Correlation between structural, electrical and electrochemical performance of Zn doped high voltage spinel LiNi0.5-xZnxMn1.5O4 porous microspheres as a cathode material for Li-Ion batteries.
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| Title: | Correlation between structural, electrical and electrochemical performance of Zn doped high voltage spinel LiNi0.5-xZnxMn1.5O4 porous microspheres as a cathode material for Li-Ion batteries. |
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| Authors: | Gajraj, V.1,2 (AUTHOR), Azmi, R.3 (AUTHOR), Darma, M.S.D.3 (AUTHOR), Indris, S.3 (AUTHOR), Ehrenberg, H.3 (AUTHOR), Mariappan, C.R.1 (AUTHOR) crm@nitkkr.ac.in |
| Source: | Ceramics International. Dec2021, Vol. 47 Issue 24, p35275-35286. 12p. |
| Subjects: | Microspheres, Lithium-ion batteries, High voltages, Spinel, X-ray photoelectron spectroscopy, Electric conductivity, Electric batteries, Lithium ions |
| Abstract: | This work reports on the structural, electrical and electrochemical properties of Zn doped LiNi 0.5-x Zn x Mn 1.5 O 4 (x = 0.0, 0.05, 0.1 and 0.2) porous microspheres cathode materials obtained by a hydrothermal route followed by low-temperature annealing. Structural properties are investigated by X-ray diffraction (XRD), nuclear magnetic resonance (NMR) spectroscopy; scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Raman, and Fourier transform infrared (FTIR) spectroscopy. The XRD patterns and NMR studies further demonstrate the successful incorporation of Zn into the spinel structure. SEM reveals morphology with porous spheres with a size range of 0.2 μm – 1 μm. Temperature dependent electrical conductivity was measured by impedance spectroscopy. The activation energies of total conductivity are determined as 0.41, 0.41, 0.47, and 0.48 eV for x = 0, 0.05, 0.1, and 0.2, respectively. Influence of Zn doping on the grain, grain boundary and total conductivities of LiNi 0.5-x Zn x Mn 1.5 O 4 were analyzed through brick-layer model. The grain conductivity increases with Zn content, whereas the total conductivity increases till x = 0.1. Overall, electrical properties of LiNi 0.5-x Zn x Mn 1.5 O 4 are governed by grain boundary conduction. Increasing the Zn content up to x = 0.1 in LiNi 0.5-x Zn x Mn 1.5 O 4 leads to an increment in specific capacity at a 1C rate. Among them, the LiNi 0.4 Zn 0.1 Mn 1.5 O 4 exhibits a high discharge capacity of 114 mAh g−1 at 1C with capacity retention of 91.5% after 50 cycles. We also investigated the effect of Zn doping on Li+ ion diffusivity and observed improved Li+ ion diffusion (7.4⋅10−13 cm2 s−1) for LiNi 0.4 Zn 0.1 Mn 1.5 O 4. Based on these electrochemical studies it is proposed that this material can be utilized as a cathode in Li-ion batteries for high-power applications. [ABSTRACT FROM AUTHOR] |
| Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 153293253 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Correlation between structural, electrical and electrochemical performance of Zn doped high voltage spinel LiNi0.5-xZnxMn1.5O4 porous microspheres as a cathode material for Li-Ion batteries. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Gajraj%2C+V%2E%22">Gajraj, V.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Azmi%2C+R%2E%22">Azmi, R.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Darma%2C+M%2ES%2ED%2E%22">Darma, M.S.D.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Indris%2C+S%2E%22">Indris, S.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ehrenberg%2C+H%2E%22">Ehrenberg, H.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mariappan%2C+C%2ER%2E%22">Mariappan, C.R.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> crm@nitkkr.ac.in</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Ceramics+International%22">Ceramics International</searchLink>. Dec2021, Vol. 47 Issue 24, p35275-35286. 