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Founded in 1987， Bimonthly
Supervisor：Jiangxi University Of Science And Technology
Sponsored by：Jiangxi University Of Science And Technology
Jiangxi Nonferrous Metals Society
ISSN：1674-9669
CN：36-1311/TF
CODEN YJKYA9
Volume 13 Issue 4
Aug.  2022
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HU Shun, XIA Dingfeng, ZOU Jin, ZHONG Shengwen. Research on the synthesis process of cathode material LiNi0.8Mn0.2O2 precursor[J]. Nonferrous Metals Science and Engineering, 2022, 13(4): 70-79. DOI: 10.13264/j.cnki.ysjskx.2022.04.009
Citation: HU Shun, XIA Dingfeng, ZOU Jin, ZHONG Shengwen. Research on the synthesis process of cathode material LiNi0.8Mn0.2O2 precursor[J]. Nonferrous Metals Science and Engineering, 2022, 13(4): 70-79. DOI: 10.13264/j.cnki.ysjskx.2022.04.009
shu

Research on the synthesis process of cathode material LiNi0.8Mn0.2O2 precursor

  • a.

    School of Material Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China

  • b.

    Jiangxi Key Laboratory of Power Battery and Materials, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China

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  • Received Date: February 21, 2022
  • Revised Date: April 06, 2022
  • Available Online: September 02, 2022
    Graphical Abstract
    • Abstract
  • Currently, the low cost and stable performance of cobalt-free nickel manganese cathode materials is a research hotspot. This study prepared a Ni0.8Mn0.2(OH)2 precursor through a coprecipitation method, used ammonia as a complexing agent and explored the effect of NH3 concentration on the grain growth and morphology of the coprecipitated Ni0.8Mn0.2(OH)2 precursor, as well as its effect on the crystal structure and electrochemical properties of LiNi0.8Mn0.2O2 of the cathode material for lithium ion batteries. The structure, morphology and electrochemical properties of the materials were characterized by X-ray diffraction, scanning electron microscopy, cyclic voltammetry, AC impedance and battery charge discharge tests. The characterization results showed that at 0.1 C rate with 2.5~4.2 V the initial specific discharge capacity was 167 mAh/g with the charge-discharge efficiency 96%. When the amount of ammonia was 45 mL, the sample had the best cycle performance. At a 1 C rate of 2.5~4.2 V, after 100 cycles, the specific discharge capacity was 139mAh/g with the capacity retention 93.9%. The samples had significantly better electrochemical properties than other materials when the charge and discharge rate was low.
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    • References (27)
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