Perspective on cycling stability of lithium-iron manganese phosphate for lithium-ion batteries

Zhang, Kun; Li, Zixuan; Li, Xiu; Chen, Xiyong; Tang, Hongqun; Liu, Xinhua; Wang, Cai-Yun; Ma, Jianmin

doi:10.1007/s12598-022-02107-w

Cited by 12 publications

(2 citation statements)

References 85 publications

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“…To further address this issue, our group tried to find modification agents with electrochemical activity to replace the electrochemically inert metal oxides with the purpose to enhance cyclic capacity and cyclability of the graphite-based composite cathode simultaneously. In recent years, lithium iron manganese phosphates (LiFe x Mn 1– x PO 4 ) have attracted much attention to replace commercialized LiFePO 4 because of higher working potential of the redox couple Mn 2+ /Mn 3+ (4.1 V vs Li/Li + ) than that of Fe 2+ /Fe 3+ (3.4 V vs Li/Li + ). − Thereby, enhanced energy density of LiFe x Mn 1– x PO 4 is realized. − The electrically semiconductive or insulative nature of LiFe x Mn 1– x PO 4 makes it become a very suitable candidate to substitute the metal oxides as a modification agent . Moreover, the working potential of the redox couple Mn 2+ /Mn 3+ is very close to the initial intercalation potential of the graphite cathode (∼4.3 V vs Li/Li + ).…”

Section: Introductionmentioning

confidence: 99%

Dual Energy Storages by Sequential “Rocking Chair” and “Dual Ion” Processes of LiFe_0.6Mn_0.4PO₄/Carbon Modified Graphite Flakes

Dai,

Chen,

Chen

et al. 2024

ACS Appl. Energy Mater.

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Metal oxide coatings are regarded as a very efficient way to inhibit electrolyte decomposition and consequently improve the cyclability of high voltage cathode materials for high-energy-density batteries. However, the cathode capacities inevitably decrease due to the electrochemically inert nature of the coating agents. To address this common issue, herein we provide a new design of a 5 V cathode material for dual ion batteries, i.e., a graphite flakes (GF)-based composite cathode using amorphous carbon as well as homogeneously distributed LiFe 0.6 Mn 0.4 PO 4 fine particles as both the electrochemically active material and the coating agent with the aim to enhance cyclic capacity and cyclability simultaneously. Electrochemical evaluations evidence that dual energy storages by the sequential "rocking chair" process of cation Li + and the "dual ion" process of cation Li + /anion PF 6 − endow the composite cathode with capacity enhancements of ∼8% and ∼11% compared with those of GF and TiO 2 /carbon modified GF, respectively. Meanwhile, the capacity retention reaches 85% after 1000 charge/discharge cycles, exhibiting excellent cyclability. Furthermore, improvements in electrolyte−electrode interfacial compatibility, thermodynamics, and dynamics by the LiFe 0.6 Mn 0.4 PO 4 /carbon modification are demonstrated. Multiple coordinative functions generated between the matrix GF and the coating agent are the basis of the simultaneous enhancements in the cyclic capacity and cyclability. This superior dual energy storage strategy may be extended to other high voltage cathode materials to improve cyclic capacity and cyclability simultaneously.

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Section: Introductionmentioning

confidence: 99%

Dual Energy Storages by Sequential “Rocking Chair” and “Dual Ion” Processes of LiFe_0.6Mn_0.4PO₄/Carbon Modified Graphite Flakes

Dai,

Chen,

Chen

et al. 2024

ACS Appl. Energy Mater.

