{"product_id":"csibcnfpp321","title":"Na3Fe2(PO4)P2O7 (NFPP321) Powder for Na-Ion Battery Cathode, 100-500 g\/bottle, CSIBCNFPP321","description":"\u003cp\u003eNa3Fe2(PO4)P2O7 (NFPP321), commonly referred to as sodium iron orthophosphate-pyrophosphate, is one of the most promising and widely studied cathode materials for next-generation Sodium-Ion Batteries (SIBs).\u003c\/p\u003e\n\u003cp\u003eNFPP321 features a unique hybrid polyanionic framework. Its crystal structure is typically characterized by an orthorhombic symmetry (space group Pna2_1). (1) \u003cstrong\u003ePolyanionic Units\u003c\/strong\u003e: The framework is composed of isolated [{PO4] orthophosphate tetrahedra and corner-sharing [P2O7] pyrophosphate dimers, which link with [FeO6] octahedra. (2) \u003cstrong\u003e3D Diffusion Channels\u003c\/strong\u003e: This specific layout creates a highly stable, rigid 3D framework containing large interstitial tunnels. These open channels allow for rapid, isotropic three-dimensional sodium-ion (Na+) intercalation and deintercalation. (3) \u003cstrong\u003eMinimal Volume Change\u003c\/strong\u003e: Because the polyanionic framework is extremely rigid, it exhibits \"zero-strain\" or near-zero-strain behavior during cycling, with volume change typically restricted to \u0026lt; 4%. This minimizes particle pulverization and leads to exceptional structural longevity.\u003c\/p\u003e\n\u003cp\u003eNFPP321 operates predominantly on the Fe^{2+} \/ Fe{3+} redox couple. (1) \u003cb\u003eTheoretical Capacity:\u003c\/b\u003e \u003cspan class=\"math-inline\"\u003e~108 mAh\/g\u003c\/span\u003e (based on the reversible insertion of \u003cspan class=\"math-inline\"\u003e2 Na+\u003c\/span\u003e ions per formula unit. (2) \u003cb\u003eOperating Voltage:\u003c\/b\u003e A flat, distinct voltage plateau centered around 3.0 V vs. \u003cspan class=\"math-inline\"\u003eNa\/Na+\u003c\/span\u003e. This makes it highly compatible with standard non-aqueous electrolytes and safely below the oxidation limit of most solvents. (3) \u003cb\u003eEnergy Density:\u003c\/b\u003e While its theoretical specific capacity is lower than layered transition metal oxides (like P2 or O3-type \u003cspan class=\"math-inline\"\u003eNaxMO2\u003c\/span\u003e), its stable voltage profile yields a respectable material-level energy density of \u003cspan class=\"math-inline\"\u003e~320 Wh\/kg\u003c\/span\u003e. (4) \u003cb\u003eIntrinsic Safety:\u003c\/b\u003e Thanks to the strong covalent \u003cspan class=\"math-inline\"\u003eP-O\u003c\/span\u003e bonds, oxygen release is tightly locked within the crystal lattice. This gives NFPP superior thermal stability and safety under abuse conditions (e.g., short-circuiting or thermal runaway) compared to oxide-based cathodes.\u003c\/p\u003e\n\u003ctable style=\"width: 100%; height: 509.413px;\" width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 35.6px;\"\u003e\u003cem\u003ePart Number\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eCSIBCNFPP321 (C-SIB-C-NFPP321)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38.2125px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 38.2125px;\"\u003e\u003cem\u003eChemical Formula\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 38.2125px;\"\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eNa3Fe2(PO4)P2O7 (Orthorhombic, Pna2_1)\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: 33.6331%; height: 35.6px;\"\u003e\u003cem\u003eChemical Composition\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eNa: 14.01 wt%    Fe: 24.6 wt%    P: 19.2 wt%   C: 1.71 wt%\u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e\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: 33.6331%; height: 35.6px;\"\u003e\u003cem\u003eParticle Size Distribution\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003eD10: 1.02 um,  D50 =6.60 um,  D90: 13.52 um \u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 21.1375px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 21.1375px;\"\u003e\u003cem\u003eTap Density\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 21.1375px;\"\u003e2.16 g\/cm3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 23.6625px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 23.6625px;\"\u003e\u003cem\u003eSpecific Area\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 23.6625px;\"\u003e8.20 m2\/g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 19.6px;\"\u003e\u003cem\u003epH\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 19.6px;\"\u003e10.58\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 99.4px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 99.4px;\"\u003e\u003cem\u003eXRD\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 99.4px;\"\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CSIBCNFPP321_XRD_100x100.png?v=1781979622\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 165px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 165px;\"\u003e\u003cem\u003eFirst Discharging Capacity\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 165px;\"\u003e\n\u003cp\u003eCharge: ~115.4 mAh\/g\u003c\/p\u003e\n\u003cp\u003eDischarge: ~ 103.7 mAh\/g (0.1 C, 1.5-3.8 V)\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CSIBCNFPP321_Charge-Discharge_100x100.png?v=1781979622\" style=\"margin-bottom: 16px; float: none;\"\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 35.6px;\"\u003e\u003cem\u003eFirst Columbic Efficiency\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 35.6px;\"\u003e\n\u003cp\u003e89.89% \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\u003eNotes\u003c\/strong\u003e: (1) Please store the NFPP321 powder in a dry area (glovebox is preferred); (2) The battery powder is highly recommended to be dried at 80-100°C in a vacuum oven for 6-12 h before use.\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:\/\/pubs.acs.org\/doi\/abs\/10.1021\/acsenergylett.0c01902\"\u003eY. Cao, et al. A New Polyanion Na3Fe2(PO4)P2O7 Cathode with High Electrochemical Performance for Sodium-Ion Batteries, ACS Energy Lett. 2020, 5, 12, 3788–3796\u003c\/a\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003ca href=\"https:\/\/pubs.acs.org\/doi\/abs\/10.1021\/acssuschemeng.3c02013\"\u003eB. Zhang, et al. Heterovalent Chromium-Doped Na3Fe2(PO4)P2O7 Cathode Material with Superior Rate and Stability Performance for Sodium-Ion Storage, ACS Sustainable Chem. Eng. 2023, 11, 27, 10083–10094\u003c\/a\u003e \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"HNXCL","offers":[{"title":"100 g","offer_id":47905720893670,"sku":"CSIBCNFPP321W100","price":69.0,"currency_code":"USD","in_stock":true},{"title":"200 g","offer_id":47905720926438,"sku":"CSIBCNFPP321W200","price":129.0,"currency_code":"USD","in_stock":true},{"title":"500 g","offer_id":47905720959206,"sku":"CSIBCNFPP321W500","price":249.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CSIBCNFPP321_main.png?v=1781978851","url":"https:\/\/echemsupplies.com\/products\/csibcnfpp321","provider":"EChem Supplies","version":"1.0","type":"link"}