Electrochemical performance of Ru-doped LiFePO4/C cathode material for lithium-ion batteries

Wang, Yourong; Yang, Yuxin; Hu, Xin; Yang, Yanbo; Shao, Huixia

doi:10.1016/j.jallcom.2009.03.033

Cited by 57 publications

(20 citation statements)

References 33 publications

(37 reference statements)

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“…The lattice parameters of these two samples have been calculated and summarized in Table 1. Doping effect will sometimes increase lattice parameters or decrease depend on doping ion and amount of doping [22][23][24][25][26][27][28]. It has been seen that the lattice parameter along b-axis increases in LiNiPO 4 as the position of Li + in the lattice is partially replaced by Y 3+ , which is favorable to the transmission of Li ions for the Li ion transmitting along b-axis [16,29].…”

Section: Xrd Analysismentioning

confidence: 99%

Structural, dielectric, and conductivity studies of yttrium-doped LiNiPO4 cathode materials

Prabu

Selvasekarapandian

Kulkarni

et al. 2011

Ionics

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Olivine-structured pure LiNiPO 4 and yttriumdoped LiNiPO 4 have been synthesized by a Pechini-type polymerizable precursor method. Compound formation temperature is confirmed from thermogravimetry to differential thermal analysis. Powder X-ray diffraction pattern confirmed the formation of phase pure LiNiPO 4 compound with an orthorhombic structure with fine crystallite size. Presence of preferred local cation environment is understood from Fourier transform infrared spectroscopy (FTIR) studies. XRD and FTIR studies show that doped yttrium ion entered in the lattice of LiNiPO 4. It has been found that the ionic conductivity of LiNiPO 4 is enhanced by around two orders of magnitude by doping yttrium. Dielectric spectra show the decrease in dielectric constant with increase in frequency. Dielectric loss spectra reveal that dc conduction contribution predominates in the sample.

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Section: Xrd Analysismentioning

confidence: 99%

Structural, dielectric, and conductivity studies of yttrium-doped LiNiPO4 cathode materials

Prabu

Selvasekarapandian

Kulkarni

et al. 2011

Ionics

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“…Various doping elements such as Ru 4+ [10], V 3+ [11], Zn 2+ [12] and Cu 2+ [13] have been tried to improve the property of LiFePO 4 . For orthosilicate materials, Li 2 MnSiO 4 is isostructural with Li 2 FeSiO 4 , and it has a high theoretical capacity of 333 mAh g −1 on the basis of Mn 3+ /Mn 2+ and Mn 4+ /Mn 3+ redox couples [14].…”

Section: Introductionmentioning

confidence: 99%

Effect of Mn substitution on the structural, morphological and electrochemical behaviors of Li2Fe1−xMnxSiO4 synthesized via citric acid assisted sol–gel method

Deng

Zhang

Yang

2009

Journal of Alloys and Compounds

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“…In the past several years, significant progress has been made in this filed by doping various metal cations [20][21][22][23][24][25][26][27][28][29], such as Cu 2+ , Mn 2+ , Nd 3+ , Nb 5+ into LiFePO 4 , and their improved electrochemical performances have been reported. For example, Huang et al [30] prepared Na + ion-doped LiFePO 4 /C and obtained improved reversible capacity of 142 mAh g −1 at a rate of 1 C. The improved electrochemical performance of Na + ion-doped LiFePO 4 /C sample can be attributed to its larger lattice parameters in a and c axis direction.…”

Section: Introductionmentioning

confidence: 99%

Effects of yttrium ion doping on electrochemical performance of LiFePO4/C cathodes for lithium-ion battery

Chen

Wang

et al. 2015

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The olivine-type LiFe 1-x Y x PO 4 /C (x=0, 0.01, 0.02, 0.03, 0.04, 0.05) products were prepared through liquid-phase precipitation reaction combined with the high-temperature solid-state method. The structure, morphology, and electrochemical performance of the samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), energydispersive spectroscopy (EDS), galvanostatic charge-discharge, cyclic voltammetry, and electrochemical impedance spectroscopy (EIS). We found that the small amount of Y 3+ ion-doped can keep the microstructure of LiFePO 4 , modify the particle morphology, decrease charge transfer resistance, and enhance exchange current density, thus enhance the electrochemical performance of the LiFePO 4 /C. However, the large doping content of Y 3+ ion cannot be completely doped into LiFePO 4 lattice, but existing partly in the form of YPO 4 . The electrochemical performance of LiFePO 4 /C was restricted owing to YPO 4 . Among all the doped samples, LiFe 0.98 Y 0.02 PO 4 /C showed the best electrochemical performance. The LiFe 0.98 Y 0.02 PO 4 /C sample exhibited the initial discharge capacity of 166.7, 155.8, 148.2, 139.8, and 121.1 mAh g −1 at a rate of 0.2, 0.5, 1, 2, and 5 C, respectively. And, the discharge capacity of the material was 119.6 mAh g −1 after 100 cycles at 5 C rates.

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Electrochemical performance of Ru-doped LiFePO4/C cathode material for lithium-ion batteries

Cited by 57 publications

References 33 publications

Structural, dielectric, and conductivity studies of yttrium-doped LiNiPO4 cathode materials

Structural, dielectric, and conductivity studies of yttrium-doped LiNiPO4 cathode materials

Effect of Mn substitution on the structural, morphological and electrochemical behaviors of Li2Fe1−xMnxSiO4 synthesized via citric acid assisted sol–gel method

Effects of yttrium ion doping on electrochemical performance of LiFePO4/C cathodes for lithium-ion battery

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