluorophosphate) has corresponding information in our products. It is shown as monoclinic powder with a purity of 99% and is commonly used in the research of cathode materials for sodium ion batteries.

Question 57

Accepted Answer

The 2325 separator (PP/PE/PP three-layer microporous membrane) itself does not have ion selectivity, but allows various ions in the electrolyte to freely migrate through its microporous structure. As such, it is permeable to a variety of ions, including but not limited:
-Li-Li-ion
-Na (sodium ion)
-K (potassium ion)
-Zn²( zinc ion)
-H (proton)
-as well as the corresponding anions such as PFThe, ClOThe, SOOthe, etc.

The specific ions that can be transmitted depend on the electrolyte composition used in the battery system. This conclusion is inferred based on the understanding of the structure of the 2325 separator material and the mechanism of ion conduction.

Question 58

Accepted Answer

In sodium nickel-iron-manganate (NaFe/Lfnfn/Lfn/O₂), the atomic ratio of sodium (Na), iron (Fe), nickel (Ni) and manganese (Mn) is 1:1:1:1 (distributed to metal sites in equal molar ratio), specifically, each chemical formula unit contains 1 Na, 1/3 Fe, 1/3 Ni and 1/3 Mn.

Question 59

Accepted Answer

The median particle size (D50) of sodium fluorooxophosphate (Naover V₂ (POⅨ) O₂ F) is 2.377 microns. Although this material is a derivative of the NVP class of compounds, the "NVP" particle size in the strict sense is not separately listed in this document. Based on the available information, it can be assumed that the user is asking for this material, which has a particle size of 2.377 microns.

Question 60

Accepted Answer

The cathode materials commonly used in sodium-ion batteries mainly include three categories: layered metal oxides (such as Na_xMO₂), polyanionic compounds (such as Naover V₂ (PO₂)) and Prussian blue analogs. These materials have been widely studied and applied because of their stable structure, abundant resources and good sodium ion transport properties.

Question 61

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 62

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"Negative Electrolyte (KLD-NA05)" is for a sodium-ion battery (sodium battery). The "NA" in its model number clearly indicates the sodium system, and there is no current information to indicate that it is suitable for potassium electricity. The electrolyte can be used to construct a sodium metal battery without a negative electrode, and promote the reversible deposition and stripping of sodium metal on the current collector. This conclusion is based on direct inference of product model naming rules and contextual content.

Sodium Chip (Battery negative piece/Na Chip)

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