Journal ArticleDOI
LiFePO4 Synthesis Routes for Enhanced Electrochemical Performance
Reads0
Chats0
TLDR
LiFePO4 powders were synthesized under two different conditions ~hydrothermal or mechanochemical activation! using iron~II! phosphate and lithium phosphate as starting materials as mentioned in this paper.Abstract:
LiFePO4 powders were synthesized under two different conditions ~hydrothermal or mechanochemical activation! using iron~II! phosphate and lithium phosphate as starting materials. The samples were characterized by X-ray diffraction, chemical titration, and their electrochemical performance was investigated in terms of cycling behavior and impedance response. We also report the benefit of introducing an electronic conductor precursor ~typically a sucrose! during or after the synthesis to overcome the poor charge transfer associated to the lithium iron phosphate.read more
Citations
More filters
Journal ArticleDOI
Developments in Nanostructured Cathode Materials for High‐Performance Lithium‐Ion Batteries
Ying Wang,Ying Wang,Guozhong Cao +2 more
TL;DR: In this paper, the authors highlight some new progress in using these nanostructured materials as cathodes to develop lithium batteries with high energy density, high rate capability, and excellent cycling stability resulting from their huge surface area, short distance for mass and charge transport, and freedom for volume change.
Journal ArticleDOI
Development and challenges of LiFePO4 cathode material for lithium-ion batteries
Lixia Yuan,Zhaohui Wang,Wu Xing Zhang,Xian Luo Hu,Ji Tao Chen,Yunhui Huang,John B. Goodenough +6 more
TL;DR: LiFePO4 is a competitive candidate of cathode material for the next generation of a green and sustainable lithium-ion battery system due to its long life span, abundant resources, low toxicity, and high thermal stability.
Journal ArticleDOI
Polyanionic (phosphates, silicates, sulfates) frameworks as electrode materials for rechargeable Li (or Na) batteries.
TL;DR: For more than 20 years, most of the technological achievements for the realization of positive electrodes for practical rechargeable Li battery systems have been devoted to transition metal oxides such as LixMO2 (M = Co, Ni, Mn), LixMn2O4, LixV2O5, or LIXV3O8.
Journal ArticleDOI
Lithium deintercalation in LiFePO4 nanoparticles via a domino-cascade model
TL;DR: A characterization of electrochemically deintercalated nanomaterials by X-ray diffraction and electron microscopy that shows the coexistence of fully intercalated and fully deIntercalated individual particles indicates that the growth reaction is considerably faster than its nucleation.
Journal ArticleDOI
Discharge Model for the Lithium Iron-Phosphate Electrode
Venkat Srinivasan,John Newman +1 more
TL;DR: In this paper, a mathematical model for lithium intercalation and phase change in an iron phosphate-based lithium-ion cell was developed to understand the cause for the low power capability of the material.
References
More filters
Journal ArticleDOI
Phospho‐olivines as Positive‐Electrode Materials for Rechargeable Lithium Batteries
TL;DR: In this article, the authors showed that a reversible loss in capacity with increasing current density appears to be associated with a diffusion-limited transfer of lithium across the two-phase interface.
Journal ArticleDOI
Optimized LiFePO4 for Lithium Battery Cathodes
TL;DR: LiFePO 4 powders were synthesized under various conditions and the performance of the cathodes was evaluated using coin cells, the samples were characterized by X-ray diffraction, scanning electron microscope observations, Brunauer, Emmett, and Teller surface area measurements, particle-size distribution measurements, and Mossbauer spectroscopy.
Journal ArticleDOI
Approaching Theoretical Capacity of LiFePO4 at Room Temperature at High Rates
TL;DR: In this article, a composite of the phosphate with a carbon xerogel formed from a resorcinol-formaldehyde precursor is presented, which achieves 90% theoretical capacity at C/2, with very good rate capability and excellent stability.
Journal ArticleDOI
Electroactivity of natural and synthetic triphylite
TL;DR: In this paper, the electrochemical behavior of three triphylite (LiFePO4) ores from different mining localities has been investigated, and the best results were obtained with carbon coatings coming from the decomposition of a modified polycyclic aromatic.
Journal ArticleDOI
Lithium extraction/insertion in LiFePO4: an X-ray diffraction and Mössbauer spectroscopy study
TL;DR: In this paper, the extraction and insertion of lithium in solid-state synthesized LiFePO4 has been followed by in situ X-ray diffraction and Mossbauer spectroscopy in "coffee-bag" cells of type Li-metal.