{"product_id":"cssbeleapegdme","title":"PEGDME {Polyethylene glycol dimethyl ether} as Solid-State Battery Electrolyte and Liquid Electrolyte Additive, 100 mL\/bottle, CSSBELEAPEGDME","description":"\u003cp\u003ePolyethylene glycol dimethyl ether (PEGDME) is a versatile \"end-capped\" polyether. Unlike standard Polyethylene Glycol (PEG), which has reactive hydroxyl (-OH) terminal groups, PEGDME replaces these with chemically inert methyl (-CH3) groups. In the battery application, this makes it an exceptional candidate for both solid-state electrolytes (SSE) and liquid electrolyte additives, particularly in Lithium-Sulfur (Li-S) and Lithium-Metal batteries.\u003c\/p\u003e\n\u003cp\u003ePEGDME is rarely used as a standalone rigid solid; instead, it is used to create Plasticized Polymer Electrolytes or Gel Polymer Electrolytes (GPEs). (1)\u003cstrong\u003e Ion Conduction Mechanism\u003c\/strong\u003e: The oxygen atoms in the polyether chain coordinate with Li+ ions. These ions \"hop\" from one ether oxygen site to another as the polymer chains move (segmental motion). (2) \u003cstrong\u003ePlasticization\u003c\/strong\u003e: Adding low-molecular-weight PEGDME to a rigid polymer matrix (like PEO) acts as a lubricant. It breaks down the crystallinity of the host polymer, increasing chain flexibility and boosting ionic conductivity at room temperature. (3) \u003cstrong\u003eThe \"End-Cap\" Advantage\u003c\/strong\u003e: Because it lacks -OH groups, it does not react with the Lithium metal anode. This creates a much more stable interface compared to standard PEG, reducing the \"dead lithium\" formation.\u003c\/p\u003e\n\u003cp\u003eIn liquid or \"semi-solid\" systems, PEGDME is added to tune the physical properties of the electrolyte. (1) \u003cstrong\u003eViscosity and Conductivity\u003c\/strong\u003e: It has a low viscosity and high boiling point. Adding it to carbonate-based electrolytes can improve the \"wetting\" of the separator and electrodes, ensuring better ion access to the active material. (2) \u003cstrong\u003eSolvent for Lithium-Sulfur (Li-S)\u003c\/strong\u003e: PEGDME is a premier solvent for Li-S batteries because it has a high solubility for Lithium Polysulfides (Li2Sn). It helps manage the \"shuttle effect\" by stabilizing these intermediates during the charge\/discharge cycle. It has a significantly lower vapor pressure and higher flash point than traditional solvents like DMC or DEC, making the battery less prone to fire during a short circuit.\u003c\/p\u003e\n\u003cp\u003eIn electrochemical CO2 reduction, PEGDME is a specialized electrolyte additive or co-solvent. Its primary role is to overcome the twin challenges of aqueous CO2RR: the low solubility of CO2 in water and the dominance of the competing Hydrogen Evolution Reaction (HER). (1) \u003cstrong\u003eEnhancing CO2 Solubility and Mass Transport\u003c\/strong\u003e: PEGDME has a significantly higher physical affinity for CO2 than water. Using it as an additive or co-solvent increases the local concentration of CO2 near the catalyst surface. This allows the system to reach much higher partial current densities for carbon products before becoming mass-transport limited. (2) \u003cstrong\u003eSuppression of the Hydrogen Evolution Reaction (HER)\u003c\/strong\u003e: PEGDME molecules adsorb onto the cathode surface, creating a \"water-lean\" or \"water-starved\" micro-environment. By physically displacing water molecules from the active sites, the additive starves the HER pathway, drastically increasing the Faradaic Efficiency (FE) for products like CO or Ethylene. (3) \u003cstrong\u003eStabilization of Intermediates\u003c\/strong\u003e: The ether oxygens can stabilize the *CO2'- radical anion or the *COOH intermediate through dipole interactions. This stabilization can lower the onset potential (the energy required to start the reaction), making the process more energy-efficient.