Synthesis of LiMn0.75Fe0.25PO4/C microspheres using a microwave-assisted process with a complexing agent for high-rate lithium ion batteries

Kim, Myeong Seong; Jegal, Jong Pil; Roh, Kwang Chul; Kim, Kwang Bum

doi:10.1039/c4ta01197j

Cited by 42 publications

(40 citation statements)

References 48 publications

(79 reference statements)

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“…The red shift can be attributed to the reduction in antisite defects concentration [26,27]. Therefore, the C/LFP/CNTs-M shows less Fe Li antisite defects, which is in good agreement with the XRD analysis.…”

Section: Resultssupporting

confidence: 86%

“…For the improvement of Li ion diffusion ability, the Fe Li antisite defect in crystals is quite a critical factor because the partial occupation of Li sites by Fe atoms inevitably impedes ion transport by blocking the diffusion pathways [22][23][24][25][26][27][28][29]. In particular, the computational [30][31] and experimental [3] studies of LFP have demonstrated that lithium ions can diffuse only through a one dimensional tunnel in the crystal.…”

Section: Introductionmentioning

confidence: 99%

“…However, LFP synthesized by hydrothermal/solvothemal method at low temperatures inherently form Fe Li antisite defects [22]. These intrinsic antisite defects will block the Li + diffusion tunnels, and thus severely slash the electrochemical performance [24][25][26][27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Synthesis of hierarchical conductive C/LiFePO 4 /carbon nanotubes composite with less antisite defects for high power lithium-ion batteries

Song

Shao

et al. 2015

Electrochimica Acta

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Section: Resultssupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

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Synthesis of hierarchical conductive C/LiFePO 4 /carbon nanotubes composite with less antisite defects for high power lithium-ion batteries

Song

Shao

et al. 2015

Electrochimica Acta

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“…The olivine-structured lithium transition metal (LiMPO 4 , M=Mn, Fe, Ni, Co) as a cathode materials for lithium ion batteries has been attracted increasing attention because of its high theoretical capacity, low cost, potential electrochemical property, thermal stability and environmental friendliness [1]. These LiMPO 4 materials have the ability to restrict the internal short circuit in lithium ion battery, because the open phosphate structure of LiMPO 4 can promote the motion of lithium ions and the strong covalent P-O bond energy contributes to avoid the oxygen loss and enhance the structure stability [2,3].…”

Section: Introductionmentioning

confidence: 99%

“…Up to now, considerable studies have been conducted on LiMn 1-x Fe x PO 4 , with an emphasis on the synthetic methods to control the morphology and improve the electrochemical performance. Various morphologies such as nanoparticles [4][5][6][7], nanorods [8], nanoplates [9,10], microspheres [1,11,12] and hollow spheres [13,14] have been synthesized for the LiMn 1-x Fe x PO 4 . The structure superiorities of different morphologies have been used to improve lithium ion storage properties compared with the bulk counterparts.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Electrochemical Performance of Plate-like Structure LiMn0.8Fe0.2PO4/C as a Cathode Material for Lithium Ion Battery

Xiong¹,

Wang²,

Wang³

et al. 2016

Proceedings of the 2nd Annual International Conference on Advanced Material Engineering (AME 2016)

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Abstract. Olivine plate-like structure LiMn 0.8 Fe 0.2 PO 4 /C has been successfully synthesized under mild conditions using H 2 O/DMSO as solvent and CTAB as surfactant. DMSO and CTAB promote the formation of plate-like structure. The prepared plate-like structure LiMn 0.8 Fe 0.2 PO 4 /C delivers a reversible capacity of 141mAh·g -1 at 0.1C-rate, with 80.2% capacity retention at 7C-rate. Meanwhile, the plate-like structure LiMn 0.8 Fe 0.2 PO 4 /C exhibits excellent cycling stability at room temperature with 98.8% capacity retention after 60 cycles at 1C-rate. The plate-like structure LiMn 0.8 Fe 0.2 PO 4 /C cathode materials may have a promising potential application in li-ion batteries.

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Recent Advances of Mn‐Rich LiFe_1‐_yMn_yPO₄ (0.5 ≤ y < 1.0) Cathode Materials for High Energy Density Lithium Ion Batteries

