Synthesis of LiCoO2 from cobalt—organic acid complexes and its electrode behaviour in a lithium secondary battery

Yoshio, Masaki; Tanaka, Hirofumi; Tominaga, Kenji; Noguchi, Hideyuki

doi:10.1016/0378-7753(92)80023-5

Cited by 74 publications

(30 citation statements)

References 9 publications

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“…The voltage profiles show that the discharge capacity was improved from 79.8 mA·h·g −1 in the sample calcined at 400 • C to 131 mA·h·g −1 in the one at 900 • C with increasing calcination temperature. This result is in good agreement with our XRD results, indicating that high temperature calcination induces a high degree of cation ordering [31,36]. It has been reported that the Li ion inserts more efficiently for a sample with a lower degree of cation ordering in a textured electrode structure thanks to a greater number of electrochemical active sites and a shorter diffusion length than a sample with a higher degree of cation ordering [30,35,37].…”

Section: Electrochemical Characterizationsupporting

confidence: 92%

“…Note that the (104) peak intensity dramatically increases with temperature, indicating high crystallinity in the c-axis direction. The calculated degree of cation mixing with the ratio of the peak intensity (003) to (104) was 2.17 at 900 • C, 2.04 at 700 • C, and 1.85 at 400 • C [31][32][33]. It could be expected that LiCoO 2 calcined at a high temperature of 900 • C will have good electrochemical properties, which will be discussed in the next section.…”

Section: Synthesis Of Licoo 2 Powder From Co-oxalatementioning

confidence: 94%

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High-Yield One-Pot Recovery and Characterization of Nanostructured Cobalt Oxalate from Spent Lithium-Ion Batteries and Successive Re-Synthesis of LiCoO2

Park

Lim

Moon

et al. 2017

Metals

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A complete recycling process for the cathode material of spent lithium-ion batteries is demonstrated with a simple two-step process comprised of one-pot cobalt recovery to nanostructured materials and single step synthesis of LiCoO 2 . For the facile and efficient recovery of cobalt, we employ malic acid as a leaching agent and oxalic acid as a precipitating agent, resulting in nanostructured cobalt oxalate. X-ray diffraction and Fourier transform infrared spectroscopy (FT-IR) analysis clearly show that cobalt species are simultaneously leached and precipitated as cobalt oxalate with a high yield of 99.28%, and this material can then be used as a reactant for the synthesis of LiCoO 2 for use as a cathode material. In addition to its advantages in simplifying the process, the proposed method allows for not only enhancing the efficiency of cobalt recovery, but also enabling reaction without a reducing agent, H 2 O 2 . Through successive single-step reaction of the obtained cobalt oxalate without any purification process, LiCoO 2 is also successfully synthesized. The effect of the annealing temperature during synthesis on the nanostructure and charge-discharge properties is also investigated. Half-cell tests with recycled LiCoO 2 exhibit a high discharge capacity (131 mA·h·g −1 ) and 93% charge-discharge efficiency.

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Section: Electrochemical Characterizationsupporting

confidence: 92%

Section: Synthesis Of Licoo 2 Powder From Co-oxalatementioning

confidence: 94%

High-Yield One-Pot Recovery and Characterization of Nanostructured Cobalt Oxalate from Spent Lithium-Ion Batteries and Successive Re-Synthesis of LiCoO2

Park

Lim

Moon

et al. 2017

Metals

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“…1 Layered host materials such as LiCoO2 cathodes are widely used for commercial lithium-ion batteries as they exhibit reversible lithium intercalations. [2][3] There is increasing demand for alternative materials, and various materials with different structures were widely investigated. [4][5][6][7][8] LiNi1-xMyO2 (M = Co, Mn, Al, Mg, etc.)…”

Section: Introductionmentioning

confidence: 99%

Structures and Electrochemical Properties of LiNi_0.5-xCo_2x}Mn_0.5-xO₂as Cathode Materials for Lithium-ion Batteries

