Synthesis and characterization of LiAlyCo1−yO2 and LiAlyNi1−yO2

Jang, Young‐Il; Huang, Biying; Wang, Haifeng; Maskaly, Garry R.; Ceder, Gerbrand; Sadoway, Donald R.; Chiang, Yet‐Ming; Liu, Hui; Tamura, Hirokazu

doi:10.1016/s0378-7753(99)00104-4

Cited by 79 publications

(65 citation statements)

References 18 publications

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“…Most research related to Al-doped LiNiO 2 (11)(12)(13)(14) has focused on electrochemistry, synthesis condition and/or structure of LiNiO 2 . The formation mechanism and reaction kinetics of LiNiO 2 were seldom discussed.…”

Section: Introductionmentioning

confidence: 99%

Effect of Al Addition on Formation of Layer-Structured LiNiO2

Lin

Fung

Hon

et al. 2002

Journal of Solid State Chemistry

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Section: Introductionmentioning

confidence: 99%

Effect of Al Addition on Formation of Layer-Structured LiNiO2

Lin

Fung

Hon

et al. 2002

Journal of Solid State Chemistry

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“…[100] However, many studies have been carried out to substitute Co with Al or Mg to form a solid solution and the capacity fading was still significant during cycling and the structural stability was not improved obviously. [102,103] We developed a simple co-precipitation method to coat Al 2 O 3 or MgO on commercial LiCoO 2 (Nippon Chemical Industry) and nano-LiCoO 2 in 2002. [104][105][106] As shown in Figure 13a, Figure 13b shows the effect of an Al 2 O 3 coating on improving the cyclic performance.…”

mentioning

confidence: 99%

Research on Advanced Materials for Li‐ion Batteries

et al. 2009

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In order to address power and energy demands of mobile electronics and electric cars, Li‐ion technology is urgently being optimized by using alternative materials. This article presents a review of our recent progress dedicated to the anode and cathode materials that have the potential to fulfil the crucial factors of cost, safety, lifetime, durability, power density, and energy density. Nanostructured inorganic compounds have been extensively investigated. Size effects revealed in the storage of lithium through micropores (hard carbon spheres), alloys (Si, SnSb), and conversion reactions (Cr2O3, MnO) are studied. The formation of nano/micro core–shell, dispersed composite, and surface pinning structures can improve their cycling performance. Surface coating on LiCoO2 and LiMn2O4 was found to be an effective way to enhance their thermal and chemical stability and the mechanisms are discussed. Theoretical simulations and experiments on LiFePO4 reveal that alkali metal ions and nitrogen doping into the LiFePO4 lattice are possible approaches to increase its electronic conductivity and does not block transport of lithium ion along the 1D channel.

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“…Hence, LiNiO 2 has a rhombohedral structure with trigonal symmetry (space group: m R3 ) comprising of two interpenetrating close packed FCC sub-lattices: one consists of oxygen anions, and the other consists of Li and Ni cations on alternating (111) planes [8]. Hence, it is thought that the solid state reaction process is quite effective to synthesize multi element-containing oxides and carbonates [9][10]. we calculated the crystallite size at different orientations for these materials from their line width in the XRD pattern by using Debye-Scherrer's formula: D=0.9λ/βCosθ, where λ is the wavelength of the X-ray used (1.54 Å), β is the full width half maximum in radians, θ is Bragg's angle.…”

Section: X-ray Diffraction Study:-mentioning

confidence: 99%

Effect of Magnesium Doping on the Structural Stability of Layered Linio2 Based Cathode Materials.

Murali¹,

Margarette²,

Sailaja³

et al. 2016

IJAR

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In rechargeable lithium batteries, nickel is employed in the form of oxide in which lithium ions are inserted into its crystal structure to form layered nickel oxide i.e., LiNiO 2 . The objective of this paper is to understand the effects of substitution of magnesium on the structural stability in the layered intercalation compounds. The compounds LiNiO 2 and LiNi 0.75 Mg 0.25 O 2 are synthesized by a solid state reaction method under the flow of air at 800 °C for 24 hours. The influence of doping Mg on structure, morphology and bonding nature of cathode materials are investigated systematically. From the x-ray diffraction (XRD) data, the intensity versus diffraction angle peak indicated that the compound crystallized as a rhombohedral system (space group m R3 ). The lattice constants and crystallite sizes were computed from XRD data. The particle morphology of the compound was observed using a field effect scanning electron microscope (FESEM). The FT-IR spectroscopic data of LiNiO 2 revealed the local structure of the oxide lattice constituted by LiO 6 and NiO 6 octahedra.Copy Right, IJAR, 2016,. All rights reserved. …………………………………………………………………………………………………….... Introduction:-Over the last two decades, intensive research is going on to improve the overall performance of lithium ion batteries. The main focus has been in search of the alternative cathode materials, apart from the regular components of battery mechanisms. For the cathode materials, every system has its own advantages and disadvantages. The LiCoO 2 is a well known cathode material for rechargeable lithium ion batteries [1]. However, due to its high cost and toxicity, there has been a continuous demand during the last few years to develop alternative cathode materials which would be environmentally friendly and cost effective [2][3]. Metal based LiNiO 2 , LiMn 2 O 4 and olivine type LiFePO 4 are promising materials for future to substitute LiCoO2. The LiNiO 2 is cheaper and less toxic compared to LiCoO 2 [4]. It delivers a larger reversible capacity with a comparable life-cycle. It is considered to be one of the best cathode materials for Lithium ion cells. The electrochemical properties of cathodes based on LiNiO 2 are good. The difficulty in synthesizing stoichiometric LiNiO 2 is also due to the loss of lithium from the host structure during high temperature calcinations because of the high vapor pressure of lithium [5][6], thus leading to the formation of nonstoichiometric structure. However, its synthesis requires special care to obtain good and reproducible performances.

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Synthesis and characterization of LiAlyCo1−yO2 and LiAlyNi1−yO2

Cited by 79 publications

References 18 publications

Effect of Al Addition on Formation of Layer-Structured LiNiO2

Effect of Al Addition on Formation of Layer-Structured LiNiO2

Research on Advanced Materials for Li‐ion Batteries

Effect of Magnesium Doping on the Structural Stability of Layered Linio2 Based Cathode Materials.

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