Physical and electrochemical properties of LiMnPO4/C composite cathode prepared with different conductive carbons

Bakenov, Zhumabay; Taniguchi, Izumi

doi:10.1016/j.jpowsour.2010.05.023

Cited by 155 publications

(91 citation statements)

References 23 publications

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“…The mean peak maximum in the oxidation region of the first cycle lies at 4.20 V, while the mean peak maxima lye around 4.30V from the second cycle on. This result is in good agreement with previous cyclic voltammetry investigations on LiMnPO 4 [8]. The difference in the shape of the first cycle of the voltammetric curves can depend upon several parameters such as structural and morphological changes of the cathode and anode materials, chemical reactions occurring within the electrolyte, at the electrolyte-anode and electrolyte-cathode interfaces.…”

Section: Limnpo 4 /C-nanotube Compositessupporting

confidence: 92%

Nanostructured LiMPO₄(M = Fe, Mn, Co, Ni) – carbon composites as cathode materials for Li-ion battery

Dimesso

Spanheimer

Nguyen

et al. 2012

EPJ Web of Conferences

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Abstract. Nanostructured materials are considered to be strong candidates for fundamental advances in efficient storage and/or conversion. In nanostructured materials transport kinetics and surface processes play determining roles. This work describes recent developments in the synthesis and characterization of composites which consist of lithium metal phosphates (LiMPO 4 , M = Fe, Mn, Co, Ni) coated on nanostructured carbon supports (unordered nanofibers, foams). The composites have been prepared by coating the carbon structures in aqueous (or polyols) solutions containing lithium, metal ions and phosphates. After drying out, the composites have been thermally treated at different temperatures (between 600-780°C) for 5-12 hours under nitrogen. The formation of the olivine structured phase was confirmed by the X-ray diffraction analysis on powders prepared under very similar conditions. The surface investigation revealed the formation of an homogeneous coating of the olivine phase on the carbon structures. The electrochemical performance on the composites showed a dramatic improvement of the discharge specific capacity (measured at a discharge rate of C/25 and room temperature) compared to the prepared powders. The delivered values were 105 mAhg -1 for M = Fe, 100 mAhg -1 for M = Co, 70 mAhg -1 for M = Mn and 30 mAhg -1 for M = Ni respectively.

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Section: Limnpo 4 /C-nanotube Compositessupporting

confidence: 92%

Nanostructured LiMPO₄(M = Fe, Mn, Co, Ni) – carbon composites as cathode materials for Li-ion battery

Dimesso

Spanheimer

Nguyen

et al. 2012

EPJ Web of Conferences

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“…The average particle size slightly decreases in the series AB -KB1 -KB2. The specific surface area and DBP absorption number drastically increase in this row, and for KB2 these characteristics are about 21 and 3 times larger, respectively, than that of AB [43]. It was shown that the electrochemical response increased in the same sequence, AB -KB1 -KB2, and the cathode with KB2 as a conducting agent exhibited the highest discharge capacity.…”

Section: Preparation Of Limnpo 4 By Spray Pyro-lysis and Its Electrocmentioning

confidence: 82%

“…LiMnPO 4 /C composites using different conductive carbons (AB and 2 types of KB) were prepared by a combination of SP and WBM [43]. Ketjen black samples were supplied from Ketjen Black International Company, Japan.…”

Section: Preparation Of Limnpo 4 By Spray Pyro-lysis and Its Electrocmentioning

confidence: 99%

LiMnPO4 Olivine as a Cathode for Lithium Batteries

Bakenov¹,

Taniguchi

2011

TOMSJ

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The olivine structured mixed lithium-transition metal phosphates LiMPO 4 (M = Fe, Mn, Co) have attracted tremendous attention of many research teams worldwide as a promising cathode materials for lithium batteries. Among them, lithium manganese phosphate LiMnPO 4 is the most promising considering its high theoretical capacity and operating voltage, low cost and environmental safety. Various techniques were applied to prepare this perspective cathode for lithium batteries. The solution based synthetic routes such as spray pyrolysis, precipitation, sol-gel, hydrothermal and polyol synthesis allow preparing nanostructured powders of LiMnPO 4 with enhanced electrochemical properties, which is mostly attributed to the higher chemical homogeneity and narrow particle size distribution of the material. Up-to-date, the LiMnPO 4 /C composites prepared by the spray pyrolysis route have the best electrochemical performance among the reported in the literature.

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“…One such example is LiMnPO4 [447][448][449][450][451][452][453][454][455][456][457][458], which is isostructural to that of olivine LiFePO4, while possessing a higher operating voltage (4.1 vs. 3.5 V, respectively) [378,448], and hence energy densities which could exceed 700 Wh kg -1 . At this point, it should be suggested that LiMnPO4 represents a more realistic candidate compared to LiCoPO4 or LiNiPO4, since the working voltage of LiCoPO4 or LiNiPO4 electrodes (4.9 and 5.1 V, respectively), currently lies outside regions of stability of the commonly-employed organic (carbonate) electrolytes [378].…”

Section: Other Transition Metal Phosphates (Limpo4)mentioning

confidence: 99%

Evaluating the performance of nanostructured materials as lithium-ion battery electrodes

et al. 2013

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Access to the full text of the published version may require a subscription. Rights © Tsinghua University Press and Springer-Verlag Berlin ABSTRACTThe performance of the lithium-ion cell is heavily dependent on the ability of the host electrodes to accommodate and release Li + ions from the local structure. While the choice of electrode materials may define parameters such as cell potential and capacity, the process of intercalation may be physically limited by the rate of solid-state Li + diffusion. Increased diffusion rates in lithium-ion electrodes may be achieved through a reduction in the diffusion path, accomplished by a scaling of the respective electrode dimensions.In addition, some electrodes may undergo large volume changes associated with charging and discharging, the strain of which, may be better accommodated through nanostructuring. Failure of the host to accommodate such volume changes may lead to pulverisation of the local structure and a rapid loss of capacity. In this review article, we seek to highlight a number of significant gains in the development of nanostructured lithium-ion battery architectures (both anode and cathode), as drivers of potential next-generation electrochemical energy storage devices.

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Physical and electrochemical properties of LiMnPO4/C composite cathode prepared with different conductive carbons

Cited by 155 publications

References 23 publications

Nanostructured LiMPO₄(M = Fe, Mn, Co, Ni) – carbon composites as cathode materials for Li-ion battery

Nanostructured LiMPO₄(M = Fe, Mn, Co, Ni) – carbon composites as cathode materials for Li-ion battery

LiMnPO4 Olivine as a Cathode for Lithium Batteries

Evaluating the performance of nanostructured materials as lithium-ion battery electrodes

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Physical and electrochemical properties of LiMnPO4/C composite cathode prepared with different conductive carbons

Cited by 155 publications

References 23 publications

Nanostructured LiMPO4(M = Fe, Mn, Co, Ni) – carbon composites as cathode materials for Li-ion battery

Nanostructured LiMPO4(M = Fe, Mn, Co, Ni) – carbon composites as cathode materials for Li-ion battery

LiMnPO4 Olivine as a Cathode for Lithium Batteries

Evaluating the performance of nanostructured materials as lithium-ion battery electrodes

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Product

Resources

About

Nanostructured LiMPO₄(M = Fe, Mn, Co, Ni) – carbon composites as cathode materials for Li-ion battery

Nanostructured LiMPO₄(M = Fe, Mn, Co, Ni) – carbon composites as cathode materials for Li-ion battery