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The Effects of a Mixed Precipitant on the Morphology and Electrochemical Performance of LiNi0.5Mn1.5O4 Cathode Materials
Shu, Yang1,2; Yan, Wenchao2; Wang, Haisong1; Jiang, Jicheng2; Sun, Deye2; Ma, Xiaodi2; Jin, Yongcheng2
2017-09-01
Source PublicationCRYSTALS
Volume7Issue:9
AbstractA series of LiNi0.5Mn1.5O4 (LNMO) samples were synthesized by adjusting the molar ratio of (NH4)(2)CO3 to Na2CO3 in a mixed precipitant for evaluating the effects of ammonia from (NH4)(2)CO3 as a complexing agent and Na2CO3 as a precipitant on the morphology and electrochemical performances of LNMO. In this research, a rapid precipitation method followed by hydrothermal treatment was used to prepare the precursors of LNMO, and different molar ratios (0:1, 1:2, 1:1, 2:1, 1:0) of (NH4)(2)CO3 to Na2CO3 were used for mixed precipitants. The test results revealed that the cathode material exhibits the best electrochemical performance when the molar ratio of (NH4)(2)CO3 to Na2CO3 is set at 1:2, displaying a specific discharge capacity of 129.4 mA h g(-1) at 0.5 C and a capacity retention of 82.3% after 200 charge-discharge cycles. In addition, it still shows a high rate performance with a discharge capacity of 112.7 mA h g(-1) at 10 C and 98.8 mA h g(-1) at 20 C, which is attributed to an accurate Ni/Mn ratio, smaller primary particle sizes and a porous spherical morphology.
SubtypeArticle
KeywordRapid Precipitation Hydrothermal Treatment Mixed Precipitants Spherical Morphology
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.3390/cryst7090275
WOS KeywordLITHIUM-ION BATTERIES ; VOLTAGE SPINEL LINI0.5MN1.5O4 ; COPRECIPITATION METHOD ; MICROSPHERES ; LIMN1.5NI0.5O4
Indexed BySCI
Language英语
WOS Research AreaCrystallography ; Materials Science
Funding OrganizationChinese Academy of Sciences(YZ201641)
WOS SubjectCrystallography ; Materials Science, Multidisciplinary
WOS IDWOS:000412049600019
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qibebt.ac.cn/handle/337004/9601
Collection先进界面技术研究组
Affiliation1.Dalian Polytech Univ, Sch Light Ind & Chem Engn, Dalian 116034, Peoples R China
2.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China
Recommended Citation
GB/T 7714
Shu, Yang,Yan, Wenchao,Wang, Haisong,et al. The Effects of a Mixed Precipitant on the Morphology and Electrochemical Performance of LiNi0.5Mn1.5O4 Cathode Materials[J]. CRYSTALS,2017,7(9).
APA Shu, Yang.,Yan, Wenchao.,Wang, Haisong.,Jiang, Jicheng.,Sun, Deye.,...&Jin, Yongcheng.(2017).The Effects of a Mixed Precipitant on the Morphology and Electrochemical Performance of LiNi0.5Mn1.5O4 Cathode Materials.CRYSTALS,7(9).
MLA Shu, Yang,et al."The Effects of a Mixed Precipitant on the Morphology and Electrochemical Performance of LiNi0.5Mn1.5O4 Cathode Materials".CRYSTALS 7.9(2017).
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