\u003c\/p\u003e\n\u003ctable width=\"100%\" style=\"width: 100%; height: 443.738px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 47.6875px;\"\u003e\n\u003ctd style=\"width: 28.0576%; height: 47.6875px;\"\u003e\u003cem\u003ePart Number\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.5827%; height: 47.6875px;\"\u003e\n\u003cp\u003e\u003cspan\u003eCSSBELEAPEGDME (C-SSBELEA-PEGDME)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 46.4125px;\"\u003e\n\u003ctd style=\"width: 28.0576%; height: 46.4125px;\"\u003e\u003cem\u003eCAS\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.5827%; height: 46.4125px;\"\u003e\n\u003cp\u003e\u003cspan\u003e\u003cbr\u003e24991-55-7\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 46.4125px;\"\u003e\n\u003ctd style=\"width: 28.0576%; height: 46.4125px;\"\u003e\u003cem\u003eChemical Formula\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.5827%; height: 46.4125px;\"\u003e\n\u003cp\u003e\u003cspan\u003eCH\u003c\/span\u003e\u003csub\u003e3\u003c\/sub\u003e\u003cspan\u003eO(CH\u003c\/span\u003e\u003csub\u003e2\u003c\/sub\u003e\u003cspan\u003eCH\u003c\/span\u003e\u003csub\u003e2\u003c\/sub\u003e\u003cspan\u003eO)\u003c\/span\u003e\u003csub\u003en\u003c\/sub\u003e\u003cspan\u003eCH\u003c\/span\u003e\u003csub\u003e3\u003c\/sub\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CSSBELEAPEGDME_molecular_structure_160x160.png?v=1771956526\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 46.4125px;\"\u003e\n\u003ctd style=\"width: 28.0576%; height: 46.4125px;\"\u003e\u003cem\u003eAppearance\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.5827%; height: 46.4125px;\"\u003e\n\u003cp\u003e\u003cspan\u003eColorless liquid\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 10px;\"\u003e\n\u003ctd style=\"width: 28.0576%; height: 10px;\"\u003e\u003cem\u003eMolar Mass\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.5827%; height: 10px;\"\u003e\n\u003cp\u003e\u003cspan\u003e530.65\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28.0576%;\"\u003e\u003cem\u003eBoiling Point\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.5827%;\"\u003e\n\u003cp\u003e\u003cspan\u003e\u003cbr\u003e\u0026gt;250 °C\/1013 hPa\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 55.2px;\"\u003e\n\u003ctd style=\"width: 28.0576%; height: 55.2px;\"\u003e\u003cem\u003eViscosity\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.5827%; height: 55.2px;\"\u003e\n\u003cp\u003e\u003cspan\u003e\u003cbr\u003e15 cSt (40 °C)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 26.0375px;\"\u003e\n\u003ctd style=\"width: 28.0576%; height: 26.0375px;\"\u003e\u003cem\u003ePackage Size\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.5827%; height: 26.0375px;\"\u003e100 or 500 g\/bottle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eNotes\u003c\/strong\u003e: Please try to store the PEGDME in a dry place. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eReferences\u003c\/strong\u003e: \u003c\/span\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S0378775315302445\"\u003eL. Carbone, et al. Polyethylene glycol dimethyl ether (PEGDME)-based electrolyte for lithium metal battery, J. Power Sources, 2015, 299, 460-464\u003c\/a\u003e.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003ca href=\"https:\/\/advanced.onlinelibrary.wiley.com\/doi\/abs\/10.1002\/adfm.202315777\"\u003eR. A. Tong, et al. In-Situ Polymerization Confined PEGDME-Based Composite Quasi-Solid-State Electrolytes for Lithium Metal Batteries, Adv. Funct. Mater., 2024, 34, 2315777\u003c\/a\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003ca href=\"https:\/\/pubs.acs.org\/doi\/10.1021\/jacs.5c05446\"\u003eK. K. Meng, et al., Mechanistic Insights into the Roles of Electrolyte Additives in Enhancing CO2 Electroreduction Efficiency, J. Am. Chem. Soc. 2026, 148, 2, 2139–2147\u003c\/a\u003e.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Aladdin","offers":[{"title":"Default Title","offer_id":47382600024294,"sku":"CSSBELEAPEGDME","price":49.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CSSBELEAPEGDME_main.png?v=1771956527","url":"https:\/\/echemsupplies.com\/products\/cssbeleapegdme","provider":"EChem Supplies","version":"1.0","type":"link"}