Study on the Optimum Conditions for Synthesizing a Cathode Active Material Precursor in Li-Ion Batteries Using a Taylor Reactor

Han, Deokhyun; Park, Iljeong; Kim, Minjun; Kim, Daeweon; Jung, Hang-Chul

doi:10.3365/kjmm.2019.57.6.360

Cited by 7 publications

(4 citation statements)

References 11 publications

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“…As the NCm solution was introduced into the initial reactor, a concentration gradient of the solution was generated inside the reactor, a crystalline seed was generated in the low concentration section, and the growth of particles appeared as the reaction time increased. As the reaction time increases, the reaction concentration is stabilized by flow, which seems to increase the size and dispersibility of the particles [3,5] particle growth can also be observed in the microstructure analysis results in Fig. 4.…”

Section: Resultsmentioning

confidence: 75%

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Archives of Metallurgy and Materials

Jung,

Han,

Kim

et al. 2021

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SyntheSiS of the nickel-cobalt-ManganeSe cathode Material USing recycled nickel aS PrecUrSorS froM Secondary batterieSAs the amount of high-capacity secondary battery waste gradually increased, waste secondary batteries for industry (highspeed train & HeV) were recycled and materialization studies were carried out. The precipitation experiment was carried out with various conditions in the synthesis of LiNi 0.6 Co 0.2 mn 0.2 o 2 material using a Taylor reactor. The raw material used in this study was a leaching solution generated from waste nickel-based batteries.The nickel-cobalt-manganese (NCm) precursor was prepared by the Taylor reaction process. material analysis indicated that spherical powder was formed, and the particle size of the precursor was decreased as the reaction speed was increased during the preparation of the NCm. The spherical NCm powder having a particle size of 10 µm was synthesized using reaction conditions, stirring speed of 1000 rpm for 24 hours. The NCm precursor prepared by the Taylor reaction was synthesized as a cathode material for the LiB, and then a coin-cell was manufactured to perform the capacity evaluation.

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Section: Resultsmentioning

confidence: 75%

“…one of the problems in the synthesis of NCm material is that productivity is low due to the long reaction time [3].…”

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

Jung,

Han,

Kim

et al. 2021

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“…In this study, we examined the differences of commercial polypropylene (PP), ceramic (Boehmite) coated PP (C-PP), and polyimide (PI) separators from an electrochemical perspective. For the battery model, the half-cell using lithium nickel manganese cobalt oxides (NMC), which is the most used in the current industry, and the full-cell using graphite as the opposite electrode were adopted [15]. We conducted rate capability tests at rates from 0.1 to 5 C, focusing on the differences in each C rate section.…”

Section: Introductionmentioning

confidence: 99%

Ceramic-Coated Separator to Enhance Cycling Performance of Lithium-ion Batteries at High Current Density

Cho¹,

Balamurugan²,

Im³

et al. 2021

Korean J. Met. Mater.

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Given the global demand for green energy, the battery industry is positioned to be an important future technology. Lithium-ion batteries (LIBs), which are the most widely used battery in the market, are the focus of various research and development efforts, from materials to systems, that seek to improve their performance. The separator is one of the core materials in LIBs and is a significant factor in the lifespan of high-performance batteries. To improve the performance of present LIBs, electrochemical testing and related surface analyses of the separator is essential. In this paper, we prepared a ceramic (Boehmite, γ-AlOOH) coated polypropylene separator and a porous polyimide separator to compare their electrochemical properties with a commercialized polypropylene (PP) separator. The prepared separators were assembled into nickelmanganese-cobalt (NMC) cathode half-cell and full-cell lithium-ion batteries. Their cycling performances were evaluated using differential capacity and electrochemical impedance spectroscopy with ethylene carbonate:dimethylcarbonate (EC:DMC) electrolyte. The ceramic coated polypropylene separator exhibited the best cycle performance at a high 5 C rate, with high ionic conductivity and less resistive solid electrolyte interphase. Also, it was confirmed that a separator solid electrolyte interface (SSEI) layer formed on the separator with cycle repetition, and it was also confirmed that this phenomenon determined the cycle life of the battery depending on the electrolyte.

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“…The demand for lithium-ion batteries (LIBs) is increasing for applications in electric vehicles (EVs), portable electronic devices, utility power grids, etc., because they provide high energy and power densities, a long stable cycle life, and good safety performance [1][2][3][4]. LIBs typically require electrode materials with high theoretical capacities, good conductivity, and high structural stability.…”

Section: Introductionmentioning

confidence: 99%

Nano Silicon Composite with Gelatin/Melamine Derived N-doped Carbon as an Efficient Anode Material for Li-ion Batteries

Nulu¹

2021

Korean J. Met. Mater.

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Silicon (Si) has a high theoretical capacity and low working potential vs. Li/Li+, and has been investigated as the most capable negative electrode material for lithium-ion batteries (LIBs). However, Si undergoes significant volume changes during the Li+ alloying/ dealloying processes, leading to unstable cycle life and limiting its practical applicability in anodes. Introducing carbon into the Si anodes can effectively address the Si drawbacks, while providing advantages of improved conductivity and structural stability. In this study we choose gelatin/ melamine combination as an eco-friendly and cost-effective source for nitrogendoped carbon to make a Si composite. The prepared composite was studied as an anode material for LIBs, and it delivered excellent cyclability with 2175 mAh g-1 capacity after 50 cycles with 86% capacity retention at 200 mA g-1. The composite exhibited superior rate capability and improved Li+ diffusion properties compared with bare Si nanoparticles (Si NP). The significant enhancement could be attributed to the structural stability and conductivity provided by the nitrogen-doped carbon matrix. This work promotes emerging batteries with low-cost materials as a promising solution for increasing energy storage requirements.

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Study on the Optimum Conditions for Synthesizing a Cathode Active Material Precursor in Li-Ion Batteries Using a Taylor Reactor

Cited by 7 publications

References 11 publications

Archives of Metallurgy and Materials

Archives of Metallurgy and Materials

Ceramic-Coated Separator to Enhance Cycling Performance of Lithium-ion Batteries at High Current Density

Nano Silicon Composite with Gelatin/Melamine Derived N-doped Carbon as an Efficient Anode Material for Li-ion Batteries

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