Performance of LiFePO4 as lithium battery cathode and comparison with manganese and vanadium oxides

Yang, Shoufeng; Song, Yanning; Ngala, Katana; Zavalij, Peter Y.; Whittingham, M. Stanley

doi:10.1016/s0378-7753(03)00240-4

Cited by 113 publications

(84 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…37 Strengite and phosphosiderite can be synthesized by either acid reflux or boiling 17,43 or at hydrothermal conditions. 44 The main industrial application of hydrated iron phosphates is their use as cathodes in Li batteries, [45][46][47][48] while giniite is used as a potential dehydrogenation catalytic material. Despite this past work, our understanding of the nucleation, growth, and transformation of Al and Fe phosphate minerals is still fragmented.…”

Section: Introductionmentioning

confidence: 99%

Precipitation of Iron and Aluminum Phosphates Directly from Aqueous Solution as a Function of Temperature from 50 to 200 °C

Roncal-Herrero

Rodríguez-Blanco

Benning

et al. 2009

Crystal Growth & Design

View full text Add to dashboard Cite

ABSTRACT:The nucleation and crystallization of Al and Fe phosphate phases directly from aqueous solutions were investigated experimentally in batch reactors at 50 to 200°C and pH 1.6. The mineralogy, elemental composition, and morphology of the formed solids were characterized by X-ray diffraction, spectroscopy, and high-resolution microscopic techniques. The corresponding dissolved aqueous Al, Fe, and P concentrations were analyzed by spectroscopic and chromatographic techniques. In all experiments Al and Fe phosphate phases readily precipitate from supersaturated solutions. Precipitation is initiated by the nucleation and growth of amorphous Al or Fe phosphate precursors. These crystallize at T = 100°C to either variscite and metavariscite or strengite and phosphosiderite, respectively. At T g 150°C, these Al and Fe amorphous phases recrystallize to either berlinite or ferric giniite, respectively. The composition of the aqueous solution in all cases evolves rapidly to near saturation with respect to variscite and strengite. These observations suggest that Al and Fe phosphates may be critical to limiting aqueous phosphate availability in many natural environments.

show abstract

Section: Introductionmentioning

confidence: 99%

Precipitation of Iron and Aluminum Phosphates Directly from Aqueous Solution as a Function of Temperature from 50 to 200 °C

Roncal-Herrero

Rodríguez-Blanco

Benning

et al. 2009

Crystal Growth & Design

View full text Add to dashboard Cite

show abstract

“…However, its drawbacks are that, at less than 10 −8 S/cm it has a low electrical conductivity, and also has a low diffusion of lithium ions, so consequently it shows low power performance [8].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical characteristics of LiFePO4/LiCoO2 mixed electrode for Li secondary battery

et al. 2008

View full text Add to dashboard Cite

LiFePO 4 cathode active material was synthesized using a solid state method and a mixed cathode was prepared by adding LiCoO 2 . A coin cell was prepared using the mixed cathode and its electrochemical performances were evaluated. The LiFePO 4 material improved both in thermal stability and rate capability. The discharge capacity of the 5 wt.% LiCoO 2 -added LiFePO 4 material was 139.4 mAh/g at 0.2 C rate, and it showed a capacity retention of 64.2% even at 5 C rate in comparison to 0.2 C rate. The cycle performance of the bare LiFePO 4 material was excellent, but the capacity fading of 20 wt.% LiCoO 2 -added LiFePO 4 material became significant during charge/discharge cycle. However, 5∼10 wt.% LiCoO 2 -added LiFePO 4 material showed good thermal stability, high rate capability and good cycle performances.

show abstract

“…The as-prepared samples show higher conductivities, in the range of 10 À5 -10 À6 S cm À1 , however, it is not yet high enough for high power lithium batteries. [113] To increase the conductivity, the material could be doped as suggested by Chiang and co-workers. [112] However, doping may have deleterious impact if it occurs on the lithium sites.…”

mentioning

confidence: 99%

Developments in Nanostructured Cathode Materials for High‐Performance Lithium‐Ion Batteries

2008

View full text Add to dashboard Cite

Nanostructured materials lie at the heart of fundamental advances in efficient energy storage and/or conversion, in which surface processes and transport kinetics play determining roles. This Review describes some recent developments in the synthesis and characterization of nanostructured cathode materials, including lithium transition metal oxides, vanadium oxides, manganese oxides, lithium phosphates, and various nanostructured composites. The major goal of this Review is to 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 in nanostructured materials.

show abstract

Performance of LiFePO4 as lithium battery cathode and comparison with manganese and vanadium oxides

Cited by 113 publications

References 36 publications

Precipitation of Iron and Aluminum Phosphates Directly from Aqueous Solution as a Function of Temperature from 50 to 200 °C

Precipitation of Iron and Aluminum Phosphates Directly from Aqueous Solution as a Function of Temperature from 50 to 200 °C

Electrochemical characteristics of LiFePO4/LiCoO2 mixed electrode for Li secondary battery

Developments in Nanostructured Cathode Materials for High‐Performance Lithium‐Ion Batteries

Contact Info

Product

Resources

About