Synthesis, characterization and electrochemical performances of LiFePO4/graphene cathode material for high power lithium-ion batteries

Shang, Weili; Kong, Lingyong; Ji, Xuewu

doi:10.1016/j.solidstatesciences.2014.10.002

Cited by 20 publications

(6 citation statements)

References 26 publications

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“…Since coating the particles with a highly graphitic type of carbon is difficult, it might seem simpler to just prepare an LFP/graphene composite, and many works have been published on such a composite [49][50][51][52][53][54][55][56][57][58]. The difficulty in that case is to disperse the graphene; otherwise, the improvement of the rate capability is limited [59].…”

Section: Lfp/graphene Compositesmentioning

confidence: 99%

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: Lfp/graphene Compositesmentioning

confidence: 99%

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

Mauger

Julien

2018

Batteries

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“…Although slight voltage maximum has been observed for bulk materials before [37][38][39][40][41], it has never been as pronounced as in LiFePO 4 thin films obtained in this work (Fig. 5.9 a).…”

Section: Sequential Particle Charging and Discharging In Lifepo 4 Thimentioning

confidence: 37%

Nanostructured materials and their thin films for Li-ion battery electrodes: synthesis, research and performance

Kučinskis¹,

Kaprāns²,

Bajārs³

2019

Nanostructured Composite Materials for Energy Storage and Conversion: Collection of Articles

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“…Moreover, all linear portions of the magnetization curves extrapolate to about the same magnetization (called M 0 ). There is only a peak of magnetic susceptibility at T=52 K (T N , Néel temperature of pure crystallized LFP) in χ −1 (T) plot, which refers to the transition temperature from antiferromagnetic ordering to paramagnetic range for LFP/C [27,28]. A typical Curie-Weiss law behavior is then followed above T N .…”

Section: Resultsmentioning

confidence: 99%