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“…While the ordinary lithium-ion batteries have high specific energy, their specific power is only a few hundred watts per kilogram, which is far less than the requirements of tens of thousands of watts per kilogram. With the rapid development of battery materials and battery technology, the specific power performance of high-power batteries has gradually improved, and has been widely concerned with and applied to the military field, both domestically and abroad [3]. A supercapacitor is a type of energy storage device.…”

Section: Introductionmentioning

confidence: 99%

Research on the Performance Improvement Method for Lithium-Ion Battery in High-Power Application Scenarios

Zhou,

Zhu,

et al. 2024

Energies

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With the development of technology, high-power lithium-ion batteries are increasingly moving towards high-speed discharge, long-term continuous output, instantaneous high-rate discharge, and miniaturization, and are being gradually developed towards the fields of electric tools, port machinery and robotics. Improving the power performance of batteries can be achieved from multiple dimensions, such as electrochemical systems and battery design. In order to improve the power performance of lithium-ion batteries, this paper proposes design methods from the perspective of electrochemical systems, which include increasing the high-rate discharge capacity and low impedance of the battery. This article also studies the preparation of high-power lithium-ion batteries. This article aims to improve the rate performance of batteries by studying high-performance cathode materials, excellent conductive networks, and high-performance electrolytes. This article successfully screened high-performance cathode materials by comparing the effects of different particle sizes of cathode materials on electrode conductivity and battery internal resistance. By comparing the effects of electrolyte additives under pulse cycling, high-quality electrolyte additive materials were selected. By comparing the effects of different types, contents, and ratios of conductive agents on electrode conductivity, battery internal resistance, high-quality conductive agents, and appropriate ratios were selected. Finally, a 10 Ah cylindrical high-power lithium-ion battery with a specific energy of 110 Wh/kg, pulse discharge specific power of 11.3 kW/kg, an AC internal resistance of ≤0.7 m Ω, a 10C full capacity discharge cycle of over 1700, a 30C full capacity discharge cycle of over 500, and a continuous discharge capacity of 10C–30C, and a pulse discharge capacity of over 100C was prepared.

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First‐Principles Investigations of Lithium Manganese Phosphate Cathode Materials: Advances and Prospects

Jie,

Han,

Chen

et al. 2024

Energy Tech

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Lithium manganese phosphate (LiMnPO4) has been considered as promising cathode material for electric vehicles and energy storage. However, its durability and capability still face challenges. The first‐principles calculations are a powerful tool to explore the fundamentals of LiMnPO4 cathode materials. Hereby, the recent advances and prospects in the application of first‐principles calculations boosting LiMnPO4 cathode material for lithium‐ion batteries are analyzed and reviewed. Based on the results from density functional theory calculation and experimental research verification, the micromechanism research progress of the influence of ion doping on the electronic conductivity, lithium‐ion diffusion, working voltage, and stability of LiMnPO4 are summarized in detail. On top of a brief outlook, further elaboration is made on the direction of continuing relevant research.

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Perspective on cycling stability of lithium-iron manganese phosphate for lithium-ion batteries

Cited by 12 publications

References 85 publications

Dual Energy Storages by Sequential “Rocking Chair” and “Dual Ion” Processes of LiFe_0.6Mn_0.4PO₄/Carbon Modified Graphite Flakes

Dual Energy Storages by Sequential “Rocking Chair” and “Dual Ion” Processes of LiFe_0.6Mn_0.4PO₄/Carbon Modified Graphite Flakes

Research on the Performance Improvement Method for Lithium-Ion Battery in High-Power Application Scenarios

First‐Principles Investigations of Lithium Manganese Phosphate Cathode Materials: Advances and Prospects

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Perspective on cycling stability of lithium-iron manganese phosphate for lithium-ion batteries

Cited by 12 publications

References 85 publications

Dual Energy Storages by Sequential “Rocking Chair” and “Dual Ion” Processes of LiFe0.6Mn0.4PO4/Carbon Modified Graphite Flakes

Dual Energy Storages by Sequential “Rocking Chair” and “Dual Ion” Processes of LiFe0.6Mn0.4PO4/Carbon Modified Graphite Flakes

Research on the Performance Improvement Method for Lithium-Ion Battery in High-Power Application Scenarios

First‐Principles Investigations of Lithium Manganese Phosphate Cathode Materials: Advances and Prospects

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Product

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Dual Energy Storages by Sequential “Rocking Chair” and “Dual Ion” Processes of LiFe_0.6Mn_0.4PO₄/Carbon Modified Graphite Flakes

Dual Energy Storages by Sequential “Rocking Chair” and “Dual Ion” Processes of LiFe_0.6Mn_0.4PO₄/Carbon Modified Graphite Flakes