Improvement in hydrophobicity of olivine lithium manganese iron phosphate cathodes by SiF4 treatment for lithium-ion batteries

Theivanayagam, Murali G.; Hu, Terry; Ziebarth, Robin; Santhany, Stacie; Goss, Janet; Maeda, Hitoshi; Patel, Avani; Behr, Michaël; Lowe, Michael A.; Leugers, Anne

doi:10.1016/j.ssi.2015.09.012

Cited by 5 publications

(2 citation statements)

References 32 publications

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“…For example, SiF 4 coated LiMn 0.80 F 0.20 PO 4 /carbon (or LMFP) were prepared to generate hydrophobic coatings that could protect the cathodes from moisture attack. 194 The SiF 4 treated LMFP retained 89% of its capacity after 450 cycles from 2.5 to 4.25 V (vs Li/Li + ) at a rate of C/10. In comparison, the uncoated LMFP retained 87% of its initial capacity.…”

Section: Different Types Of Coatingsmentioning

confidence: 95%

Review—Surface Coatings for Cathodes in Lithium Ion Batteries: From Crystal Structures to Electrochemical Performance

Kaur

Gates

2022

J. Electrochem. Soc.

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Lithium ion batteries (LIBs) have dominated the energy industry due to their unmatchable properties, which include high energy density, compact design, and an ability to meet a number of required performance characteristics in comparison to other rechargeable systems. Both government agencies and industries are performing intensive research on Li-ion batteries for building an energy-sustainable economy. LIBs are single entities that consist of both organic and inorganic materials with features covering multiple length scales. Critical insights should be made for understanding the structure to property relationships and the behavior of components under the working condition of LIBs. Cathodes tend to react with the electrolytes and, hence, to undergo surface modifications accompanied by degradation. These side-reactions result in an erosion of battery performance, thereby causing a reduced battery life and power capacity. Recently, techniques for preparing surface coatings on cathode materials have been widely implemented as a measure to improve their stability, to enhance their electrochemical performance. This review will cover different types of surface coatings for cathode materials, as well as a comparison of the changes in electrochemical performance between those materials with and without an applied coating.

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Section: Different Types Of Coatingsmentioning

confidence: 95%

Review—Surface Coatings for Cathodes in Lithium Ion Batteries: From Crystal Structures to Electrochemical Performance

Kaur

Gates

2022

J. Electrochem. Soc.

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“…However, LiPF 6 can decompose into lithium fluoride (LiF) and phosphorus pentafluoride (PF 5 ) at about 4.5 V, and the formed PF 5 can react easily with trace H 2 O to form HF. The dissolution of transition‐metal elements from an LFMP cathode can be catalyzed by the generated HF, which leads to destruction of the protective film and further decomposition of the electrolyte . That is, to obtain a perfect performance from the LiFe 0.6 Mn 0.4 PO 4 material, decomposition of the electrolyte and the dissolution of transition metals related to the water‐containing environment should be restrained.…”

Section: Introductionmentioning

confidence: 99%

Compatibility between Lithium Bis(oxalate)borate‐Based Electrolytes and a LiFe_0.6Mn_0.4PO₄/C Cathode for Lithium‐Ion Batteries

Zhao

Tang

et al. 2016

Energy Tech

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The lithium transition‐metal phosphate LiFe0.6Mn0.4PO4 has two operating potentials, 3.5 V and 4.1 V, which is favorable for increasing the energy and power densities of lithium‐ion batteries (LIBs). To study the compatibility between LiFe0.6Mn0.4PO4 and electrolytes, lithium bis(oxalate)borate (LiBOB) is chosen as the lithium salt, based upon ethylene carbonate (EC), dimethyl carbonate (DMC), and dimethyl sulfite (DMS) as the supporting electrolyte solvents. The electrochemical performances of lithium hexafluorophosphate (LiPF6)‐based and LiBOB‐based electrolytes are compared. The combination of LiBOB and DMS can facilitate the formation of an effective passivation film. In addition, LiBOB‐EC/DMS electrolyte exhibits better cycle and rate performance. The results suggest that LiBOB‐EC/DMS electrolyte has good compatibility with LiFe0.6Mn0.4PO4, which makes it an attractive electrolyte for rechargeable LIBs based upon LiFe0.6Mn0.4PO4 cathodes.

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Recent advances of metal phosphates-based electrodes for high-performance metal ion batteries

Cheng

Zhao

Yang

et al. 2021

Energy Storage Materials

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Improvement in hydrophobicity of olivine lithium manganese iron phosphate cathodes by SiF4 treatment for lithium-ion batteries

Cited by 5 publications

References 32 publications

Review—Surface Coatings for Cathodes in Lithium Ion Batteries: From Crystal Structures to Electrochemical Performance

Review—Surface Coatings for Cathodes in Lithium Ion Batteries: From Crystal Structures to Electrochemical Performance

Compatibility between Lithium Bis(oxalate)borate‐Based Electrolytes and a LiFe_0.6Mn_0.4PO₄/C Cathode for Lithium‐Ion Batteries

Recent advances of metal phosphates-based electrodes for high-performance metal ion batteries

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Improvement in hydrophobicity of olivine lithium manganese iron phosphate cathodes by SiF4 treatment for lithium-ion batteries

Cited by 5 publications

References 32 publications

Review—Surface Coatings for Cathodes in Lithium Ion Batteries: From Crystal Structures to Electrochemical Performance

Review—Surface Coatings for Cathodes in Lithium Ion Batteries: From Crystal Structures to Electrochemical Performance

Compatibility between Lithium Bis(oxalate)borate‐Based Electrolytes and a LiFe0.6Mn0.4PO4/C Cathode for Lithium‐Ion Batteries

Recent advances of metal phosphates-based electrodes for high-performance metal ion batteries

Contact Info

Product

Resources

About

Compatibility between Lithium Bis(oxalate)borate‐Based Electrolytes and a LiFe_0.6Mn_0.4PO₄/C Cathode for Lithium‐Ion Batteries