{"product_id":"cmcdilrcem","title":"Low Resistance Cation-Exchange Membrane (CEM) for Membrane Capacitive Deionization (MCDI), CMCDILRCEM","description":"\u003cp\u003eIn Membrane Capacitive Deionization (MCDI), placing ion-exchange membranes directly in front of the porous carbon electrodes (an anion-exchange membrane [AEM] at the anode and a cation-exchange membrane [CEM] at the cathode) prevents co-ion expulsion and significantly boosts charge efficiency and salt removal capacity. However, because MCDI relies on transient electrical cycling (alternating polarization and regeneration), ohmic resistance losses across the CEM represent one of the primary bottlenecks limiting energy efficiency and maximum salt adsorption rate (SAR).\u003c\/p\u003e\n\u003cp\u003eTo minimize voltage drop and energetic penalty during rapid charging cycles, high-performance CEMs require specific electrochemical parameters: (1)\u003cstrong\u003e Low Area Electrical Resistance (R_Ω)\u003c\/strong\u003e: Ideally \u0026lt; 1.0 Ω*cm2 (often approaching 0.5 - 0.8 Ω*cm2 in 0.1 M NaCl) to prevent excessive ohmic heating and voltage waste. (2) \u003cstrong\u003eHigh Ion Exchange Capacity (IEC)\u003c\/strong\u003e: Typically 1.2 to 2.0 mmol\/g to ensure a high concentration of fixed negative charges (e.g., tethered sulfonate groups -SO3^-) for efficient counter-ion (Na+) transport. (3) \u003cstrong\u003eOptimized Thickness\u003c\/strong\u003e: Ultra-thin profiles (15-50 um) are heavily favored over traditional thick chlor-alkali membranes to drastically cut down diffusional and electrical resistance paths. (4) \u003cstrong\u003eHigh Permeselectivity \/ Donnan Exclusion\u003c\/strong\u003e: \u0026gt; 95% to prevent co-ion (Cl-) leakage, ensuring that charge efficiency remains near unity. (5) \u003cstrong\u003eModerate Water Uptake\u003c\/strong\u003e: Balanced swelling (15% - 30%) to facilitate rapid hydration-shell ion mobility without sacrificing dimensional stability or mechanical strength during repeated volume expansion\/contraction of the underlying carbon electrodes.\u003c\/p\u003e\n\u003ctable style=\"width: 100.071%; height: 364.2px;\" width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 36.9125px;\"\u003e\n\u003ctd style=\"width: 33.7479%; height: 36.9125px;\"\u003e\u003cem\u003ePart Number\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0348%; height: 36.9125px;\"\u003e\n\u003cp\u003e\u003cspan\u003eCMCDILRCEM (C-MCDI-LRCEM)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 65.137px;\"\u003e\n\u003ctd style=\"width: 33.7479%; height: 65.137px;\"\u003e\u003cem\u003eWorking Mechanism\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0348%; height: 65.137px;\"\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CMDILRCEM_02_240x240.jpg?v=1792791686\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 36.9125px;\"\u003e\n\u003ctd style=\"width: 33.7479%; height: 36.9125px;\"\u003e\u003cem\u003eMembrane Thickness (Dry)\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0348%; height: 36.9125px;\"\u003e\n\u003cp\u003e\u003cspan\u003e~50 um\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 36.9125px;\"\u003e\n\u003ctd style=\"width: 33.7479%; height: 36.9125px;\"\u003e\u003cem\u003eArea Resistance\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0348%; height: 36.9125px;\"\u003e\n\u003cp\u003e\u003cspan\u003e≤2.7 Ω*cm2 (0.5 M NaCl, 25°C)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 40.6375px;\"\u003e\n\u003ctd style=\"width: 33.7479%; height: 40.6375px;\"\u003e\u003cem\u003eSelectivity\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0348%; height: 40.6375px;\"\u003e\n\u003cp\u003e≥96%\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 36.9125px;\"\u003e\n\u003ctd style=\"width: 33.7479%; height: 36.9125px;\"\u003e\u003cem\u003epH Range\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0348%; height: 36.9125px;\"\u003e\n\u003cp\u003e1-12\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 36.9125px;\"\u003e\n\u003ctd style=\"width: 33.7479%; height: 36.9125px;\"\u003e\u003cem\u003eBurst Intensity\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0348%; height: 36.9125px;\"\u003e\n\u003cp\u003e≥0.25 MPa\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 36.9125px;\"\u003e\n\u003ctd style=\"width: 33.7479%; height: 36.9125px;\"\u003e\u003cem\u003eWater Penetration Rate\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0348%; height: 36.9125px;\"\u003e\n\u003cp\u003e\u003cspan\u003e≤ 0.1 mL\/h*cm2*MPa\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33.7479%;\"\u003e\u003cem\u003eThermal Stability\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0348%;\"\u003e\n\u003cp\u003e\u003cspan\u003e≤ 50 °C\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 36.95px;\"\u003e\n\u003ctd style=\"width: 33.7479%; height: 36.95px;\"\u003e\u003cem\u003ePackage Grade\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0348%; height: 36.95px;\"\u003e\n\u003cp\u003e\u003cspan\u003eL20-80cm*W20-40cm\/pcs\/pack\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eReference: \u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S0011916418313535\"\u003eH. Yook, et al., Effects of characteristics of cation exchange membrane on desalination performance of membrane capacitive deionization, Desalination, 2019, 458, 116-121\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S0013468618323648\"\u003eD. H. Kim, et al., Capacitive deionization employing pore-filled cation-exchange membranes for energy-efficient removal of multivalent cations, Electrochimica Acta, 2019, 295, 164-172\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"HZHMKJ","offers":[{"title":"20cm * 20cm","offer_id":67839447138534,"sku":"CMCDILRCEM2020","price":129.0,"currency_code":"USD","in_stock":true},{"title":"40cm * 40cm","offer_id":67839447171302,"sku":"CMCDILRCEM4040","price":399.0,"currency_code":"USD","in_stock":true},{"title":"80cm * 40cm","offer_id":67839447204070,"sku":"CMCDILRCEM8040","price":599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CMCDILRCEM_main.jpg?v=1792792869","url":"https:\/\/echemsupplies.com\/products\/cmcdilrcem","provider":"EChem Supplies","version":"1.0","type":"link"}