Synthesis, characterization and vibrational spectroscopic study of Co, Mg co-doped LiMnPO4

Sronsri, Chuchai; Noisong, Pittayagorn; Danvirutai, Chanaiporn

doi:10.1016/j.saa.2015.08.046

Cited by 27 publications

(9 citation statements)

References 37 publications

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“…The results are usually an improvement with respect to single doping. Such is the case, in particular, for co-doping Fe 2+ and Mg 2+ of LMP [187][188][189][190][191][192][193][194][195][196][197][198], co-doping Fe and Co [199], and co-doping Fe and Ti [200]. In the latter case, Li(Mn 0.85 Fe 0.15 ) 0.92 Ti 0.08 PO 4 /C delivered a capacity of 144 mAh g −1 with a capacity retention close to 100% over 50 cycles at 1 C. Note, however, that a systematic approach for a multi-element doping design in electrode materials for rechargeable batteries by an elitism-improved nondominated sorting genetic algorithm (NSGA-II) optimization led to the conclusion that the best electrochemical performance is expected for multi-doping LMP with optimum compositions LiMn 0.938 Mg 0.024 Co 0.016 Ni 0.022 PO 4 /C and LiMn 0.962 Co 0.012 Ni 0.026 PO 4 /C [201].…”

Section: Dopingmentioning

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: Dopingmentioning

confidence: 99%

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

Mauger

Julien

2018

Batteries

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“…No peaks corresponding to Pt metal or platinum oxide are present which implies that dopant is successfully incorporated in ZnO lattice. A shift in peaks towards higher theta values is observed with increase in dopant content which is attributed to intrusion of Pt having smaller ionic radii (0.62 Å) as compared to Zn (0.74 Å) [7]. The crystallite size calculated using Scherrer's formula was found to be 16.06, 16.35 and 17.15 nm for 0.02, 0.05 and 0.2% Pt-doped ZnO nanoparticles respectively.…”

Section: Sensor Fabrication and Gas Sensing Apparatusmentioning

confidence: 87%

Improvement in Hydrogen Sensing Response of Zinc Oxide Doped with Platinum

Hastir¹,

Kohli²,

Singh³

2016

Proceedings of the World Congress on Recent Advances in Nanotechnology

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Abstract-In this work, the effect of Platinum (Pt) as dopant on the structural, morphological and gas sensing properties of ZnO has been discussed. ZnO and Ptdoped ZnO nanoparticles were synthesized by facile and cost effective co-precipitation technique. XRD analysis revealed the formation of hexagonal wurtzite structure for pure and doped nanostructures which was further supported by Raman studies.Raman and X-Ray photoelectron spectroscopy (XPS) investigations also reveal the presence of defects in doped samples. The morphology of the synthesised samples has been studied by field emission scanning electron microscopy (FESEM). For gas sensing characteristics the synthesized particles were applied as thick film onto an alumina substrate and tested at different operating temperatures for hydrogen gas. Among all samples, 0.05% Pt doped ZnO exhibited enhanced sensing performance towardshydrogen. The increase in sensing response is attributed to presence of defects in doped sample and the catalytic nature of platinum.

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“…Mg doping has been reported by several research groups, which has a good effect on the electrochemical properties of materials 17,34,35 . The radius of Mg 2+ (0.86 Å) is smaller than that of Mn 2+ (0.97 Å, during the embedding process of lithium ions or discharging), but larger than that of Mn 3+ (0.79 Å, during the exiting process of lithium ions or charging).…”

Section: Introductionmentioning

confidence: 94%

“…Mg doping has been reported by several research groups, which has a good effect on the electrochemical properties of materials. 17,34,35 The radius of Mg 2+ (0.86 Å) is smaller than that of Mn 2+ (0.97 Å, during the embedding process of lithium ions or discharging), but larger than that of Mn 3+ (0.79 Å, during the exiting process of lithium ions or charging). Therefore, in the embedding and exiting process of lithium ions, it can be considered that the ion radius of Mg remains basically unchanged, which makes the crystal structure tend to be…”

Section: Introductionmentioning

confidence: 99%

Insight into structural and electrochemical properties of Mg‐doped LiMnPO ₄ /C cathode materials with first‐principles calculation and experimental verification

Chang

Luo

et al. 2021

Intl J of Energy Research

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The LiMnPO 4 material has the advantages of abundant raw materials, safety and environmental protection, low price, high theoretical capacity, high stable working voltage platform and so on, showing great potential in lithium-ion batteries. Dissimilar metal ion doping can essentially improve the electronic conductivity of LiMnPO 4 and the material's charge and discharge performance, which is an ideal method to improve the electrochemical performance of LiMnPO 4 . In this paper, the optimal doping concentration of Mg-doped solid solution material was calculated by first principles. At the same time, the corresponding content of LiMn 1Àx Mg x PO 4 /C cathode material was synthesized by hydrothermal method for experimental verification, so as to prepare the

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Synthesis, characterization and vibrational spectroscopic study of Co, Mg co-doped LiMnPO4

Cited by 27 publications

References 37 publications

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

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

Improvement in Hydrogen Sensing Response of Zinc Oxide Doped with Platinum

Insight into structural and electrochemical properties of Mg‐doped LiMnPO ₄ /C cathode materials with first‐principles calculation and experimental verification

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Synthesis, characterization and vibrational spectroscopic study of Co, Mg co-doped LiMnPO4

Cited by 27 publications

References 37 publications

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

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

Improvement in Hydrogen Sensing Response of Zinc Oxide Doped with Platinum

Insight into structural and electrochemical properties of Mg‐doped LiMnPO 4 /C cathode materials with first‐principles calculation and experimental verification

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Insight into structural and electrochemical properties of Mg‐doped LiMnPO ₄ /C cathode materials with first‐principles calculation and experimental verification