Highly energy density olivine cathode material synthesized by coprecipitation technique

Tan, Zhuo; Wang, Xianyou; Zhou, Henghui

doi:10.1016/j.electacta.2012.12.027

Cited by 21 publications

(8 citation statements)

References 41 publications

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“…SEM images of LiMn 0.7 Fe 0.3 PO 4 /C prepared by coprecipitation (a) and the solid-state method (b), and the corresponding particle size distribution (c). Reproduced with permission from ref . Copyright 2013 Elsevier.…”

Section: Synthesis Methodsmentioning

confidence: 99%

“…Therefore, the design of precursors aims to integrate Fe, Mn and P elements in accordance with the target Mn/Fe ratio, particularly focusing on Fe and Mn elements. Under this premise, researchers have developed various precursors, including Mn–Fe binary precursors (e.g., Mn x Fe 1– x C 2 O 4 − and Mn x Fe y O 4 , ) and Mn–Fe–P ternary precursors (e.g., Mn x Fe 1– x PO 4 , (Mn x Fe 1– x ) 3 (PO 4 ) 2 , ,− and NH 4 Mn x Fe 1– x PO 4 ).…”

Section: Rational Design Of Precursorsmentioning

confidence: 99%

“…Furthermore, the coprecipitation or sol–gel method is commonly employed to synthesize Mn x Fe 1– x C 2 O 4 . For instance, LiMn 0.7 Fe 0.3 PO 4 /C with excellent rate performance (100.6 mAh g –1 at 10C) can be obtained using precursor of Mn 0.7 Fe 0.3 C 2 O 4 ·2H 2 O prepared by coprecipitation . To achieve the desired Mn/Fe ratio, pH control within a specific range is necessary to enhance the precipitation rate of Mn 2+ and Fe 2+ .…”

Section: Rational Design Of Precursorsmentioning

confidence: 99%

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Optimizing the Electrochemical Performance of Olivine LiMn_xFe_1–xPO₄ Cathode Materials: Ongoing Progresses and Challenges

Xu,

Sun,

Lyv

et al. 2024

Ind. Eng. Chem. Res.

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LiMn x Fe1–x PO4 is the most promising olivine-type cathode material following LiFePO4 in terms of development potential. However, several technological challenges remain in its widespread application, particularly in terms of its low electronic conductivity, slow Li+ diffusion rate, and undetermined optimal Mn/Fe ratio. To date, enormous efforts have been devoted to addressing the intrinsic defects of LiMn x Fe1–x PO4 to facilitate its electrochemical kinetics, and some companies have launched first-generation LiMn x Fe1–x PO4. In this review, the structural characteristics, lithium storage mechanism, and synthesis methods of LiMn x Fe1–x PO4 are first introduced. Wherein, a particular emphasis is placed on the rational design of precursors with tunable composition and tailored architecture, encompassing the Mn–Fe binary precursors and Mn–Fe–P ternary precursors. Then, up-to-date optimization strategies for improving the electrochemical performance of LiMn x Fe1–x PO4, such as Mn/Fe ratio optimizing, conductive material compositing, element doping, and morphology controlling are discussed comprehensively, with a special focus on the regulation of additional discharge plateau, which not only prevents the decrease of energy density but also maintains the consistency of LiMn x Fe1–x PO4 batteries. Finally, the critical issues, existing challenges, new research directions, and perspectives on further commercialization of LiMn x Fe1–x PO4 are also discussed.

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Section: Synthesis Methodsmentioning

confidence: 99%

Section: Rational Design Of Precursorsmentioning

confidence: 99%

Section: Rational Design Of Precursorsmentioning

confidence: 99%

See 1 more Smart Citation

Optimizing the Electrochemical Performance of Olivine LiMn_xFe_1–xPO₄ Cathode Materials: Ongoing Progresses and Challenges

Xu,

Sun,

Lyv

et al. 2024

Ind. Eng. Chem. Res.

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“…Several synthetic methods have also been reported, which involve solid state synthesis process [29], sol-gel method [30], ultrasonic spray pyrolysis [31], and co-precipitation method [32]. The hydrothermal/solvothermal methods are attractive due to its capable of customizing particle size and morphology [33].…”

Section: Introductionmentioning

confidence: 99%

Enhanced kinetic behaviors of LiMn0.5Fe0.5PO4/C cathode material by Fe substitution and carbon coating

