Kinetic study on LiFePO4/C nanocomposites synthesized by solid state technique

Liu, Hao; Li, C.; Zhang, H.P.; Fu, Lijun; Wu, Yuping; Wu, Hui

doi:10.1016/j.jpowsour.2005.10.098

Cited by 265 publications

(131 citation statements)

References 14 publications

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“…The D Li + of LFP/C NMs (10 − 17 cm 2 S − 1 ) is approximately two orders larger than that of LFP/C NPs (10 − 19 cm 2 S − 1 ), meaning more facile Li + ion diffusion inside LFP/C NMs, which is consistent with the CV results. [ 13 ] Figure 2 c shows the charge-discharge curves of LFP/C NMs and LFP/C NPs at different specifi c rates. LFP/C NMs exhibited excellent rate capability with initial discharge capacities of 158 (0.1 C), 147 (0.2 C), 134 (0.5), 117 (1 C), 109 (2 C) and 85 mA h g − 1 (5 C), while LFP/C NPs showed a corresponding capacities of 150 (0.1 C), 130 (0.2 C), 109 (0.5 C), 89 (1 C), 74 (2 C) and 53 mA h g − 1 (5 C).…”

Section: Doi: 101002/adma201003713mentioning

confidence: 99%

Hierarchical Carbon‐Coated LiFePO₄ Nanoplate Microspheres with High Electrochemical Performance for Li‐Ion Batteries

2011

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Section: Doi: 101002/adma201003713mentioning

confidence: 99%

Hierarchical Carbon‐Coated LiFePO₄ Nanoplate Microspheres with High Electrochemical Performance for Li‐Ion Batteries

2011

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“…However, in order to understand the nonlinear electrical characteristic presented in the curves of capacity-temperature, more effort has been concentrated on the electrochemical properties of LVP/C. [25][26][27] are used to further consider the electrochemical performances of the sample at various temperatures. Figure 5 illustrates CV curves of the LVP/C sample at room temperature using a scanning rate of 0.1, 0.2, 0.5, and 1 mV s −1 .…”

Section: Resultsmentioning

confidence: 99%

“…The lithium ion diffusion coefficients (D Li ) at various temperatures were calculated according to the following equation [25][26][27]:…”

Section: Electrochemical Properties Of LI 3 V 2 (Po 4 ) 3 /C Cv and Eismentioning

confidence: 99%

Low-temperature behavior of Li3V2(PO4)3/C as cathode material for lithium ion batteries

Liu

Kang

et al. 2011

J Solid State Electrochem

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The electrochemical performance of Li 3 V 2 (PO 4 ) 3 /C was investigated at various low temperatures in the electrolyte 1.0 mol dm −3 LiPF 6 /ethyl carbonate (EC)+diethyl carbonate (DEC)+dimethyl carbonate (DMC) (volume ratio 1:1:1). The stable specific discharge capacity is 125.4, 122.6, 119.3, 116.6, 111.4, and 105.7 mAh g −1 at 26, 10, 0, −10, −20, and −30°C, respectively, in the voltage range of 2.3-4.5 V at 0.2 C rate. When the temperature decreases from −30 to −40°C, there is a rapid decline in the capacity from 105.7 to 69.5 mAh g −1 , implying that there is a nonlinear relationship between the performance and temperature. With temperature decreasing, R ct (corresponding to charge transfer resistance) increases rapidly, D (the lithium ion diffusion coefficients) decreases sharply, and the performance of electrolyte degenerates obviously, illustrating that the lowtemperature electrochemical performance of Li 3 V 2 (PO 4 ) 3 /C is mainly limited by R ct , D Li , and electrolyte.

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“…Moreover, the introduction of carbon into LiFePO 4 cathode material as nucleating agent could suppress the grown of LiFePO 4 grains and shorten the diffusion path of Li + to enhance the ionic conductivity. 54,55 In addition, the carbon introduction into LiFePO 4 cathode could also play a role of reducing agent to avoid the oxidation of Fe 2+ .…”

Section: Carbon Materialsmentioning

confidence: 99%

Review—Recent Research Progress in Surface Modification of LiFePO₄Cathode Materials

et al. 2017

J. Electrochem. Soc.

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The olivine structure lithium iron phosphate (LiFePO 4 ) is considered as one of the promising lithium ion batteries cathode materials for its high theoretical specific capacity, excellent reversibility, thermal stability, environmental friendliness, and low cost. However, the application of LiFePO 4 in vehicle power battery was hindered by its poor electronic and ionic conductivity. To solve these problems, various strategies, including surface coating, element doping, and particle size reduction were proposed. In this review, we summed up some recent researches on surface modification of LiFePO 4 and explained the mechanisms of modification. Moreover, the defects and advantages of these modification methods were discussed. Finally, an outlook for the surface modifications of LiFePO 4 cathode materials was given. Since the SONY corporation developed the first generation of commercial lithium-ion batteries in the 1990s, lithium-ion battery has been widely applied in various electronic equipment, such as a carrier of energy storage and conversion.1 In particular, the great development has been made for applications of lithium ion battery in vehicle power.2-6 As the most expensive component of lithium ion battery, cathode materials achieve much attention also for its strong effects on battery capacity, cycle life, and security. Compared with conventional cathode materials, such as LiCoO 2 , LiNiO 2 , and LiMn 2 O 4 , LiFePO 4 is a promising cathode material for rechargeable batteries used for hybrid electric vehicles and bare electric vehicles for its high theoretical capacity (170 mAhg −1 at room temperature), long cycle ability, excellent thermal stability, environmental friendliness, and low cost. [7][8][9]

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Kinetic study on LiFePO4/C nanocomposites synthesized by solid state technique

Cited by 265 publications

References 14 publications

Hierarchical Carbon‐Coated LiFePO₄ Nanoplate Microspheres with High Electrochemical Performance for Li‐Ion Batteries

Hierarchical Carbon‐Coated LiFePO₄ Nanoplate Microspheres with High Electrochemical Performance for Li‐Ion Batteries

Low-temperature behavior of Li3V2(PO4)3/C as cathode material for lithium ion batteries

Review—Recent Research Progress in Surface Modification of LiFePO₄Cathode Materials

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Kinetic study on LiFePO4/C nanocomposites synthesized by solid state technique

Cited by 265 publications

References 14 publications

Hierarchical Carbon‐Coated LiFePO4 Nanoplate Microspheres with High Electrochemical Performance for Li‐Ion Batteries

Hierarchical Carbon‐Coated LiFePO4 Nanoplate Microspheres with High Electrochemical Performance for Li‐Ion Batteries

Low-temperature behavior of Li3V2(PO4)3/C as cathode material for lithium ion batteries

Review—Recent Research Progress in Surface Modification of LiFePO4Cathode Materials

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Product

Resources

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Hierarchical Carbon‐Coated LiFePO₄ Nanoplate Microspheres with High Electrochemical Performance for Li‐Ion Batteries

Hierarchical Carbon‐Coated LiFePO₄ Nanoplate Microspheres with High Electrochemical Performance for Li‐Ion Batteries

Review—Recent Research Progress in Surface Modification of LiFePO₄Cathode Materials