Adipic Acid Assisted Sol-Gel Synthesis of Li1+x(Mn0.4Ni0.4Fe0.2)1-xO2(0 &gt; x &gt; 0.3) as Cathode Materials for Lithium Ion Batteries

Karthikeyan, K.; Pandian, Amaresh Samuthira; Son, Ju-Nam; Kim, Shinho; Kim, Min‐Chul; Kim, Kwang‐Jin; Lee, Sol-Nip; Lee, Yun‐Sung

doi:10.5012/bkcs.2013.34.1.89

Cited by 4 publications

(2 citation statements)

References 34 publications

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“…The basic features of impedance spectrum are comparable with the data reported in the literature for cathode materials. 27,28 The impedance spectrum (Fig. 12a) was subjected to non-linear least square fit procedure 55 employing the electrical equivalent circuit shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

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Composite of Li-Rich Mn, Ni and Fe Oxides as Positive Electrode Materials for Li-Ion Battery

Penki

Duraisamy

Kishore

et al. 2016

J. Electrochem. Soc.

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A porous layered composite of Li 2 MnO 3 and LiMn 1/3 Ni 1/3 Fe 1/3 O 2 (composition: Li 1.2 Mn 0.53 Ni 0.13 Fe 0.13 O 2 ) is prepared by reverse microemulsion method employing tri-block co-polymer, F068 as a soft-polymer template. The Co-free composite is studied as a cathode material for Li-ion battery. Several samples are prepared by heating the precursor in the temperature range between 500 and 900 • C. The N 2 adsorption/desorption studies reveal that the product samples possess mesoporosity with broadly distributed pores around 15-50 nm diameter. Pore volume and surface area decrease by increasing the temperature of preparation. Charge-discharge, cycling and rate capability are investigated. The discharge capacity of the sample prepared at 900 • C is about 170 mAh g −1 at a specific current of 25 mA g −1 with a good cycling stability. A value of 140 mAh g −1 is obtained at the end of 50 charge-discharge cycles. Discharge capacity of 91 mAh g −1 is obtained at a specific current of 206 mA g −1 . A high rate capacity of the composite is attributed to its porous nature. Research activities on lithium-ion batteries have increased in the recent past because of their attractive energy density. [1][2][3] In an extended range of applications, they are successful in small sizes at present and anticipated to be useful in large sizes for applications such as electric vehicles. Although the energy density of the present Li-ion batteries is the greatest among rechargeable batteries, future requirements such as electric vehicle applications require still greater energy density. The next generation Li-ion batteries, thus, need novel electrode materials which can provide greater discharge capacity than the present materials. Compounds with a high atomic ratio of extractable lithium to transition metal are expected to provide high discharge capacity values. Li 2 MnO 3 belongs to this category of materials.4 Li 2 MnO 3 is a layered oxide similar to LiCoO 2 and its formula can also be presented as Li (Li 0.33 was reported at a specific current of 30 mA g −1 in the potential range between 1.5 and 4.8 V. 33,34 In addition to the high discharge capacity, an electrode material needs to possess high rate capability for the purpose of fast charge or/and discharge. Porous materials are expected to possess high rate capability because the electrolyte can creep into particles and enhance the contact area. 35 As a result, the material can withstand an enhanced specific current during charge-discharge cycling. Furthermore, the electrode material can tolerate volume expansion and contraction that may occur during charge-discharge processes. To the best of authors' knowledge, there are only few reports available on the synthesis of porous composites of Li 2 MnO 3 . A porous composite of Li 2 MnO 3 with nanoplate morphology was prepared via colloidal crystal template of poly(methyl methacrylate) beads. The porous composite was better in electrochemical properties in relation to the nonporous composite. 36,37 Investigations on high capa...

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Section: Resultsmentioning

confidence: 99%

“…26 Karthikeyan et al, prepared the Ni and Fe doped Li 2 MnO 3 via sol-gel method. [27][28][29][30][31] Li et al, reported that composition Li(Li 0.23 Mn 0.47 Fe 0.2 Ni 0.1 )O 2 prepared by citric acid assisted sol-gel method provided a stable capacity of 175 mAh g −1 . 32 Lian et al, studied the effect of Fe-doping in Li 2 MnO 3 :LiMn 0.5 Ni 0.5 O 2 .…”

mentioning

confidence: 99%

Composite of Li-Rich Mn, Ni and Fe Oxides as Positive Electrode Materials for Li-Ion Battery

Penki

Duraisamy

Kishore

et al. 2016

J. Electrochem. Soc.

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Binder‐ and Carbon‐free Porous Thick Tin Foil Electrode via a Spontaneous Electrochemical and Chemical Process

Mun

Ryu

2015

Bulletin Korean Chem Soc

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In this work, a porous Sn foil electrode that is free of binder and conducting agent is prepared for use in lithium ion batteries via a spontaneous method that consists of electrochemical lithiation followed by a chemical de‐lithiation process. In lithium ion battery, conventional Sn foil cannot electrochemically accommodate lithium ions despite the low current density of 50 mA/g used for cycling because of the high kinetic hindrances resulting from the poor diffusion of lithium between the electrolyte and the electrode. In this work, the surface morphology of Sn foil is modified to be porous to ensure the lithium diffusion pathway from the electrolyte to the electrode using a facile method that does not require special electrochemical equipment. The obtained porous Sn foil exhibits a voltage plateau that corresponds to Li/Sn alloying and a reversible specific capacity that exceeds 300 mAh/g. The crystal structures, surface morphologies, and electrochemical characteristics of the prepared samples are investigated using X‐ray diffraction, scanning electron microscopy, and electrochemical analyses.

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In situ generated spinel-phase skin on layered Li-rich short nanorods as cathode materials for lithium-ion batteries

Zhao

et al. 2019

J Mater Sci

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Adipic Acid Assisted Sol-Gel Synthesis of Li_1+x(Mn_0.4Ni_0.4Fe_0.2)_1-xO₂(0 > x > 0.3) as Cathode Materials for Lithium Ion Batteries

Cited by 4 publications

References 34 publications

Composite of Li-Rich Mn, Ni and Fe Oxides as Positive Electrode Materials for Li-Ion Battery

Composite of Li-Rich Mn, Ni and Fe Oxides as Positive Electrode Materials for Li-Ion Battery

Binder‐ and Carbon‐free Porous Thick Tin Foil Electrode via a Spontaneous Electrochemical and Chemical Process

In situ generated spinel-phase skin on layered Li-rich short nanorods as cathode materials for lithium-ion batteries

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