{"product_id":"cocfevqw","title":"Flow Electrolyzer with Visual Quartz Window for Operando Characterizations, COCFEVQW","description":"\u003cp\u003eA flow electrolyzer equipped with a visual quartz window is a specialized piece of hardware, often referred to as an operando or in-situ optical cell. Unlike standard, opaque industrial stacks, these cells are custom-designed for research and diagnostics. By integrating a transparent window directly into the flow field or end plate, researchers can directly observe and quantify the complex physical and chemical phenomena occurring at the electrode surface in real-time while the cell is operating under continuous flow.\u003c\/p\u003e\n\u003cp\u003eTo accommodate optical access without destroying the electrochemical functionality of the cell, several components must be heavily modified compared to a standard flow stack: (1) \u003cstrong\u003eQuartz Window\u003c\/strong\u003e: Fused quartz is the material of choice due to its exceptional optical transmission across a broad spectrum (from UV to near-infrared), its chemical inertness to harsh electrolytes, and its mechanical strength to withstand pressurized flow. (2) \u003cstrong\u003eModified Current Collectors\u003c\/strong\u003e: In a standard cell, a solid metal or carbon bipolar plate presses against the gas diffusion layer. In a visual cell, this must be replaced with a transparent or highly perforated current collector. This is often achieved using a fine titanium or gold mesh, a patterned interdigitated metal grid, or sometimes transparent conductive oxides (like FTO or ITO) deposited directly on the quartz, though these have lower conductivity. (3) \u003cstrong\u003eSpecialized Flow Fields\u003c\/strong\u003e: The flow channels are often machined directly into a transparent acrylic\/polycarbonate housing that backs the quartz, or the quartz itself acts as the boundary of a single, open flow channel to ensure an unobstructed view of the catalyst layer. (4) \u003cstrong\u003eSealing\u003c\/strong\u003e: Creating a leak-proof seal between hard quartz and the other cell components requires precision-cut PTFE or Viton gaskets, taking care not to crack the quartz under the compression required to assemble the stack.\u003c\/p\u003e\n\u003cp\u003eVisual flow electrolyzers are critical for troubleshooting mass transport limitations and optimizing cell designs in several complex electrochemical systems. (1) \u003cstrong\u003eBubble Dynamics in Gas-Evolving Reactions\u003c\/strong\u003e: In reactions where gases are produced—such as water electrolysis or the electrochemical reduction of CO₂—managing the gas-liquid-solid interface is the biggest engineering hurdle. The quartz window allows high-speed cameras to track: Bubble Nucleation and Growth: Where and how quickly bubbles form on the catalyst surface. Detachment and Sweeping: How effectively the flowing liquid electrolyte sweeps bubbles away. If bubbles linger, they block active catalyst sites (the \"bubble overpotential\"), drastically reducing cell efficiency. (2) \u003cstrong\u003eFlow Distribution in Liquid Systems\u003c\/strong\u003e: For systems relying on liquid reactants, such as redox flow batteries, the window allows for the visualization of fluid dynamics across the porous transport layers. It can be used to identify dead zones: Dyes or the natural color changes of active species (e.g., vanadium in different oxidation states) can be tracked to see if the electrolyte is distributing evenly or if there are stagnant areas in the flow field. (3)\u003cstrong\u003e In-Situ Spectroscopy\u003c\/strong\u003e: Beyond simple optical cameras, the quartz window acts as a portal for advanced spectroscopic techniques. Lasers can be fired through the window to perform operando Raman or UV-Vis spectroscopy, identifying intermediate chemical species forming on the catalyst surface in real-time.\u003c\/p\u003e\n\u003ctable style=\"width: 100%; height: 1125.71px;\" width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 33.0935%; height: 35.6px;\"\u003e\u003cem\u003ePart Number\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.7266%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003eCOCFEVQW (C-OC-FE-VQW)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 145.6px;\"\u003e\n\u003ctd style=\"width: 33.0935%; height: 145.6px;\"\u003e\u003cem\u003eStructure\/Components\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.7266%; height: 145.6px;\"\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\n\u003cul\u003e\n\u003cli\u003eCurrent Collector\/Flow Channel: one piece of SS316L or Ti plate.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDiameter of quartz window: 26 mm (thickness: ~13 mm)\u003c\/li\u003e\n\u003cli\u003eElectrode Gasket: PTFE\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eTubing Connection: Barbed hose fitting (connecting tube I.D. 2 mm) \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eM4 tighten screw (8 pieces)\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e         \u003cimg style=\"float: none;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/COCFEVQW_03_160x160.png?v=1772693045\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 85.6px;\"\u003e\n\u003ctd style=\"width: 33.0935%; height: 85.6px;\"\u003e\u003cem\u003eCell Sizes\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.7266%; height: 85.6px;\"\u003e\n\u003cul\u003e\n\u003cli\u003eDefault effective area is 2.0 cm * 2.0 cm (4.0 cm2) \u003c\/li\u003e\n\u003cli\u003eOther types of active areas, such as (1.6cm * 1.6cm) (3.2cm * 3.2cm), (5 cm * 5cm) are also available upon request.  \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCell size: W60×H70 mm \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 353.6px;\"\u003e\n\u003ctd style=\"width: 33.0935%; height: 353.6px;\"\u003e\u003cem\u003eFlow Channels\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.7266%; height: 353.6px;\"\u003e\n\u003cul\u003e\n\u003cli\u003eStandard flow channel is \u003cstrong\u003eSerpentine\u003c\/strong\u003e\u003cstrong style=\"font-size: 0.875rem;\"\u003e     \u003c\/strong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e \u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: start;\"\u003e        \u003cimg style=\"margin-bottom: 16px; float: none;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/COCFEVQW_04_160x160.png?v=1772693108\"\u003e\n\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e Other flow channel types: such as interdigital, parallel serpentine are also available upon request.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e          \u003cimg style=\"float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CGRFBTCFC_03_100x100.png?v=1769371649\"\u003e   \u003cimg style=\"float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CGRFBTCFC_04_100x100.png?v=1769371649\"\u003e\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 122.113px;\"\u003e\n\u003ctd style=\"width: 33.0935%; height: 122.113px;\"\u003e\u003cem\u003eAssembling Diagram\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.7266%; height: 122.113px;\"\u003e\n\u003cdiv style=\"text-align: start;\"\u003e           \u003cimg style=\"margin-bottom: 16px; float: none;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/COCFEVQW_02_160x160.png?v=1772692937\"\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33.0935%;\"\u003e\u003cem\u003eFlow Pump (\u003cspan style=\"color: rgb(247, 8, 8);\"\u003eOptional\u003c\/span\u003e)\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.7266%;\"\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\n\u003cul\u003e\n\u003cli\u003eThe flow pump can be supplied upon request\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CMEAFESFC_flow_pump_160x160.png?v=1772439579\" style=\"float: none;\"\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 33.0935%; height: 39.2px;\"\u003e\u003cem\u003eNote\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.7266%; height: 39.2px;\"\u003eThe cell components should be thoroughly cleaned and dried after use. \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"TZTX","offers":[{"title":"SS316L","offer_id":47422565089510,"sku":"COCFEVQWS","price":999.0,"currency_code":"USD","in_stock":true},{"title":"Titanium (Ti)","offer_id":47422565122278,"sku":"COCFEVQWT","price":1299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/COCFEVQW_main.png?v=1772692448","url":"https:\/\/echemsupplies.com\/products\/cocfevqw","provider":"EChem Supplies","version":"1.0","type":"link"}