{"product_id":"cazsbchpse","title":"High Purity Selenium (Se, \u003e99.99%, 200 mesh) Powder for Aqueous Zn-Se Battery Cathode, 50-200 g\/Bottle, CAZSBCHPSe","description":"\u003cp\u003eHigh-purity selenium (Se) powder is an advanced chalcogen cathode material for aqueous rechargeable batteries—most notably aqueous zinc-selenium (Zn-Se) systems. Positioned conceptually between sulfur and tellurium in Group 16, selenium offers a compelling combination of high volumetric capacity, superior electronic conductivity relative to sulfur, and reversible multi-electron conversion redox kinetics.\u003c\/p\u003e\n\u003cp\u003eThe key electrochemical advantages of the Se powder for aqueous Zn-Se battery are: (1) \u003cstrong\u003eReversible Conversion \/ Intercalation Redox Couple\u003c\/strong\u003e:: Elemental iodine is intrinsically an electrical insulator. To unlock high rate capabilities, high-purity I2 powder must be thoroughly blended and ball-milled with conductive carbon hosts (such as Super P, multi-walled carbon nanotubes, graphene, or porous carbon frameworks) that provide a continuous electronic pathway. (2) \u003cstrong\u003eHigh Volumetric and Gravimetric Capacity: \u003c\/strong\u003eElemental selenium delivers a high theoretical specific capacity (~ 675 mAh\/g) based on a two-electron transfer). More importantly, because of its high tap density compared to sulfur (~ 4.82 g\/cm}^3), it achieves a remarkably high volumetric energy density, making it attractive for space-constrained cell designs. (3) \u003cstrong\u003eSuperior Intrinsic Electronic Conductivity\u003c\/strong\u003e: Unlike sulfur—which is a severe electronic insulator (~ 10^{-30} S\/cm) requiring massive amounts of conductive carbon—selenium is a semi-metal with an electrical conductivity several orders of magnitude higher (~ 10^{-5} S\/cm or better depending on allotrope), which facilitates faster charge transfer and lower internal polarization.\u003c\/p\u003e\n\u003ctable width=\"100%\" style=\"width: 100.036%; height: 278.8px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 33.6898%; height: 35.6px;\"\u003e\u003cem\u003ePart Number\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.1319%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003eCAZSBCHPSe (C-AZSB-C-HPSe)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 33.6898%; height: 35.6px;\"\u003e\u003cem\u003eCAS\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.1319%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003e7782-49-2\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 33.6898%; height: 35.6px;\"\u003e\u003cem\u003ePurity\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.1319%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003e\u0026gt;99.99%\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 33.6898%; height: 35.6px;\"\u003e\u003cem\u003eAppearance\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.1319%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003eGray or greyish-black\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 33.6898%; height: 35.6px;\"\u003e\u003cem\u003eMolar Mass\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.1319%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e78.96 g\/mol\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 33.6898%; height: 35.6px;\"\u003e\u003cem\u003eParticle Size\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.1319%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e200 mesh\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 10px;\"\u003e\n\u003ctd style=\"width: 33.6898%; height: 10px;\"\u003e\u003cem\u003eDensity\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.1319%; height: 10px;\"\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e4.81 g\/mL at 25 °C (lit.)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 33.6898%; height: 19.6px;\"\u003e\u003cem\u003eMelt Point\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.1319%; height: 19.6px;\"\u003e\u003cspan\u003e217 °C (lit.)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 33.6898%; height: 35.6px;\"\u003e\u003cem\u003ePackage Grade\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.1319%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003e50 g, 100 g, and 200 g\/bottle\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\u003cbr\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:\/\/advanced.onlinelibrary.wiley.com\/doi\/abs\/10.1002\/aenm.202404426\"\u003eL. Ma, et al. Electrocatalytic Selenium Redox Reaction for High-Mass-Loading Zinc-Selenium Batteries with Improved Kinetics and Selenium Utilization, Adv. Energy Mater., 2025, 15, 2404426\u003c\/a\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/pubs.acs.org\/aamick\/article-abstract\/15\/41\/48225\/1228458\/Interfacial-Modification-of-a-Zn-Anode-by?redirectedFrom=fulltext\"\u003e\u003cspan\u003eX. Yuan, et al. Interfacial Modification of a Zn Anode by Amorphous Se toward Long-Life and Hydrogen Evolution-Free Aqueous Rechargeable Batteries, ACS Appl. Mater. Interfaces (2023) 15 (41): 48225–48234.\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"MKL","offers":[{"title":"50 g","offer_id":67650745139430,"sku":"CAZSBCHPSeW50","price":99.0,"currency_code":"USD","in_stock":true},{"title":"100 g","offer_id":67650745172198,"sku":"CAZSBCHPSeW100","price":179.0,"currency_code":"USD","in_stock":true},{"title":"200 g","offer_id":67650745204966,"sku":"CAZSBCHPSeW200","price":319.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CAZSBCHPSe_main.jpg?v=1791485784","url":"https:\/\/echemsupplies.com\/products\/cazsbchpse","provider":"EChem Supplies","version":"1.0","type":"link"}