Skip to main content

How to choose the size of Reference Electrode?

 How to choose the size of Reference Electrode?

The diameter of ERA131B[Silver Silver Chloride Ag/AgCl Reference Electrode Φ4*50mm Glass Rod] glass tube is 4mm, which is not the best choice for CHR221B2. The diameter of ERA131A[Silver Silver Chloride Ag/AgCl Reference Electrode Φ6*70mm Glass Rod]is 6mm, which is more suitable for CHR221B2.  

Let me  briefly introduce this electrochemical cell for you.I attached two images, so you can see it clearly:

Figure 1 is the default opening diagram of CHR221B2[H-Type Sealed Electrochemical Cell 30ml 45ml]. The left side is the working electrode chamber opening diagram, and the right side is the counter electrode chamber opening diagram. As shown in the parameter diagram on our product details page, we place the working electrode and the reference electrode in a chamber, and are equipped with gas inlet and outlet holes [for inert gas protection and oxygen-free operation]. We placed a counter electrode in another chamber, which is also equipped with gas inlets and outlets.Generally, we default that the electrode hole is matched with an electrode with a diameter of 6mm for sealing, and the gas hole is sealed with a diameter of 3mm.

Figure 2 is our design concept for the sealing hole. All electrodes or PTFE tubes are sealed by tightening the sealing screw and extruding the fluorine rubber O ring to block the gap between the electrode and the electrode hole or the gap between the PTFE tube and the gas hole. Therefore, assuming your electrode diameter is 6mm, we will open the sealing hole M12-6.7mm with O-ring for sealing. 


Popular posts from this blog

What is the CO2RR Gas Diffusion Flow Cell?

The CO2RR Gas Diffusion Flow Cell (CO2RR GDFC) is a type of electrochemical cell used in the conversion of carbon dioxide (CO2) to other chemicals through a process called the CO2 reduction reaction (CO2RR). It is similar in design to the Gas Diffusion Flow Cell (GDFC) used to measure gas permeability, but it is specifically designed to facilitate the electrochemical reduction of CO2. The CO2RR GDFC consists of a small, sealed chamber with two compartments separated by a thin, gas-permeable membrane. One compartment is filled with a CO2-containing gas mixture, while the other compartment contains an electrolyte solution and a catalyst material, such as copper or silver, which facilitates the CO2RR. The two compartments are separated by the gas-permeable membrane, which allows CO2 to diffuse from the high concentration compartment to the low concentration compartment. The CO2RR is driven by an electric potential applied across the two compartments, which induces the reduction of CO2 int

What is the Gas Diffusion Layer (GDL)?

      The GDL is a porous structure made by weaving carbon fibers into a carbon cloth (e.g. GDL-CT and ELAT) or by pressing carbon fibers together into a carbon paper.  Many of the standard GDLs that are produced today come with a Micro Porous layer (MPL) and hydrophobic treatment (PTFE).  The MPL and PTFE help with the contact to the membrane and with water management.  The MPL typically provides a smooth layer with plenty of surface area for catalyst and good contact with the membrane.  The MPL often uses PTFE as a binder that increases hydrophobicity, which helps keep the water within the membrane from escaping – drying out the membrane and causing higher resistance (lower performance).  There is often an additional PTFE coating on the MPL surface to further augment this. What Exactly Does a Gas Diffusion Layer (GDL) Do? GDL essentially acts as an electrode that facilitates diffusion of reactants across the catalyst layered membrane. The surface area and porosity of the GDL is what

How to do when the mercury oxide reference electrode broken?

Q: How to do when the mercury oxide reference electrode broken? A:  If the electrode is broken, please be sure to operate in accordance with the laboratory hazardous chemical treatment method to avoid the diffusion of mercury oxide, which is a toxic material. Description of the mercury oxide reference electrode: The mercury-mercury oxide(Hg/HgO) reference electrode is mainly used in alkaline solutions. It is an electrode composed of metallic mercury and its insoluble salt HgO and 1M KOH solution. Its electrode potential is 0.098V (25°C). The salt bridge of the Hg/HgO reference electrode is made of glass and PTFE, and the size is φ6*70mm. This size can be matched with various types of Dek Research electrochemical cells. Special attention should be paid to maintenance and storage when using the Hg/HgO reference electrode. The substance containing mercury oxide is a toxic substance, and the salt bridge solution is corrosive. Please strictly abide by the relevant laboratory safety regulati