Electrochemical Behavior of LiM[sub 0.25]Ni[sub 0.25]Mn[sub 1.5]O[sub 4] as 5 V Cathode Materials for Lithium Rechargeable Batteries

Rajakumar, S.; Thirunakaran, R.; Sivashanmugam, A.; Yamaki, Jun‐ichi; Gopukumar, S.

doi:10.1149/1.3071364

Cited by 15 publications

(6 citation statements)

References 36 publications

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“…7,8 Several papers reported that single-/multidoped cubic spinels and layered compounds were charged up to 5 V to increase the capacity and reduce the capacity fade upon repeated cycling. [9][10][11] The Ni substitution leads to higher discharge plateaus around 5 V and, in turn, to a high power density. The structural disintegration upon cycling can be prevented by substituting metal with a higher bonding energy.…”

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confidence: 99%

Synthesis, Characterization, and Electrochemical Properties of LiCr[sub x]Ni[sub y]Mn[sub 2−x−y]O[sub 4] Spinels as Cathode Material for 5 V Lithium Battery

Rajakumar

Thirunakaran

Sivashanmugam

et al. 2010

J. Electrochem. Soc.

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Sol–gel assisted spinel LiCrxNiyMn2−x−ynormalO4 ( 0≤x≤0.4 and 0≤y≤0.4 ) has been synthesized. The thermal study of the precursor was carried out by thermogravimetric and differential thermal analyses. Furthermore, the material has been subjected to X-ray diffraction, scanning electron microscopy, Fourier transform IR spectroscopy analysis, X-ray photoelectron spectroscopy, cyclic voltammetry studies, and electrochemical charge–discharge studies. The X-ray diffraction of LiCrxNiyMn2−x−ynormalO4 matches well with the Joint Committee on Powder Diffraction Standard card no. 35-782, confirming the formation of a single-phase spinel. Charge–discharge studies were carried out between 3 and 5 V to understand the electrochemical behavior of the undoped and doped spinels. LiCr0.25Ni0.25Mn1.5normalO4 calcined at 850°C possesses a particle size of around 70 nm and exhibits an initial discharge capacity of 105mAhnormalg−1 stabilizing at 98mAhnormalg−1 over the investigated 20 cycles. However, maleic acid derived LiCr0.25Ni0.25Mn1.5normalO4 delivers a stable higher discharge capacity of ∼115mAhnormalg−1 over the investigated 20 cycles and is a promising 5 V cathode material.

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confidence: 99%

Synthesis, Characterization, and Electrochemical Properties of LiCr[sub x]Ni[sub y]Mn[sub 2−x−y]O[sub 4] Spinels as Cathode Material for 5 V Lithium Battery

Rajakumar

Thirunakaran

Sivashanmugam

et al. 2010

J. Electrochem. Soc.

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“…Similarly, shifting the oxygen partial pressure either to oxidizing or reducing conditions may promote the phase decomposition and corresponding negative impact on the performance. This methodology was implemented for several low-temperature applications, including magnetic nanoparticles, 15,16 catalysts 17 and cathode materials for lithium rechargeable batteries (e.g., 18 ). in oxide melts under anodic polarization, while their cost is not affordable for mass production.…”

Section: Introductionmentioning

confidence: 99%

“…9,14 The approach to design the spinel composition through various simultaneous co-substitutions may have a great potential for many applications, by introducing complex magnetic interactions, specic changes in electronic band structure and redox states/coordination of the constituent cations, promoted by various mutual effects. This methodology was implemented for several low-temperature applications, including magnetic nanoparticles, 15,16 catalysts 17 and cathode materials for lithium rechargeable batteries (e.g., 18 ). In the present work, this approach was assessed assuming the high-temperature applications of the ferrospinels, containing various cations, in the form of bulk materials, eventually targeting the development of suitable anodes for pyroelectrolysis.…”

