Name: H-type Electrolytic Cell
Brand: Canrud
Price: 75.51 USD

Question 1

Accepted Answer

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

Question 2

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Lithium cobalt oxide (high-voltage type) - Z-4.45V

Question 3

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Yes

Question 4

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Key points include: capacity balancing between cathode and anode; electrolyte compatibility; formulation to minimize polarization; proper alignment and stacking to ensure stable internal contact.

Question 5

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We really haven't tested the hardness of the powder material.

Question 6

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We really haven’t tested hardness for the powder material.

Question 7

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Yes, their crystal structures are the same.

Question 8

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Different manufacturers vary; recommend the customer use D-3

Question 9

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Half-cell discharge data, lithium foil used as the anode

Question 10

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It's single-sided

Question 11

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Our graphite electrode test results are on the official website

Question 12

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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 13

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Graphite used as the anode does need a bit of conductive additive, for example Super P

Question 14

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The amount of electrolyte filled is 4 g

Question 15

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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 16

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The solid content varies between different products; please check the official website for specific parameters

Question 17

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

Question 18

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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 19

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The 16mm separator typically matches a 16mm diameter Swagelok battery, which is a standard size configuration common in the laboratory.

Question 20

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

Question 21

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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 22

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Our graphite anodes are all coated. Industrialized coatings are basically solid-phase, mainly coated with asphalt (this asphalt is available on our Keluode website). The specific coating process is part of the core technology for producing graphite.

Question 23

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Yes, it can be used; for the exact wiring, have the instructor contact the electrochemical workstation's technical support.

Question 24

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This separator is the Celgard 2500 separator. We ourselves have not tested it the way the customer did. When we use it, we assemble cells directly and test cell performance.

Question 25

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Yes, it is.

Question 26

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In half-cells, all tested materials act as the cathode, while lithium metal is the anode. Charging corresponds to delithiation of the test material; discharging corresponds to lithiation.

Question 27

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This is basically the same usage method as graphite anodes.

Question 28

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For pure quasi-solid-state electrolytes, it is not recommended to add liquid electrolyte; you can achieve the target experimental results by modifying the formulation or testing conditions.

Question 29

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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 30

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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 31

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Possible causes include poor cell assembly stability, material degradation at high rates, or lithium dendrite formation causing micro short circuits.

Question 32

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If the cathode range is 1.3 V–4 V, it is recommended that if graphite is used as the anode, the same electrochemical window of 1.3–4 V should be used.

Question 33

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It is normal; it should be on the official website. This varies with different electrolytes; 90%–94% is all normal.

Question 34

Question 35

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For 811 cathode, the specific capacity is roughly just over 180 mAh/g; this is considered normal.

Question 36

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The electrolyte pellets are simply ground and polished, then gold-sputtered on both faces, leaving the edges unsputtered. The gold-coated pellet is clamped between the two faces with a coin-cell test clip for measurement.

Question 37

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 38

Accepted Answer

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 39

Accepted Answer

The ionic conductivity of the solid electrolyte can be tested directly on pressed pellets. When assembling an all-solid-state battery, it is often mixed with the cathode in a certain ratio to form a composite cathode and is not used directly as the electrolyte layer. The electrolyte layer commonly uses LPSC, the anode uses a lithium–indium alloy, and a mold cell is assembled.

Question 40

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 41

Accepted Answer

Oxide solid electrolytes like LLZO have poor interfacial stability; their surface residual base and the highly catalytic La element inside make them prone to promoting PVDF self-coupling defluorination side reactions when compounded with PVDF-type polymers. Adding EC can mitigate this side reaction, as EC reacts with the residual base first.

Question 42

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 43

Accepted Answer

The lithium foil diameter is determined by the diameter of the electrode and the separator. The lithium foil diameter should be larger than the electrode diameter and smaller than the separator diameter. The greater the differences among these three diameters, the easier assembly and better contact for the coin cell. The internal total thickness of a 2032 coin cell case needs to reach about 3.2 mm; any shortfall can be filled with shims. The main thing is to choose the diameter.

Question 44

Accepted Answer

Dissolve the CMC first, then add the conductive agent graphite; after dispersing well, add the SBR last (we introduced this in the article on anode stirring on our public account)

Question 45

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Oxide solid electrolyte powders are themselves formed by sintering. There are several uses: (1) make into a slurry to coat separators; (2) mix into the cathode as an additive to enhance ion conduction; (3) press the powder into green bodies and then sinter to make discs for cell assembly. Note: green bodies made by pressing oxide electrolyte powder have excessively high grain boundary resistance and cannot be used directly for cell testing; (4) use as fillers in composite polymer electrolytes.

