LiMn0.8Fe0.2PO4: An Advanced Cathode Material for Rechargeable Lithium Batteries

Martha, Surendra K.; Grinblat, Judith; Haik, Ortal; Zinigrad, Ella; Drézen, Thierry; Miners, James H.; Exnar, Ivan; Kay, Andreas; Markovsky, Boris; Aurbach, Doron

doi:10.1002/anie.200903587

Cited by 277 publications

(196 citation statements)

References 15 publications

(34 reference statements)

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“…However, it is not clear that whether transport within the particles or in the liquid-electrolyte-filled pores is rate-limiting [39]. Doping with Fe 2+ in LiMnPO 4 could improve the capacity and kinetics of the LiMnPO 4 electrode materials [24]. Furthermore, the higher reversible capacity and better rate capability also could be attributed to the improved electronic conductivity of the material by coating with carbon.…”

Section: Resultsmentioning

confidence: 97%

“…For instance, Aurbach et al [24] reported a LiFe 0.2 Mn 0.8 PO 4 /C composite as cathode material with a capacity of around 100 mAh g −1 at 10 C. LiFe 0.5 Mn 0.5 PO 4 nanoplates were synthesized by a simple solvothermal route, and the LiFe 0.5 Mn 0.5 PO 4 /C nanoplates exhibited a reversible capacities of 153, 121, 91, 60, and 31 mAh g −1 at 0.02, 0.1, 5, 10, and 18 C, respectively [10]. Furthermore, some methods have been developed for the synthesis of LiFe x Mn 1-x PO 4 , including solid-state process, ultrasonic pyrolysis, sol-gel process, mechanical activation, the solvothermal technique, coprecipitation [8,10,19,[24][25][26]. However, many reported methods require expensive raw material, long annealing times, or several grinding steps.…”

Section: Introductionmentioning

confidence: 98%

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High-rate and long-term cycling capabilities of LiFe0.4Mn0.6PO4/C composite for lithium-ion batteries

Chen

Zhao

et al. 2015

J Solid State Electrochem

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A porous LiFe 0.4 Mn 0.6 PO 4 /C composite was prepared via a simple carbon gel-combustion synthesis process. The obtained product possessed higher surface area, abundant mesopore structure, the improved kinetics and electronic conductivity by doping with Fe 2+ and coating with carbon, respectively. As a cathode material for lithium-ion batteries, the as-prepared LiFe 0.4 Mn 0.6 PO 4 /C composite showed outstanding rate capacities and cycling performances at high charge/ discharge rates. The discharge capacity of LiFe 0.4 Mn 0.6 PO 4 /C was as high as 121.1 mAh g −1 in the first cycle at 0.5 C and remained 103.8 mAh g −1 after 50 cycles. Even at higher rate of 10 C, the initial discharge capacity of the electrode exhibited 64.6 mAh g −1 , and the sample electrode delivered capacity retention of 83.3 % after 1000 cycles. The improved electrochemical properties of the LiFe 0.4 Mn 0.6 PO 4 /C electrode materials suggest the applications of the sample in high power lithium-ion batteries.

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Section: Resultsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 98%

High-rate and long-term cycling capabilities of LiFe0.4Mn0.6PO4/C composite for lithium-ion batteries

Chen

Zhao

et al. 2015

J Solid State Electrochem

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“…Numerous attempts have been made to improve the electrochemical performance of LiMnPO 4 , including reducing crystal size to nanoscale [10][11][12], coating conductive agent such as carbon [12,13] and doping cation such as Fe 2+ , Mg 2+ , Ti 2+ , Ca 2+ , Zr 4+ , or Cu 2+ [14][15][16][17][18][19][20][21][22][23][24][25][26]. These approaches could effectively improve the electrons conductivities and Li + ions transport properties of LiMnPO 4 and thus enhance its electrochemical performances.…”

Section: Introductionmentioning

confidence: 98%

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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“…The electrochemical performance can be improved by coating the samples' surface with carbon, or by doping with Fe atoms or nano-sized cathode materials. Olive phosphate materials combined with mixed transition-metal ions, such as LiFe 1´x Mn x PO 4 /C, have recently attracted considerable attention [3][4][5][6][7][8][9][10][11][12][13][14]. Zou et al [15] prepared LiFe 0.2 Mn 0.8 PO 4 /C cathode materials by a solid-state method and sucrose used as the carbon source.…”

Section: Introductionmentioning

confidence: 99%

The Carbon Additive Effect on Electrochemical Performance of LiFe0.5Mn0.5PO4/C Composites by a Simple Solid-State Method for Lithium Ion Batteries

2016

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This work reported a solid-state method to prepare LiFe 0.5 Mn 0.5 PO 4 /C (LFMP/C) composite cathode materials by using LiH 2 PO 4 , MnO 2 , Fe 2 O 3 , citric acid (C 6 H 8 O 7 ), and sucrose (C 12 H 22 O 11 ). The citric acid was used as a complex agent and C 12 H 22 O 11 was used as a carbon source. Two novel hollow carbon sphere (HCS) and nanoporous graphene (NP-GNS) additives were added into the LFMP/C composite to enhance electrochemical performance. The HCS and NP-GNS were prepared via a simple hydrothermal process. The characteristic properties of the composite cathode materials were examined by micro-Raman spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), elemental analysis (EA), and alternating current (AC) impedance methods. The coin cell was used to investigate the electrochemical performance at various rates. It was found that the specific discharge capacities of LFMP/C + 2% NP-GNS + 2% HCS composite cathode materials were 161.18, 154.71. 148.82, and 120.00 mAh¨g´1 at 0.1C, 0.2C, 1C, and 10C rates, respectively. Moreover, they all showed the coulombic efficiency ca. 97%-98%. The advantage of the one-pot solid-state method can be easily scaled up for mass-production, as compared with the sol-gel method or hydrothermal method. Apparently, the LFMP/C composite with HCS and NP-GNS conductors can be a good candidate for high-power Li-ion battery applications.

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LiMn_0.8Fe_0.2PO₄: An Advanced Cathode Material for Rechargeable Lithium Batteries

Cited by 277 publications

References 15 publications

High-rate and long-term cycling capabilities of LiFe0.4Mn0.6PO4/C composite for lithium-ion batteries

High-rate and long-term cycling capabilities of LiFe0.4Mn0.6PO4/C composite for lithium-ion batteries

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

The Carbon Additive Effect on Electrochemical Performance of LiFe0.5Mn0.5PO4/C Composites by a Simple Solid-State Method for Lithium Ion Batteries

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