Synthesis of LiFePO4 by co-precipitation and microwave heating

Park, KS; Son, Jong‐Tae; Chung, Hyun Kyu; Kim, SJ; Lee, CH; Kim, Ho–Gi

doi:10.1016/j.elecom.2003.08.005

Cited by 196 publications

(72 citation statements)

References 13 publications

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“…Park et al [46] reported that the single-phase LiFePO 4 was synthesized by microwave heating using carbon as a microwave absorber and a reducing agent, and the precursor of LiFePO 4 was prepared by a method of co-precipitation. Higuchi et al [47] reported on LiFePO 4 prepared in a domestic microwave oven; the mixture of starting materials was prepared by manual grinding.…”

Section: Microwave Synthesismentioning

confidence: 99%

Polyanionic Compounds as Cathode Materials

et al. 2016

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Section: Microwave Synthesismentioning

confidence: 99%

Polyanionic Compounds as Cathode Materials

et al. 2016

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“…This compound, which also exists as mineral (triphylite), was prepared using both solid state reaction [12,3,4,11,13] and soft chemistry strategy [9,[10][11][12][13]; the latter was mainly developed to decrease the particle size for avoiding reversible capacity tack, at higher current density. In fact, it was suggest [1] the rate determining lonics 11 (2005) step in the intercalation-deintercalation process is lithium diffusion through LiFePO4/FePO4 interface that increases with specific surface area.…”

Section: Introductionmentioning

confidence: 99%

Phosphate materials for cathodes in lithium ion secondary batteries

Ruffο

Huggins

Mari

et al. 2005

Ionics

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Abstract. Olivine phosphates of general formula LiMPO4 (M = Fe, Co, Ni) were prepared and characterised in order to evaluate new potential cathode materials for secondary lithium ion batteries. The synthesis was performed by soft chemistry methods to avoid problematical and energetic expensive solid state reactions. In all the compounds no secondary phase was detected and the powder morphology was found to be suitable for cathode layers preparation. Only LiFePO4 and LiCoPO4 showed reversible lithium deintercalation-intercalation at 3.5 and 4.8 V vs. Li+/Li, respectively. The LiCoPO4 high potential makes this compound very attractive for high energy batteries, but unfortunately its lifetime appears to be too poor. IntroductionSince the demonstration of lithium intercalation-deintercalation reversibility in LiFePO4 [1], mixed lithium transition metal phosphates with olivine structure have been largely investigated [2-15] and considered as possible candidates for cathode materials in lithium ion secondary batteries.These compounds present some relevant advantages in comparison to the lithium transition metal oxides (LiCoO2, LiNiOz and LiMn204). In particular their phase stability during the intercalation-deintercalation process guarantees adequate performances even at temperatures higher than 60 ~ [14] and prevents risks in abusive or faulty conditions (e.g. overcharge and internal short circuit) [1,2,6,7]. The use of the phosphates as cathode material does not change the specific energy of the electrochemical devices. The specific capacity stored in these phosphates does not largely differ from that of the lithium transition metal oxides. In fact, in the latter the electroactive lithium amount is just only half of the total one, while in the former the quantity can reach also the 80% [8]; an average value of about 135 mAh/g was found for both materials. Furthermore, in the case of the lithium transition metal oxides the redox potential is about 4.0 V vs. Li § while in the phosphates the values ranges from 3.4 to 4.8 V and depends from the nature of transition metal cation [5,8]. An intrinsic negative

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“…Moreover, the synthetic routes include important phenomena in order to achieve the desirable properties. Several methods have thus been proposed to prepare LiFePO 4 , such as solid-state, 14) co-precipitation, 15) hydrothermal, 16,17) 104 C.G. Son, D.R.…”

Section: /Mmentioning

confidence: 99%

Synthesis and Electrochemical Properties of Nanocrystalline LiFePO₄Obtained by Different Methods

Son¹,

Chang²,

Kim³

et al. 2011

Journal of Electrochemical Science and Technology

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:Nanocrystalline LiFePO 4 powders were prepared at 660-670 o C in an Ar atmosphere using two different synthetic routes, solid-state and sol-gel. Both materials showed well-developed XRD patterns without any impurity peaks. Particles composed in the range of 200-300 nm from the solid-state method, and 50-100 nm from the sol-gel method, were confirmed through scanning electron microscopy and dynamic light scattering. The LiFePO 4 obtained by the sol-gel method offered a high discharge capacity (153 mAh/g) and stable discharge behavior, even at elevated temperatures (50 and 60 o C), whereas poor electrochemical performance was observed from the solid-state method. Rate capability studies for sol gel-derived LiFePO 4 ranged from 0.2 to 30 C, which revealed excellent retention over 70 cycles with a 99.9% capacity.

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Synthesis of LiFePO4 by co-precipitation and microwave heating

Cited by 196 publications

References 13 publications

Polyanionic Compounds as Cathode Materials

Polyanionic Compounds as Cathode Materials

Phosphate materials for cathodes in lithium ion secondary batteries

Synthesis and Electrochemical Properties of Nanocrystalline LiFePO₄Obtained by Different Methods

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Synthesis of LiFePO4 by co-precipitation and microwave heating

Cited by 196 publications

References 13 publications

Polyanionic Compounds as Cathode Materials

Polyanionic Compounds as Cathode Materials

Phosphate materials for cathodes in lithium ion secondary batteries

Synthesis and Electrochemical Properties of Nanocrystalline LiFePO4Obtained by Different Methods

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Synthesis and Electrochemical Properties of Nanocrystalline LiFePO₄Obtained by Different Methods