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Synthesis and Electrochemical Properties of Spinel Li1.02Ni0.05Mn1.93O4 Cathode Materials
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Qimei LIANG1, 2, 3, Qing LIU1, 2, 3, Junming GUO1, 2, 3, Wei BAI1, 2, 3, Mingwu XIANG1, 2, 3, Xiaofang LIU1, 2, 3, Hongli BAI1, 2, 3
Journal of the Chinese Ceramic Society | 2021, 49(6) : 1048 - 1055
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Journal of the Chinese Ceramic Society | 2021, 49(6): 1048-1055
Synthesis and Electrochemical Properties of Spinel Li1.02Ni0.05Mn1.93O4 Cathode Materials
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Qimei LIANG1, 2, 3, Qing LIU1, 2, 3, Junming GUO1, 2, 3, Wei BAI1, 2, 3, Mingwu XIANG1, 2, 3, Xiaofang LIU1, 2, 3, Hongli BAI1, 2, 3
Affiliations
  • 1.School of Chemistry and Environment, Kunming 650500, China
  • 2.Yunnan Minzu University; National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, Kunming 650500, China
  • 3.Yunnan Provincial Higher Educational Key Laboratory of Green-chemical Materials, Kunming 650500, China

    • LIANG Qimei (1996-), female, Master candidate. E-mail:

About Author:

LIANG Qimei (1996-), female, Master candidate. E-mail:

Published: 2021-06-20 doi: 10.14062/j.issn.0454-5648.20200601
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Li1.02Ni0.05Mn1.93O4(LNMO) cathode materials were synthesized via liquid flameless combustion at 500℃ for 1 h and subsequent calcination at 700℃ for 3, 6, 9 h and 12 h. The effect of calcination time on the structure, morphology, electrochemical and kinetic properties of the LNMO samples was investigated. The results show that all the samples synthesized have a spinel structure of LiMn2O4, and the particle size and crystallinity increase with the increase of calcination time. The LNMO-6 sample has a superior electrochemical performance (i.e., the first discharge specific capacity of 118.7 mA·h/g and the capacity retention rate of 87.0% after 200 cycles at 1 C). At high rates of 5 C and 10 C, the LNMO-6 sample still maintains capacity retention rates of 76.3% and 75.5% after 1 000 cycles. Based on the results by cyclic voltammetry and electrochemical impedance spectroscopy, the LNMO-6 sample has the maximum diffusion coefficient (i.e., 3.74×10-15 cm2/s) and the minimal apparent activation energy (i.e., 22.72 kJ/mol).

lithium manganite  /  lithium-nickel dual-doping  /  flameless combustion method  /  calcination time  /  cathode materials  /  lithium-ion battery
梁其梅, 刘清, 郭俊明, 白玮, 向明武, 刘晓芳, 白红丽. 尖晶石型Li1.02Ni0.05Mn1.93O4正极材料的合成及电化学性能. 硅酸盐学报, 2021 , 49 (6) : 1048 -1055 . DOI: 10.14062/j.issn.0454-5648.20200601
Qimei LIANG, Qing LIU, Junming GUO, Wei BAI, Mingwu XIANG, Xiaofang LIU, Hongli BAI. Synthesis and Electrochemical Properties of Spinel Li1.02Ni0.05Mn1.93O4 Cathode Materials[J]. Journal of the Chinese Ceramic Society, 2021 , 49 (6) : 1048 -1055 . DOI: 10.14062/j.issn.0454-5648.20200601
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Year 2021 volume 49 Issue 6
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Article Info
doi: 10.14062/j.issn.0454-5648.20200601
  • Receive Date：2020-08-16
  • Online Date：2026-10-30
  • Published：2021-06-20
Article Data
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History
  • Received：2020-08-16
  • Revised：2020-09-17
Funding
Affiliations
    1.School of Chemistry and Environment, Kunming 650500, China
    2.Yunnan Minzu University; National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, Kunming 650500, China
    3.Yunnan Provincial Higher Educational Key Laboratory of Green-chemical Materials, Kunming 650500, China

Corresponding:

GUO Junming (1962-), male, Master, Professor. E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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