Section: Introductionmentioning

confidence: 99%

Guidelines to design multicomponent ferrospinels for high-temperature applications

et al. 2016

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This work explores the possibilities to design magnetite-based spinels through multiple simultaneous co-substitutions with transition metal cations, with emphasis on redox behavior and electronic transport. For the first time this approach was assesses for high-temperature applications, being of particular interest for the development of consumable anodes for pyroelectrolysis, an alternative carbon-lean steelmaking process. A Taguchi plan was used to assess the impact of the concentration of substituting chromium, titanium, manganese and nickel cations on the lattice parameter and electrical conductivity of the multicomponent ferrospinels. The results revealed comparable decrease in the electrical conductivity, provided by Cr 3+ , Mn 3+/2+ and Ni 2+ cations. The impact of Ti 4+ was found to be less negative, contributing by the formation of Fe 2+ cations and increased hopping probability. Strongest structural impacts, exerted by manganese cations, are likely to affect the mobility of polarons, as revealed by the analysis of correlation factors for combined effects. Ferrospinels, containing various transition metal cations, are more susceptible to oxidation and phase decomposition, which often result in sudden conductivity drop and significant dimensional changes in ceramics. The observed trends for redox behavior suggest that the potential applications of multicomponent ferrospinels in oxidizing conditions are limited at 1000-1400 K due to insufficient stability, while higher temperature applications, requiring significant electronic conductivity, are rather suitable.

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“…5 Another one of the transition metal oxides LiMn 2 O 4 has a high voltage, but it suffers from significant capacity fading in the 3 V range because of the Jahn-Teller distortion of MnO 6 octahedra. 6,7 Therefore, researchers focus their studies on LiMnO 2 cathode materials, which have several advantages over LiCoO 2 and LiNiO 2 , namely lower toxicity, lower cost and ready availability of Mn. 8 However, it has significant disadvantages in its crystallographic transformation to the spinel structure after several charge/discharge cycles.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of high voltage (4.9 V) cycling LiNixCoyMn1−x−yO2 cathode materials for lithium rechargeable batteries

Nithya

Kumari

Gopukumar

2011

Phys. Chem. Chem. Phys.

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Layered mixed oxides LiNi(x)Co(y)Mn(1-x-y)O(2) (0 ≤x, y≤ 0.5) synthesized by a sol-gel method using tartaric acid as a chelating agent, and their structural and electrochemical properties are investigated by thermal analysis, XRD, SEM, FT-IR and XPS studies. The higher composition of Co leads to cation disorder and shrinks the cell volume. Electrochemical behaviour of the synthesized materials is evaluated by Galvanostatic charge/discharge studies using 2016 type coin cells. The cycling studies are carried out in the voltage limits of 2.7 to 4.6, 4.8 and 4.9 V at current rates of C/10 and C/5 respectively. The composition LiNi(0.4)Co(0.1)Mn(0.5)O(2) exhibits an average discharge capacity of 192 mA h g(-1) at the current density of 0.612 mA cm(-2) (C/5) in the voltage range of 2.7-4.9 V as compared to the discharge capacity of 155 and 175 mA h g(-1) in the potential range of 2.7-4.6 and 2.7-4.8 V over the 50 investigated cycles. The effect of higher charge voltage at 4.9 V on the electrochemical performance of LiNi(x)Co(y)Mn(1-x-y)O(2) oxide materials has not previously been reported.

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Electrochemical Behavior of LiM[sub 0.25]Ni[sub 0.25]Mn[sub 1.5]O[sub 4] as 5 V Cathode Materials for Lithium Rechargeable Batteries

Cited by 15 publications

References 36 publications

Synthesis, Characterization, and Electrochemical Properties of LiCr[sub x]Ni[sub y]Mn[sub 2−x−y]O[sub 4] Spinels as Cathode Material for 5 V Lithium Battery

Synthesis, Characterization, and Electrochemical Properties of LiCr[sub x]Ni[sub y]Mn[sub 2−x−y]O[sub 4] Spinels as Cathode Material for 5 V Lithium Battery

Guidelines to design multicomponent ferrospinels for high-temperature applications

Synthesis of high voltage (4.9 V) cycling LiNixCoyMn1−x−yO2 cathode materials for lithium rechargeable batteries

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