Synchrotron crystal and local structures, microstructure, and electrical characterization of Cu-doped LiFePO4/C via dissolution method with ironstone as Fe source.
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| Title: | Synchrotron crystal and local structures, microstructure, and electrical characterization of Cu-doped LiFePO |
|---|---|
| Authors: | Latif, Chaironi1,2 (AUTHOR), Firdausi, Amalia1 (AUTHOR), Nihlatunnur, Nihlatunnur1 (AUTHOR), Saiyasombat, Chatree3 (AUTHOR), Klysubun, Wantana3 (AUTHOR), Subhan, Achmad4 (AUTHOR), Zainuri, Mochamad1 (AUTHOR), Pratapa, Suminar1 (AUTHOR) suminar_pratapa@physics.its.ac.id |
| Source: | Journal of Materials Science: Materials in Electronics. Aug2022, Vol. 33 Issue 22, p17722-17732. 11p. |
| Subjects: | Crystal structure, Nonaqueous phase liquids, Oxidation states, Synchrotrons, Iron powder, Crystal grain boundaries |
| Abstract: | Powders of lithium iron phosphate (LFP) with Cu doping and carbon coating were prepared by a dissolution method using Fe sourced from natural ironstone. Two dopant amounts were used, 2 and 3 at.% while the carbon coating used carbonization with 9 wt.% citric acid. Synchrotron X-ray diffraction (XRD), Fe K-edge X-ray absorption spectroscopy (XAS), and scanning electron microscopy (SEM) were used to reveal the crystal and local structures and grain morphology of the formed phase. Electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), and charge–discharge (CD) measurements were carried out to determine the electrical properties of the samples. According to the XRD and XAS data, LFP was the main phase in all samples with Fe coordination number 6 and an oxidation number of 2+. Small amounts of hematite were detected in the doped and carbonized samples. SEM images of the 2 and 3 at.% Cu-doped samples showed a spherical morphology with clear grain boundaries, whereas carbonization resulted in smaller grain sizes. XAS analysis showed that Cu doping increased the distance between Fe as the absorbing atom and its nearest-neighbor atoms, while carbon coating reduced it. The EIS and CD tests showed that Cu doping and carbonization increased the conductivity up to 10 times and the specific capacity up to 50 times for the undoped and uncarbonized samples. The CV curves showed that Cu doping and carbonization provided better intercalation, deintercalation, and reversibility properties of LFP as shown by the smallest potential difference at a value as low as 0.2 V. The changes in the electrical properties are explained in terms of the LFP structures. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Materials Science: Materials in Electronics is the property of Springer Nature 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.) | |
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| Header | DbId: egs DbLabel: Engineering Source An: 158278549 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Synchrotron crystal and local structures, microstructure, and electrical characterization of Cu-doped LiFePO<subscript>4</subscript>/C via dissolution method with ironstone as Fe source. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Latif%2C+Chaironi%22">Latif, Chaironi</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Firdausi%2C+Amalia%22">Firdausi, Amalia</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Nihlatunnur%2C+Nihlatunnur%22">Nihlatunnur, Nihlatunnur</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Saiyasombat%2C+Chatree%22">Saiyasombat, Chatree</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Klysubun%2C+Wantana%22">Klysubun, Wantana</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Subhan%2C+Achmad%22">Subhan, Achmad</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zainuri%2C+Mochamad%22">Zainuri, Mochamad</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pratapa%2C+Suminar%22">Pratapa, Suminar</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> suminar_pratapa@physics.its.ac.id</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Materials+Science%3A+Materials+in+Electronics%22">Journal of Materials Science: Materials in Electronics</searchLink>. Aug2022, Vol. 33 Issue 22, p17722-17732. 11p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Crystal+structure%22">Crystal structure</searchLink><br /><searchLink fieldCode="DE" term="%22Nonaqueous+phase+liquids%22">Nonaqueous phase liquids</searchLink><br /><searchLink fieldCode="DE" term="%22Oxidation+states%22">Oxidation states</searchLink><br /><searchLink fieldCode="DE" term="%22Synchrotrons%22">Synchrotrons</searchLink><br /><searchLink fieldCode="DE" term="%22Iron+powder%22">Iron powder</searchLink><br /><searchLink fieldCode="DE" term="%22Crystal+grain+boundaries%22">Crystal grain boundaries</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Powders of lithium iron phosphate (LFP) with Cu doping and carbon coating were prepared by a dissolution method using Fe sourced from natural ironstone. Two dopant amounts were used, 2 and 3 at.% while the carbon coating used carbonization with 9 wt.% citric acid. Synchrotron X-ray diffraction (XRD), Fe K-edge X-ray absorption spectroscopy (XAS), and scanning electron microscopy (SEM) were used to reveal the crystal and local structures and grain morphology of the formed phase. Electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), and charge–discharge (CD) measurements were carried out to determine the electrical properties of the samples. According to the XRD and XAS data, LFP was the main phase in all samples with Fe coordination number 6 and an oxidation number of 2+. Small amounts of hematite were detected in the doped and carbonized samples. SEM images of the 2 and 3 at.% Cu-doped samples showed a spherical morphology with clear grain boundaries, whereas carbonization resulted in smaller grain sizes. XAS analysis showed that Cu doping increased the distance between Fe as the absorbing atom and its nearest-neighbor atoms, while carbon coating reduced it. The EIS and CD tests showed that Cu doping and carbonization increased the conductivity up to 10 times and the specific capacity up to 50 times for the undoped and uncarbonized samples. The CV curves showed that Cu doping and carbonization provided better intercalation, deintercalation, and reversibility properties of LFP as shown by the smallest potential difference at a value as low as 0.2 V. The changes in the electrical properties are explained in terms of the LFP structures. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Materials Science: Materials in Electronics is the property of Springer Nature 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: 10.1007/s10854-022-08635-6 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 11 StartPage: 17722 Subjects: – SubjectFull: Crystal structure Type: general – SubjectFull: Nonaqueous phase liquids Type: general – SubjectFull: Oxidation states Type: general – SubjectFull: Synchrotrons Type: general – SubjectFull: Iron powder Type: general – SubjectFull: Crystal grain boundaries Type: general Titles: – TitleFull: Synchrotron crystal and local structures, microstructure, and electrical characterization of Cu-doped LiFePO4/C via dissolution method with ironstone as Fe source. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Latif, Chaironi – PersonEntity: Name: NameFull: Firdausi, Amalia – PersonEntity: Name: NameFull: Nihlatunnur, Nihlatunnur – PersonEntity: Name: NameFull: Saiyasombat, Chatree – PersonEntity: Name: NameFull: Klysubun, Wantana – PersonEntity: Name: NameFull: Subhan, Achmad – PersonEntity: Name: NameFull: Zainuri, Mochamad – PersonEntity: Name: NameFull: Pratapa, Suminar IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 08 Text: Aug2022 Type: published Y: 2022 Identifiers: – Type: issn-print Value: 09574522 Numbering: – Type: volume Value: 33 – Type: issue Value: 22 Titles: – TitleFull: Journal of Materials Science: Materials in Electronics Type: main |
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