Deng

Yang

Zou

et al. 2017

Advanced Energy Materials

126

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LiMnPO 4 (LMP) is one of the most potential candidates for high energy density (≈700 W h kg -1 ) lithium ion batteries (LIBs). However, the intrinsically low electronic conductivity and lithium ion diffusion coefficient of LMP result in its low performance. To overcome these challenges, it is an effective approach to prepare nanometer-sized Fe-doping LMP (LFMP) materials through optimization of the preparation routes. Moreover, surface coating can improve the ionic and electronic conductivity, and decrease the interfacial side reactions between the nanometer particles and electrolyte. Thus, a uniform surface coating will lead to a significant enhancement of the electrochemical performance of LFMP. Currently, considerable efforts have been devoted to improving the electrochemical performance of LiFe 1-y Mn y PO 4 (0.5 ≤ y < 1.0) and some important progresses have been achieved. Here, a general overview of the structural features, typical electrochemical behavior, delithiation/ lithiation mechanisms, and thermodynamic properties of LiFe 1-y Mn y PO 4based materials is presented. The recent developments achieved in improvement of the electrochemical performances of LiFe 1-y Mn y PO 4 -based materials are summarized, including selecting the synthetic methods, nanostructuring, surface coating, optimizing Fe/Mn ratios and particle morphologies, cation/ anion doping, and rational designing of LFMP-based full cells. Finally, the critical issues at present and future development of LiFe 1-y Mn y PO 4 -based materials are discussed.of LIBs. [3,4] Investigation on the design and preparation of high performance cathode materials has received extensive attention from academic and industrial research worldwide. The first successful example of LiCoO 2 discovered by Goodenough and his co-workers in 1980 is a dominating cathode material in commercial portable electronic devices. [5] It displays medium specific capacity and high compaction density when it is employed as a cathode material in the fabrication of electrode, resulting in its high energy density. In order to improve the safety of LIBs, decrease the cost and to enhance specific capacity, researchers have been trying to find other efficient materials. Many oxide-based positive insertion materials, such as LiMn 2 O 4 , [6] LiMn 1.5 Ni 0.5 O 4 , [7] LiNi 0.8 Co 0.15 Al 0.05 O 2 [8]and LiMn 0.33 Co 0.33 Ni 0.33 O 2[9] were proposed as possible alternatives to the existing layered LiCoO 2 cathodes because of its own shortcomings, such as the toxicity and high cost of cobalt as well as its poor thermal stability. [10] Figure 1 illustrates crystal structures and discharge curves for some typical cathode materials, including layered LiCoO , spinel LiNi 0.5 Mn 1.5 O 4 and olivine LiFePO 4 , in which spinel and olivine materials show flat potential plateaus, while layered materials display sloping potential profiles. [11] Besides the transition metal oxides-based cathode materials, phospho-olivines introduced firstly by Goodenough and co-workers in 1997 as cathode materials for L...

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Synthesis of LiMn_0.75Fe_0.25PO₄/C microspheres using a microwave-assisted process with a complexing agent for high-rate lithium ion batteries

Abstract: LiMn0.75Fe0.25PO4/C microspheres were synthesized using a microwave-assisted process with a complexing agent through the control of precursor pH. The LiMn0.75Fe0.25PO4/C microspheres exhibited a high tap density, high capacity, remarkable rate capability, and excellent cyclability.

Cited by 42 publications

References 48 publications

Synthesis of hierarchical conductive C/LiFePO 4 /carbon nanotubes composite with less antisite defects for high power lithium-ion batteries

Synthesis of hierarchical conductive C/LiFePO 4 /carbon nanotubes composite with less antisite defects for high power lithium-ion batteries

Synthesis and Electrochemical Performance of Plate-like Structure LiMn0.8Fe0.2PO4/C as a Cathode Material for Lithium Ion Battery

Recent Advances of Mn‐Rich LiFe_1‐_yMn_yPO₄ (0.5 ≤ y < 1.0) Cathode Materials for High Energy Density Lithium Ion Batteries

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Synthesis of LiMn0.75Fe0.25PO4/C microspheres using a microwave-assisted process with a complexing agent for high-rate lithium ion batteries

Abstract: LiMn0.75Fe0.25PO4/C microspheres were synthesized using a microwave-assisted process with a complexing agent through the control of precursor pH. The LiMn0.75Fe0.25PO4/C microspheres exhibited a high tap density, high capacity, remarkable rate capability, and excellent cyclability.

Cited by 42 publications

References 48 publications

Synthesis of hierarchical conductive C/LiFePO 4 /carbon nanotubes composite with less antisite defects for high power lithium-ion batteries

Synthesis of hierarchical conductive C/LiFePO 4 /carbon nanotubes composite with less antisite defects for high power lithium-ion batteries

Synthesis and Electrochemical Performance of Plate-like Structure LiMn0.8Fe0.2PO4/C as a Cathode Material for Lithium Ion Battery

Recent Advances of Mn‐Rich LiFe1‐yMnyPO4 (0.5 ≤ y < 1.0) Cathode Materials for High Energy Density Lithium Ion Batteries

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Synthesis of LiMn_0.75Fe_0.25PO₄/C microspheres using a microwave-assisted process with a complexing agent for high-rate lithium ion batteries

Recent Advances of Mn‐Rich LiFe_1‐_yMn_yPO₄ (0.5 ≤ y < 1.0) Cathode Materials for High Energy Density Lithium Ion Batteries