Electrochemical behaviors of solid LiFePO4 and Li0.99Nb0.01FePO4 in Li2SO4 aqueous electrolyte

Mi, Changhuan; Zhang, X.G.; Li, H.L.

doi:10.1016/j.jelechem.2007.01.007

Cited by 96 publications

(53 citation statements)

References 48 publications

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“…Sung-yoon chung, et al [38] doped series of metal cations ranging from valence 1+ to 5+ in low concentration (~ 1%) and showed the stability in olivine structure while achieving an improvement in capacity. The supervalent (3 + to 5 + ) dopants like Cr, Y, Ti, Zr M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 9 and Nb have been successfully doped in the olivine structure in low concentration without affecting the structural stability [38][39][40][41][42][43]. These dopant decreases the grain size due to cation vacancies created during charge compensation and also the presence of the dopant increases the size of channel for Li + diffusion.…”

Section: (D) Defects Due To Doping In LI Sitementioning

confidence: 99%

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Role of structural defects in olivine cathodes

Kandhasamy

Kalaiselvi

Minakshi

2012

Progress in Solid State Chemistry

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The high rate capability and structural stability of the olivine phosphates attracted a lot of interest as promising cathode materials for high energy density batteries. Alteration on these cathode materials, for instance, reducing particle size, conductive coating and metal ion doping were performed in order to improve the conductivity and to obtain high specific Li + diffusion. However, the drastic improvement in electrical conductivity for the aliovalent doping is still unclear. Rather writing a lengthy standard review, this manuscript intends to describe briefly the lattice defects owing to metal ion doping and its influence in improving the cathode performance of the olivine phosphates. This gives a new approach in this field.

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Section: (D) Defects Due To Doping In LI Sitementioning

confidence: 99%

“…These dopant decreases the grain size due to cation vacancies created during charge compensation and also the presence of the dopant increases the size of channel for Li + diffusion. This feature has resulted in improving the electrical and ionic conductivity of the olivine cathode [38][39][40][41][42][43].…”

Section: (D) Defects Due To Doping In LI Sitementioning

confidence: 99%

Role of structural defects in olivine cathodes

Kandhasamy

Kalaiselvi

Minakshi

2012

Progress in Solid State Chemistry

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“…The flammable organic electrolytes used in lithium-ion batteries may cause the production of intense smoke or fire in the case of improper use such as overcharge or short-circuit [13,14]. There is a higher risk of fire explosion.…”

Section: Introductionmentioning

confidence: 99%

Improvement of electrochemical and thermal stability of LiFePO4 cathode modified by CeO2

Liu

Cheng

et al. 2009

Journal of Electroanalytical Chemistry

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“…, and other anions) [11][12][13]. Thirdly, a coating is created on the surface of the active material, using carbon or Ag [14].…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2008

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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.

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Electrochemical behaviors of solid LiFePO4 and Li0.99Nb0.01FePO4 in Li2SO4 aqueous electrolyte

Cited by 96 publications

References 48 publications

Role of structural defects in olivine cathodes

Role of structural defects in olivine cathodes

Improvement of electrochemical and thermal stability of LiFePO4 cathode modified by CeO2

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

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