sodium iron phosphate

• 分子结构分类: 无机化合物 - 混合金属/非金属化合物 - 过渡金属氧阴离子化合物
• 英文名称: sodium iron phosphate
• 英文别名: Sodium;iron(2+);phosphate
• 化学式: Fe*Na*O₄P
• 分子量: 173.808
• InChiKey: AWRQDLAZGAQUNZ-UHFFFAOYSA-K

计算性质

• 辛醇/水分配系数(LogP)：
  -5.82
• 重原子数：
  7
• 可旋转键数：
  0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  86.2
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  iron(II) oxide 、 sodium dihydrogenphosphate 以 melt 为溶剂， 反应 0.5h， 生成 sodium iron phosphate
  参考文献：
  名称：

  Vitrification of maricite NaFePO4 crystal by laser irradiation and enhanced sodium ion battery performance

  摘要：

  DOI：

  10.1016/j.jallcom.2021.160928

文献信息

• Magnetic Structures of NaFePO₄ Maricite and Triphylite Polymorphs for Sodium-Ion Batteries
  作者：Maxim Avdeev、Zakiah Mohamed、Chris D. Ling、Jiechen Lu、Mao Tamaru、Atsuo Yamada、Prabeer Barpanda

  DOI：10.1021/ic400870x

  日期：2013.8.5

  The magnetic structure and properties of polycrystalline NaFePO4 polymorphs, maricite and triphylite, both derived from the olivine structure type, have been investigated using magnetic susceptibility, heat capacity, and low-temperature neutron powder diffraction. These NaFePO4 polymorphs assume orthorhombic frameworks (space group No. 62, Pnma), built from FeO6 octahedral and PO4 tetrahedral units

  利用磁化率，热容量和低温中子粉末衍射研究了均来自橄榄石结构类型的多晶NaFePO 4多晶型物，马氏体和三方晶体的磁性结构和性质。这些NaFePO 4多晶型物采用正交构架（空间群编号62，Pnma），由具有角共享和边共享排列的FeO 6八面体和PO 4四面体单元构建。两种多晶型物都表明，铁水石的铁磁性低于13 K，三叶铁矿的铁磁性低于50K。讨论了与三铁矿-LiFePO的超交换和超交换相互作用的磁性结构和性质4。
• Retracted Article: Hollow amorphous NaFePO₄ nanospheres as a high-capacity and high-rate cathode for sodium-ion batteries
  作者：Chun Li、Xue Miao、Wei Chu、Ping Wu、Dong Ge Tong

  DOI：10.1039/c5ta01191d

  日期：——

  Hollow amorphous NaFePO₄ nanospheres exhibited a high storage capacity and high rate as cathode materials for sodium-ion batteries.

  无定形的NaFePO₄纳米球作为钠离子电池的正极材料表现出高储能量和高速率。
• Iron oxidation to amplify the Na and Li storage capacities of nano-sized maricite NaFePO₄
  作者：Tanya Boyadzhieva、Violeta Koleva、Pavel Markov、Radostina Stoyanova

  DOI：10.1039/d1dt03318b

  日期：——

  additionally ball-milled with a carbon additive. The oxidation of Fe2+ proceeds at the nanoscale level within the maricite nanoparticles and causes a massive structural transformation of the maricite phase into a monoclinic NASICON phase Na3Fe2(PO4)3 with the preservation of the crystallinity. The oxidized maricite phase exhibits high specific capacities, cycling stability and rate capability when it is

  该研究报告了一种显着提高具有海镁石结构的纳米级 NaFePO 4电化学性能的有效方法，由于缺乏碱性离子迁移的结构通道，该结构通常被认为是电化学惰性的。该方法基于在温和条件下（即在约 280 °C 的低温和痕量氧）下纳米级海镁石相的完全氧化。它是通过磷酸盐 - 甲酸盐前体方法制备的，并另外用碳添加剂球磨。Fe 2+在水镁石纳米颗粒内的纳米级氧化进行，并导致水镁石相大规模结构转变为单斜晶 NASICON 相 Na 3Fe 2 (PO 4 ) 3保持结晶度。氧化的水镁石相在用作钠和锂半电池的电极时表现出高比容量、循环稳定性和倍率性能。还研究了不同钠和锂电解质对存储性能的影响。发现使用 LiPF 6电解质的Li 半电池实现了最高的比容量（约 150 mA hg -1），而在 Na 半电池中，电解质 NaFSI/EC:DMC 实现了约 100 的比容量毫安汞-1. Na半电池的倍率性能优于Li半电池
• Preparation of Iron Phosphide Particles from an Aqueous Solvent of Oxygen-Contained Precursors Using Spray Pyrolysis
  作者：Kee Young Koo、Seung Bin Park

  DOI：10.1111/j.1551-2916.2007.02038.x

  日期：——

  Iron phosphides were prepared by an economically feasible spray pyrolysis method, in which nontoxic and inexpensive precursors are used in an aqueous solution. The addition of NaCl to the precursor solution promoted crystal growth at a low temperature and helped to avoid sintering during posttreatment. The key conclusion is that the stoichiometry, shape, and size of the particles are related to the NaCl/Fe molar ratio and the posttreatment temperature. Below the melting temperature of NaCl, the shape and stoichiometry of the particles depended on the NaCl/Fe molar ratio, while above the melting temperature, they were dominated by the posttreatment temperature. Wire‐like particles were formed at a NaCl/Fe molar ratio over 15.

  铁磷化物通过一种经济可行的喷雾热解法成功制备，其中使用了无毒且成本低廉的前驱体在水溶液中进行反应。向前驱体溶液中添加NaCl促进了低温条件下的晶体生长，并有助于在后续处理过程中避免烧结现象。关键结论指出：颗粒的化学计量比、形态以及尺寸与NaCl/Fe的摩尔比例及后处理温度密切相关。在低于NaCl熔点的温度下，颗粒的形态和化学计量主要取决于NaCl/Fe的摩尔比例；而当温度超过NaCl熔点时，这些特性则主要受后处理温度的影响。当NaCl/Fe的摩尔比例超过15时，会形成纤维状的颗粒。
• Unravelling the electrochemical activation and the reaction mechanism of maricite-NaFePO₄ using multimodal <i>operando</i> techniques
  作者：Carlos Berlanga、Moulay Tahar Sougrati、Antonio J. Fernández-Ropero、Neyrouz Baaboura、Nicholas E. Drewett、Juan M. Lopez del Amo、Gene Nolis、Jose S. Garitaonandia、Marine Reynaud、Lorenzo Stievano、Montse Casas-Cabanas、Montse Galceran

  DOI：10.1039/d3ta03791f

  日期：——

  Through a combination of multimodal operando, as well as and ex situ, and in situ techniques: Unravelling the intrinsic factors underlying the electrochemical activation of maricite-NaFePO₄.

  通过多模式操作以及原位和原位技术的结合：揭示云母-NaFePO4 电化学活化的内在因素。