Choi¹,

Kim²,

Jeong

et al. 2009

Bulletin of the Korean Chemical Society

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LiNi0.5-xCo2xMn0.5-xO2 (x = 0, 0.1, 1/6, 1.2, 0.3) were synthesized by the solid-state reaction method. The crystal structure was analyzed by X-ray powder diffraction and Rietveld refinement. LiNi0.5-xCo2xMn0.5-xO2 samples give single phases of hexagonal layered structures with a space group of R-3m for x = 0.1, 1/6, 0.2, and 0.3. The lattice constants of a and c-axis were decreased with the increase in Co contents in samples. The thickness of MO2 slab was decreased and inter-slab distance was increased with the increase in Co contents in LiNi0.5-xCo2xMn0.5-xO2. According to XPS analysis, the valence states of Mn, Co, and Ni in the sample are mainly +4, +3, and +3, respectively. The discharge capacity of 202 mAh/g at 0.1C-rate in the potential range of 4.7 -3.0 V was obtained in LiNi0.3Co0.4 Mn0.3O2 sample, and LiNi0.4Co0.2Mn0.4O2 gives excellent cycle performance in the same potential range.

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“…This was further motivated by the high cost, chemical hazards, and the environmental impact associated with cobalt. The preparation of LiCoO 2 was done by means of solid state reaction [8][9][10], sol-gel technique [11,12], ultrasonic spray pyrolysis process [13], combustion synthesis [14,15], co-precipitation method [16], molten salt synthesis [17], freeze-drying method [18], complex formation method [19], hydrothermal synthesis [20], mechanochemical, and microwave synthesis [21,22] [14,18,24], only 50-55% of its theoretical capacity. In order to enhance the ionic conductivity and cycling performance of the cathode, some approaches such as carbon coating [11,25] …”

Section: Licoomentioning

confidence: 99%

Review on Synthesis, Characterizations, and Electrochemical Properties of Cathode Materials for Lithium Ion Batteries

Bensalah¹,

Dawood²

2016

J Material Sci Eng

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The development of cutting-edge cathode materials is a challenging research topic aiming to improve the energy and power densities of lithium ion batteries (LIB) to cover the increasing demands for energy storage devices. Therefore, highly needed further improvements in the performance characteristics of Li-ion batteries are largely dependent on our ability to develop novel materials with greatly improved Li ion storage capacities. Three different types of cathode materials including intercalation, alloying and conversion materials are reviewed in this paper in order to orientate our researches towards highly performant LIBs batteries. This includes characteristics of different cathode materials and approaches for improving their performances.

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Synthesis of LiCoO2 from cobalt—organic acid complexes and its electrode behaviour in a lithium secondary battery

Cited by 74 publications

References 9 publications

High-Yield One-Pot Recovery and Characterization of Nanostructured Cobalt Oxalate from Spent Lithium-Ion Batteries and Successive Re-Synthesis of LiCoO2

High-Yield One-Pot Recovery and Characterization of Nanostructured Cobalt Oxalate from Spent Lithium-Ion Batteries and Successive Re-Synthesis of LiCoO2

Structures and Electrochemical Properties of LiNi_0.5-xCo_2x}Mn_0.5-xO₂as Cathode Materials for Lithium-ion Batteries

Review on Synthesis, Characterizations, and Electrochemical Properties of Cathode Materials for Lithium Ion Batteries

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Synthesis of LiCoO2 from cobalt—organic acid complexes and its electrode behaviour in a lithium secondary battery

Cited by 74 publications

References 9 publications

High-Yield One-Pot Recovery and Characterization of Nanostructured Cobalt Oxalate from Spent Lithium-Ion Batteries and Successive Re-Synthesis of LiCoO2

High-Yield One-Pot Recovery and Characterization of Nanostructured Cobalt Oxalate from Spent Lithium-Ion Batteries and Successive Re-Synthesis of LiCoO2

Structures and Electrochemical Properties of LiNi0.5-xCo2x}Mn0.5-xO2as Cathode Materials for Lithium-ion Batteries

Review on Synthesis, Characterizations, and Electrochemical Properties of Cathode Materials for Lithium Ion Batteries

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Structures and Electrochemical Properties of LiNi_0.5-xCo_2x}Mn_0.5-xO₂as Cathode Materials for Lithium-ion Batteries