Synthesis of vanadium doped LiMnPO4 by an improved solid-state method

Dai, Enrui; Fang, Haisheng; Yang, Bin; Ma, Wenhui; Dai, Yongnian

doi:10.1016/j.ceramint.2015.03.035

Cited by 18 publications

(7 citation statements)

References 30 publications

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“…Second, its very good mechanical properties help in accommodating the volume changes of the active particles during cycling, thus improving the cycle life. This is true for any cathode of Li-ion batteries [161], and this has been testified to in the particular case of LMP in different works [162,163]. Superior results were observed with 300-500 nm thick LMP particles wrapped in 3 wt % reduced graphene oxide (RGO) [164].…”

Section: Graphene-lmp Compositesmentioning

confidence: 94%

Olivine Positive Electrodes for Li-Ion Batteries: Status and Perspectives

Mauger

Julien

2018

Batteries

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Among the compounds of the olivine family, LiMPO 4 with M = Fe, Mn, Ni, or Co, only LiFePO 4 is currently used as the active element of positive electrodes in lithium-ion batteries. However, intensive research devoted to other elements of the family has recently been successful in significantly improving their electrochemical performance, so that some of them are now promising for application in the battery industry and outperform LiFePO 4 in terms of energy density, a key parameter for use in electric vehicles in particular. The purpose of this review is to acknowledge the current state of the art and the progress that has been made recently on all the elements of the family and their solid solutions. We also discuss the results from the perspective of their potential application in the industry of Li-ion batteries.The main disadvantage of olivines with respect to other cathode chemistries for lithium batteries is the lower energy density. This is evidenced in Table 1 where we have reported the gravimetric and volumetric energy densities of LFP and two other cathode materials which have also found a market place in commercial batteries for electric vehicles: the manganese spinel LiMn 2 O 4 , and "LiNiCoAl" (NCA). In terms of energy density, the winner is clearly NCA, the cathode material used by Panasonic to manufacture the batteries of Tesla cars. However, the low energy density of LFP was not an obstacle for its success for EV applications. The top-selling EV manufacturer in the world today is BYD, which makes its own batteries. Its success comes from its choice of the LFP cathode chemistry. As an example, BYD's LFP battery used by e6 taxis in Shenzen has a driving range of 200 km and can be charged to 80% in just 20 min, or 100% in only 40 min using a BYD DC fast charger. The town has 12,000 taxis which will be electric by the end of this year, and all of the 7,000,000 buses are already electric buses, 80% being BYD buses.

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Section: Graphene-lmp Compositesmentioning

confidence: 94%

Olivine Positive Electrodes for Li-Ion Batteries: Status and Perspectives

Mauger

Julien

2018

Batteries

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“…As well as LMP, LFP has also been doped with transition metals, such as V, resulting in dramatic improvements in high-rate performance, either because of favorable structural changes in the olivine lattice/improvements in conductivity or due to the formation of highly conductive secondary vanadium-containing phases on the LFP surface. − The latter approach has also been used to improve the performance of LMP cathodes in a Li-ion battery, by formation of a V-doped LiMnPO 4 material or a composite cathode comprising of a highly conductive Li 3 V 2 (PO 4 ) 3 phase mixed with LMP. − …”

Section: Introductionmentioning

confidence: 99%

Mapping Structure-Composition-Property Relationships in V- and Fe-Doped LiMnPO₄ Cathodes for Lithium-Ion Batteries

et al. 2016

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A series of LiMnFeVPO (LMFVP) nanomaterials have been synthesized using a pilot-scale continuous hydrothermal synthesis process (CHFS) and evaluated as high voltage cathodes in Li-ion batteries at a production rate of 0.25 kg h. The rapid synthesis and screening approach has allowed the specific capacity of the high Mn content olivines to be optimized, particularly at high discharge rates. Consistent and gradual changes in the structure and performance are observed across the compositional region under investigation; the doping of Fe at 20 at% (with respect to Mn) into lithium manganese phosphate, rather than V or indeed codoping of Fe and V, gives the best balance of high capacity and high rate performance.

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“…More recently, several reports have proved that the electrochemical activity of bulk LiMnPO 4 can be effectively enhanced by incorporating with a small amount of Li 3 V 2 (PO 4 ) 3 additives [7][8][9]. On one hand, the structure modification of V doping at Mn sites can increase the electronic and ionic transport speed of LiMnPO 4 phase [10][11][12]. On the other hand, the homogeneous dispersion of Li 3 V 2 (PO 4 ) 3 crystallites in LiMnPO 4 body reduces Lidiffusion distance in the LiMnPO 4 [13].…”

Section: Introductionmentioning

confidence: 99%

Synthesis ofxLiMnPO₄·yLi₃V₂(PO₄)₃/C Nanocomposites for Lithium Ion Batteries Using Tributyl Phosphate as Phosphor Source

Wang¹,

Zhu²,

Liu³

et al. 2017

Journal of Nanotechnology

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ThexLiMnPO4·yLi3V2(PO4)3/C (x/y= 1 : 0, 12 : 1, 8 : 1, 6 : 1, 4 : 1, 0 : 1) composite cathode materials are synthesized using tributyl phosphate as a novel organic phosphor source via a solid-state reaction process. All obtainedxLiMnPO4·yLi3V2(PO4)3/C composites present similar particles morphology with an average size of ca. 100 nm and low extent agglomeration. The electrochemical performance of pristine LiMnPO4/C can be effectively improved by adding small amounts of Li3V2(PO4)3additives. The 4LiMnPO4·Li3V2(PO4)3/C has a high discharge capacity of 143 mAh g−1at 0.1 C and keeps its 94% at the end of 100 cycles.

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Synthesis of vanadium doped LiMnPO4 by an improved solid-state method

Cited by 18 publications

References 30 publications

Olivine Positive Electrodes for Li-Ion Batteries: Status and Perspectives

Olivine Positive Electrodes for Li-Ion Batteries: Status and Perspectives

Mapping Structure-Composition-Property Relationships in V- and Fe-Doped LiMnPO₄ Cathodes for Lithium-Ion Batteries

Synthesis ofxLiMnPO₄·yLi₃V₂(PO₄)₃/C Nanocomposites for Lithium Ion Batteries Using Tributyl Phosphate as Phosphor Source

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Synthesis of vanadium doped LiMnPO4 by an improved solid-state method

Cited by 18 publications

References 30 publications

Olivine Positive Electrodes for Li-Ion Batteries: Status and Perspectives

Olivine Positive Electrodes for Li-Ion Batteries: Status and Perspectives

Mapping Structure-Composition-Property Relationships in V- and Fe-Doped LiMnPO4 Cathodes for Lithium-Ion Batteries

Synthesis ofxLiMnPO4·yLi3V2(PO4)3/C Nanocomposites for Lithium Ion Batteries Using Tributyl Phosphate as Phosphor Source

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Mapping Structure-Composition-Property Relationships in V- and Fe-Doped LiMnPO₄ Cathodes for Lithium-Ion Batteries

Synthesis ofxLiMnPO₄·yLi₃V₂(PO₄)₃/C Nanocomposites for Lithium Ion Batteries Using Tributyl Phosphate as Phosphor Source