| 89420-54-2

• 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
• CAS: 89420-54-2
• 化学式: F*Fe*Li*O₄P
• 分子量: 176.758
• InChiKey: AKGHYISYCCMUEY-UHFFFAOYSA-J

计算性质

• 辛醇/水分配系数(LogP)：
  -8.82
• 重原子数：
  8.0
• 可旋转键数：
  0.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  86.25
• 氢给体数：
  0.0
• 氢受体数：
  4.0

反应信息

• 作为反应物：
  描述：

  、 lithium aluminium tetrahydride 以 四氢呋喃 为溶剂， 反应 24.0h， 生成
  参考文献：
  名称：

  A highly fluorinated lithium iron phosphate with interpenetrating lattices: electrochemistry and ionic conductivity

  摘要：

  我们在低熔点通量下合成了一种具有互穿晶格的含氟磷酸铁，其中含有充满锂离子的大通道。

  DOI：

  10.1039/c7dt02202f
• 作为产物：
  描述：

  lithium fluoride 、 ferric phosphate 以 neat (no solvent, solid phase) 为溶剂， 反应 1.0h， 生成
  参考文献：
  名称：

  Ag nanoparticles promoted LiFePO 4 F nanospheres cathode with superior cycling stability for lithium-ion batteries

  摘要：

  Tavorite-like structure LiFePO4F has been recently studied as potential alternative cathode materials for lithium-ion batteries due to its outstanding structural stability, abundant resources and remarkable safety. However, its poor electronic conductivity and lithium-ion diffusion coefficient leads to the unsatisfactory cycling stability and rate capabilities of LiFePO4F. Herein, Ag decorated LiFePO4F nanospheres have been synthesized for the first time via a precipitation method with in-situ reduction of Ag+, simultaneously improving electronic conductivity and lithium-ion diffusion coefficient. The Ag nanoparticles with size of -10 nm are in-situ grown on the surface of LiFePO4F nanospheres with impressive electrochemical performance. It delivers a high discharge capacity of 148.7 mAh g(-1) (very close to the theoretical capacity of 152 mAh g(-1)) at 0.1 C. It is worth mentioning that the Ag-decorated LiFePO4F nanospheres reveal superior cycling stability. The initial discharge capacities of Ag-decorated LiFePO4F reaches up to 120.3 mAh.g(-1) at 0.5 C, and the capacity retention is as high as 96.1% after 300 cycles, which is remarkable higher than that of pure LiFePO4F nanospheres with initial discharge capacity of 110.2 mAh.g(-1) and capacity retention of 83.1% after 300 cycles. Furthermore, the Ag-decorated LiFePO4F displays the average discharge potential loss of only 0.7% which is lower than pure LiFePO4F of 4.7% after 300 cycles, and the corresponding specific energy retention ratio of 95.5% which is higher than that of 80.1%. (C) 2018 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.jallcom.2018.04.075

文献信息

• Phosphorous acid route synthesis of iron tavorite phases, LiFePO₄(OH)_xF_1−x [0 ≤ x ≤ 1] and comparative study of their electrochemical activities
  作者：Hooman Yaghoobnejad Asl、Amitava Choudhury

  DOI：10.1039/c4ra05391e

  日期：——

  New synthesis routes were employed for the synthesis of three derivatives of iron hydroxo-, fluoro-, and mixed hydroxo-fluoro phosphates LiFePO4(OH)xF1−x where 0 ≤ x ≤ 1 with the tavorite structure type, and their detail electrochemical activities have been presented. The hydrothermal synthesis of the pure hydroxo-derivative, LiFePO4OH, using phosphorous acid as a source of phosphate yielded good quality

  新合成路线被用于铁hydroxo-，氟- ，和混合羟氟磷酸盐三个衍生物的合成的LiFePO 4（OH）X ˚F 1- X其中0≤ X ≤1与tavorite结构类型，以及它们的详细已经提出了电化学活性。使用亚磷酸作为磷酸盐源对纯羟基衍生物LiFePO 4 OH进行水热合成，生成了高质量的晶体，首次使用SC-XRD（单晶X射线衍射）解析了晶体结构。氟衍生物LiFePO 4在低温下，使用亚磷酸和混合碱金属硝酸盐，在无溶剂助焊剂基础上将F制成非常细的粉末。还通过水热法合成了混合的阴离子羟基-氟-铁铁氧体相LiFePO 4（OH）0.32 F 0.68。通过恒电流充放电测试，循环伏安法和电化学阻抗谱（EIS）研究了三相的电化学性能。通过将Fe 3+还原为Fe 2+，所有三个阶段均显示出容易插入的锂通过使阴离子从纯OH变为纯F，平均电压在2.4-2.75 V范围内变化。由于在OH位置进行F取代，观察到了0
• Synthesis, crystal structure and electrochemical properties of LiFePO4F cathode material for Li-ion batteries
  作者：D. Chen、G.-Q. Shao、B. Li、G.-G. Zhao、J. Li、J.-H. Liu、Z.-S. Gao、H.-F. Zhang

  DOI：10.1016/j.electacta.2014.09.131

  日期：2014.11

  Tavorite-structured lithium-metal-fluorophosphates for Li+ transition have been recognized as a good alternative to olivine-type cathodes for lithium-ion batteries. They show an exceptional ionic conductivity, excellent thermal stability and capacity retention. In this work, LiFePO4F with high purity is successfully synthesized by a two-step solid-state route. Rietveld refinement shows that open pathways for 3D ion transport exist in LiFePO4F and its discharged state (Li2FePO4F). Cyclic voltammetry data exhibit a clear indication of the Fe3+/2+ redox couple that involves a two-phase transition. Galvanostatic discharge-charge cycling was examined at the rates 0.1-5 C up to 1000 cycles. The voltage plateaus on 2.71/2.86 V indicate a low electrode polarization of 0.15 V. This work attained the largest initial discharge capacity at the highest rate (1 C) reported to date, and almost the same capacity retention at a tenfold higher rate (1 C) than that (0.1 C) within the maximum cycles of 100 reported to date. (C) 2014 Elsevier Ltd. All rights reserved.