Yan

Wang

et al. 2015

J Solid State Electrochem

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The LiMn 0.5 Fe 0.5 PO 4 /C nanocrystallites with a uniform size (∼50 nm) are successfully prepared by employing a facile solvothermal method at 180°C. Amphiphilic carbonaceous material (ACM) is chosen as the carbon precursor and forms a homogeneous carbon layer covering the LiMn 0.5 Fe 0.5 PO 4 particles. The asprepared LiMn 0. 5 Fe 0. 5 PO 4 /C sample, with a high Brunauer-Emmett-Teller (BET) surface area of 69.3 m 2 g −1 , is used as the cathode material for lithiumion batteries (LIBs) and delivers a reversible capacity of 158 mAh g −1 at 0.05 C. It shows remarkable rate capability with discharge capacities of 130 mAh g −1 at 1 C, 105 mAh g − 1 at 10 C and 99 mAh g − 1 at 30 C. Meanwhile, the material maintains 121 mAh g −1 at 1 C after 150 cycles with 93 % capacity retention. The kinetic behaviors of LiMn 0.5 Fe 0.5 PO 4 /C sample are investigated by high throughout cyclic voltammetry. The small particle size, partial Fe substitution, and homogeneous carbon coating make a synergetic effect on enhancing the sample's electrochemical properties.

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“…Furthermore, LiMnPO 4 is well compatible with the currently used electrolytes for 4 V positive electrodes such as lithium cobalt oxide (LiCoO 2 ) and lithium manganese oxide (LiMn 2 O 4 ) cathodes. However, LiMnPO 4 suffers from low electronic conductivity (<10 -10 S cm -1 ), [11][12][13] low Li + diffusion coefficient, [14,15] local structure distortion caused by Jahn-Teller effect of active Mn 3+ ions [16] and a large cell volume change between LiMnPO 4 and MnPO 4 during the charge/discharge process. [17,18] To overcome these shortcomings, different strategies have been adopted to optimize the properties of LiMnPO 4 by using nanoscale particles, [19] doping, [20][21][22] carbon coating, [23,24] conductive additive loading, [25] and various synthesis techniques.…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of LiMn0.75Fe0.25PO4/C Nanocomposite Cathode Materials of Lithium-Ion Batteries through Microwave Sintering

Hou¹,

Hou²,

Zhang³

et al. 2020

Eng. Sci.

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LiMn 0.75 Fe 0.25 PO 4 /C nanocomposites are synthesized by a facile hydrothermal and ball-milling method, combining with spraydrying and microwave sintering process. X-ray diffractometer (XRD) and scanning electron microscopy (SEM) results reveal that the sintering process has a strong effect on the structures and morphologies of the as-prepared powders, and thus on the subsequent electrochemical performance. The lattice parameters (a, b, and c) of the microwave sintered sample are all smaller than those of the ordinary sintered sample. Meanwhile, compared to 299.66 Å 3 of unit cell volume for the ordinary heating sintered sample, the value of the microwave sintered sample is 299.15 Å 3 . Transmission electron microscope (TEM) displays that the grains of the microwave sintered sample are less than 50 nm. The microwave sintered sample presents an excellent electrochemical performance with a discharge capacity of 143.5 mAh g -1 and capacity retention of 94.3% after 225 cycles at a rate of 0.1 C. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) show that the microwave sintered electrode has a smaller charge-transfer resistance and a minor polarization and thus results in improved electrode kinetics. The microwave sintering is an economic, energy-saving, and time-saving synthetic method, which has great industrial application prospects.

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Highly energy density olivine cathode material synthesized by coprecipitation technique

Cited by 21 publications

References 41 publications

Optimizing the Electrochemical Performance of Olivine LiMn_xFe_1–xPO₄ Cathode Materials: Ongoing Progresses and Challenges

Optimizing the Electrochemical Performance of Olivine LiMn_xFe_1–xPO₄ Cathode Materials: Ongoing Progresses and Challenges

Enhanced kinetic behaviors of LiMn0.5Fe0.5PO4/C cathode material by Fe substitution and carbon coating

Facile Synthesis of LiMn0.75Fe0.25PO4/C Nanocomposite Cathode Materials of Lithium-Ion Batteries through Microwave Sintering

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Highly energy density olivine cathode material synthesized by coprecipitation technique

Cited by 21 publications

References 41 publications

Optimizing the Electrochemical Performance of Olivine LiMnxFe1–xPO4 Cathode Materials: Ongoing Progresses and Challenges

Optimizing the Electrochemical Performance of Olivine LiMnxFe1–xPO4 Cathode Materials: Ongoing Progresses and Challenges

Enhanced kinetic behaviors of LiMn0.5Fe0.5PO4/C cathode material by Fe substitution and carbon coating

Facile Synthesis of LiMn0.75Fe0.25PO4/C Nanocomposite Cathode Materials of Lithium-Ion Batteries through Microwave Sintering

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Optimizing the Electrochemical Performance of Olivine LiMn_xFe_1–xPO₄ Cathode Materials: Ongoing Progresses and Challenges

Optimizing the Electrochemical Performance of Olivine LiMn_xFe_1–xPO₄ Cathode Materials: Ongoing Progresses and Challenges