Question 46

Accepted Answer

We don't have data on this anode material, but based on graphite, the electrode sheet color varies at different states of charge. You can ask the customer to perform an experiment: charge to different states, then disassemble the cell and observe

Question 47

Accepted Answer

In the tab welding process, tab adhesive is used to insulate and secure the tab relative to other parts. Currently, the domestic market uses white adhesive, black adhesive, yellow adhesive, and single-layer adhesive for tabs. A comparative analysis of these adhesives is as follows: Black adhesive’s functional layer and PP layer are composed of different substances, creating many interfaces; after electrolyte immersion it tends to delaminate, and the black adhesive’s PP layer contains three substances with different melting points: black pigment: 66°C, PE 105°C, PP 137°C, making the interface more unstable. Yellow adhesive’s functional layer has a melting point close to 300°C, so it is easier to operate during heat sealing. Its middle functional layer has replaced the original polybutylene terephthalate with a nonwoven fiber layer, resulting in better interfacial fusion than black adhesive, but it still cannot solve the problem of complete fusion between different materials. Due to the PP layer technology in yellow adhesive, it becomes abnormally hard after heat sealing and loses flexibility; during cell packaging and later processing (tabbing to nickel, adding plates), this can cause the tab adhesive and tab metal to break, leading to electrolyte leakage and gas swelling in the cell. White adhesive uses materials of the same type (PP class) for its three functional layers, so it still maintains high flexibility after heat sealing. White adhesive is produced by co-extruding three layers of PP materials with different functions. Its functional layer has a wide heat-sealing temperature range of 150–180°C, slightly lower than the cell packaging temperature (180–220°C), which can effectively prevent edge short circuits and increases the operable temperature range during cell packaging. Its broader heat-seal temperature ensures fusion with the aluminum-plastic film, and the clear temperature differences among the three PP layers improve packaging operability and increase cell production yield. Single-layer white adhesive is similar to the early inner layer of aluminum-plastic film; because it has only one melting point, if the heat-seal temperature exceeds that melting point it easily causes complete melting short circuits, while insufficient heat-seal temperature leads to softening, which prevents complete melting and polymerization with the CPP layer of the aluminum-plastic film. In the use of tab adhesive, special attention is generally paid to the adhesion between the tab adhesive and the aluminum-plastic film, liquid resistance, the sealing degree with the metal strip, and the tightness of edge fusion and corner sealing. These factors are closely related not only to the properties of the tab adhesive but also to metal strip anticorrosion and wetting treatments, the tab manufacturing process, and the cell sealing process. Therefore, the most suitable tab adhesive should be chosen according to actual process requirements.

Question 48

Accepted Answer

Thinking process:

1. The problem focuses on the choice of binder for "high expansion anode materials such as silicon carbon", with special reference to "recommended use of modified PAA or PAA/SBR composite system" and "PAA or CNT enhanced network structure". It is necessary to judge whether these recommendations are reasonable in combination with the content of the knowledge base, and to carry out integration analysis.

2. Challenges in the Knowledge Base on Silicon Carbon Anodes:
-Silicon expands up to 300% in volume during charge and discharge, resulting in particle breakage, repeated SEI generation, electrical contact failure, and poor cycle performance.
-The internal stress of the negative pole piece is large, and the traditional CMC/SBR bonding force is not enough to maintain structural stability.

3. Information about PAA (polyacrylic acid):
-The document "Binder property vs. cell performance" clearly points out: PAA has a high Young's modulus and strong hydrogen bonding, which can provide

Question 49

Accepted Answer

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 50

Accepted Answer

For oxide electrolyte pellets assembled into button cells, common dimensions are 10–16 mm diameter and 1 mm thickness, matching CR2032 cases. Ceramic pellets are quite hard but brittle; the pressure needed when crimping a button cell must be determined experimentally. During assembly the parts must be aligned, all contact surfaces flat and free of debris, and pressure applied slowly. Assembly skill is important; you cannot guarantee the pellet won’t crack regardless of how you press.

Question 51

Accepted Answer

The "AI-plated battery case" you mentioned may have errors in expression or conceptual confusion. According to the available information, no "AI plating" technique is currently applied to battery cases. But we can speculate that what you might want to know is one of the following related technologies:

Aluminum plating (Aluminum Coating): In some battery designs, especially the soft pack battery (Pouch Cell), a composite film with an aluminum layer is used as a shell material (such as aluminum plastic film). This aluminum layer acts as a conductive, shielding and structural support, not a "AI" (artificial intelligence).

2. Surface treatment technology: The battery shell (such as steel shell or aluminum shell) is often surface coating treatment, such as zinc plating, nickel plating, etc., to enhance corrosion resistance, conductivity and welding performance. These are traditional metal surface treatment processes.

3. Application of AI in battery manufacturing: Although it is not "plating AI", artificial intelligence (AI) is indeed widely used in the battery manufacturing process, such:
-Quality inspection (judging battery appearance defects through image recognition)
-Optimization of process parameters (e. g. intelligent control of stirring, coating and rolling processes)
-Fault prediction and sorting (e. g. identification of potential failure risks through data analysis)

To sum up, "plating the AI battery case" is not a practical technology. You may be mistaking "Al plating" (aluminum plating) as "AI plating", or referring to the intelligent application of AI technology in the manufacture of battery cases. Please confirm the specific direction of your question in order to get a more accurate answer.

H-type Electrolytic Cell

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