Electrochemical performanceof LiMn<sub>2</sub>O<sub>4</sub> with varying thickness of cathode sheet

Priyono, Slamet; Hardiyani, Siti; Syarif, Nirwan; Subhan, Achmad; Suhandi, Andi

doi:10.1088/1742-6596/1191/1/012022

Cited by 7 publications

(6 citation statements)

References 8 publications

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“…The reduced R inter values implies the enhanced electrical conductivity. 62,63] Thus, an adequate amount of Fe dopant in the LFMO cathode may increase the electronic conductivity, decreasing the interfacial resistance. [56] On the other hand, excessive doping of stable Fe may produce an excessive number of oxygen vacancies and might not easily deinsert Li + ions into LFMO-0.4, increasing R inter .…”

Section: Resultsmentioning

confidence: 99%

Enhanced Cycling Performance of Fe‐doped LiMn₂O₄ Truncated Octahedral Cathodes for Li‐Ion Batteries

et al. 2022

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LiMn 2 O 4 (LMO) with a spinel crystal structure is a promising cathode for next-generation Li-ion batteries (LIBs), owing to its low cost and high operating voltage of ~4.4 V. However, due to the Jahn-Teller distortion effect, LMO typically exhibits deteriorated cycling performance, owing to the dissolution of Mn into a liquid electrolyte. In this study, Fe-doped truncated octahedral LMO cathodes with different concentrations were synthesized to improve LMO stability in LIBs. The Fe-doped truncated octahedral LMO was characterized using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. The Li + ion diffusion coefficients of the cathodes were measured using electrochemical impedance spectroscopy and the galvanostatic intermittent titration technique. Compared to the truncated octahedral undoped LMO, the Fe-doped LMO cathode with an appropriate amount of dopant exhibited the best LIB performance, with the highest Li + ion diffusivity resulting from the increased oxygen vacancy as the path of Li + ion.

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Section: Resultsmentioning

confidence: 99%

Enhanced Cycling Performance of Fe‐doped LiMn₂O₄ Truncated Octahedral Cathodes for Li‐Ion Batteries

et al. 2022

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“…These materials have different trade-offs between energy density, cycle life, and safety and are used in different types of applications based on their specific properties. Among them, the unique 3D-tunnel-structured spinel LMO has been considered to be the most promising alternative cathode material for the new generation of lithium-ion batteries owing to its high capacity, good rate performance, non-toxicity, and ease of manufacturing [6]. In addition, LMO is relatively inexpensive and abundant, making it attractive for use in many applications.…”

Section: Introductionmentioning

confidence: 99%

Unraveling the Mechanism and Practical Implications of the Sol-Gel Synthesis of Spinel LiMn2O4 as a Cathode Material for Li-Ion Batteries: Critical Effects of Cation Distribution at the Matrix Level

et al. 2023

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Spinel LiMn2O4 (LMO) is a state-of-the-art cathode material for Li-ion batteries. However, the operating voltage and battery life of spinel LMO needs to be improved for application in various modern technologies. Modifying the composition of the spinel LMO material alters its electronic structure, thereby increasing its operating voltage. Additionally, modifying the microstructure of the spinel LMO by controlling the size and distribution of the particles can improve its electrochemical properties. In this study, we elucidate the sol-gel synthesis mechanisms of two common types of sol-gels (modified and unmodified metal complexes)—chelate gel and organic polymeric gel—and investigate their structural and morphological properties and electrochemical performances. This study highlights that uniform distribution of cations during sol-gel formation is important for the growth of LMO crystals. Furthermore, a homogeneous multicomponent sol-gel, necessary to ensure that no conflicting morphologies and structures would degrade the electrochemical performances, can be obtained when the sol-gel has a polymer-like structure and uniformly bound ions; this can be achieved by using additional multifunctional reagents, namely cross-linkers.

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“…5 The conductivities measured using the thin-film electrode and electrolyte are 1.1211 © 10 ¹5 to 5.3922 © 10 ¹5 S/cm. 6 As described above, there are various methods for measuring conductivity. In view of this, one of the factors that change the electrical properties of lithium manganese oxide is considered to be the material that comes into contact as an electrode.…”

Section: Introductionmentioning

confidence: 99%

Reduction of Electrical Resistance of Active Materials for Lithium-ion Secondary Batteries by Making Contact with Carbon Materials

et al. 2022

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In the active material of a lithium-ion secondary battery, electrons and lithium-ions react at the same time. The fact that the active material can transfer electrons with a small reaction overvoltage leads to a reduction in the internal resistance of the battery. Therefore, when the electrical resistance was measured by changing the electrode material in contact with the active material, it was found that the electrical resistance of the active material was reduced depend on the carbon materials make contact with the active material.

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Electrochemical performanceof LiMn₂O₄ with varying thickness of cathode sheet

Cited by 7 publications

References 8 publications

Enhanced Cycling Performance of Fe‐doped LiMn₂O₄ Truncated Octahedral Cathodes for Li‐Ion Batteries

Enhanced Cycling Performance of Fe‐doped LiMn₂O₄ Truncated Octahedral Cathodes for Li‐Ion Batteries

Unraveling the Mechanism and Practical Implications of the Sol-Gel Synthesis of Spinel LiMn2O4 as a Cathode Material for Li-Ion Batteries: Critical Effects of Cation Distribution at the Matrix Level

Reduction of Electrical Resistance of Active Materials for Lithium-ion Secondary Batteries by Making Contact with Carbon Materials

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Electrochemical performanceof LiMn2O4 with varying thickness of cathode sheet

Cited by 7 publications

References 8 publications

Enhanced Cycling Performance of Fe‐doped LiMn2O4 Truncated Octahedral Cathodes for Li‐Ion Batteries

Enhanced Cycling Performance of Fe‐doped LiMn2O4 Truncated Octahedral Cathodes for Li‐Ion Batteries

Unraveling the Mechanism and Practical Implications of the Sol-Gel Synthesis of Spinel LiMn2O4 as a Cathode Material for Li-Ion Batteries: Critical Effects of Cation Distribution at the Matrix Level

Reduction of Electrical Resistance of Active Materials for Lithium-ion Secondary Batteries by Making Contact with Carbon Materials

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Product

Resources

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Electrochemical performanceof LiMn₂O₄ with varying thickness of cathode sheet

Enhanced Cycling Performance of Fe‐doped LiMn₂O₄ Truncated Octahedral Cathodes for Li‐Ion Batteries

Enhanced Cycling Performance of Fe‐doped LiMn₂O₄ Truncated Octahedral Cathodes for Li‐Ion Batteries