12p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Microspheres%22">Microspheres</searchLink><br /><searchLink fieldCode="DE" term="%22Lithium-ion+batteries%22">Lithium-ion batteries</searchLink><br /><searchLink fieldCode="DE" term="%22High+voltages%22">High voltages</searchLink><br /><searchLink fieldCode="DE" term="%22Spinel%22">Spinel</searchLink><br /><searchLink fieldCode="DE" term="%22X-ray+photoelectron+spectroscopy%22">X-ray photoelectron spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+conductivity%22">Electric conductivity</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+batteries%22">Electric batteries</searchLink><br /><searchLink fieldCode="DE" term="%22Lithium+ions%22">Lithium ions</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This work reports on the structural, electrical and electrochemical properties of Zn doped LiNi 0.5-x Zn x Mn 1.5 O 4 (x = 0.0, 0.05, 0.1 and 0.2) porous microspheres cathode materials obtained by a hydrothermal route followed by low-temperature annealing. Structural properties are investigated by X-ray diffraction (XRD), nuclear magnetic resonance (NMR) spectroscopy; scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Raman, and Fourier transform infrared (FTIR) spectroscopy. The XRD patterns and NMR studies further demonstrate the successful incorporation of Zn into the spinel structure. SEM reveals morphology with porous spheres with a size range of 0.2 μm – 1 μm. Temperature dependent electrical conductivity was measured by impedance spectroscopy. The activation energies of total conductivity are determined as 0.41, 0.41, 0.47, and 0.48 eV for x = 0, 0.05, 0.1, and 0.2, respectively. Influence of Zn doping on the grain, grain boundary and total conductivities of LiNi 0.5-x Zn x Mn 1.5 O 4 were analyzed through brick-layer model. The grain conductivity increases with Zn content, whereas the total conductivity increases till x = 0.1. Overall, electrical properties of LiNi 0.5-x Zn x Mn 1.5 O 4 are governed by grain boundary conduction. Increasing the Zn content up to x = 0.1 in LiNi 0.5-x Zn x Mn 1.5 O 4 leads to an increment in specific capacity at a 1C rate. Among them, the LiNi 0.4 Zn 0.1 Mn 1.5 O 4 exhibits a high discharge capacity of 114 mAh g−1 at 1C with capacity retention of 91.5% after 50 cycles. We also investigated the effect of Zn doping on Li+ ion diffusivity and observed improved Li+ ion diffusion (7.4⋅10−13 cm2 s−1) for LiNi 0.4 Zn 0.1 Mn 1.5 O 4. Based on these electrochemical studies it is proposed that this material can be utilized as a cathode in Li-ion batteries for high-power applications. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.ceramint.2021.09.070 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 12 StartPage: 35275 Subjects: – SubjectFull: Microspheres Type: general – SubjectFull: Lithium-ion batteries Type: general – SubjectFull: High voltages Type: general – SubjectFull: Spinel Type: general – SubjectFull: X-ray photoelectron spectroscopy Type: general – SubjectFull: Electric conductivity Type: general – SubjectFull: Electric batteries Type: general – SubjectFull: Lithium ions Type: general Titles: – TitleFull: Correlation between structural, electrical and electrochemical performance of Zn doped high voltage spinel LiNi0.5-xZnxMn1.5O4 porous microspheres as a cathode material for Li-Ion batteries. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Gajraj, V. – PersonEntity: Name: NameFull: Azmi, R. – PersonEntity: Name: NameFull: Darma, M.S.D. – PersonEntity: Name: NameFull: Indris, S. – PersonEntity: Name: NameFull: Ehrenberg, H. – PersonEntity: Name: NameFull: Mariappan, C.R. IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 12 Text: Dec2021 Type: published Y: 2021 Identifiers: – Type: issn-print Value: 02728842 Numbering: – Type: volume Value: 47 – Type: issue Value: 24 Titles: – TitleFull: Ceramics International Type: main |
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