New Insights into the Electrochemical Behavior of Hematite ( α-FeO) Microparticles in Strong Aqueous Basic Electrolyte: Formation of Metallic Iron.
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| Title: | New Insights into the Electrochemical Behavior of Hematite ( α-FeO) Microparticles in Strong Aqueous Basic Electrolyte: Formation of Metallic Iron. |
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| Authors: | Minakshi, Manickam1 minakshi@murdoch.edu.au, Ralph, David1, Singh, Pritam2, Yin, Chun-Yang1 c.yin@murdoch.edu.au |
| Source: | Metallurgical & Materials Transactions. Part A. Apr2014, Vol. 45 Issue 4, p2023-2029. 7p. |
| Subjects: | Hematite crystals, Electrochemical metallizing, Metal microstructure, Aqueous electrolytes, Metal coating, Clathrate compounds |
| Abstract: | A detailed electrochemical study of cubic α-FeO microparticles has been carried out in strong aqueous LiOH electrolyte. The α-FeO was synthesized hydrothermally and investigated in the form of an electrochemical cell using an alkaline solution, ' α-FeO|LiOH (saturated), ZnSO (1 M)|Zn'. In this cell, the α-FeO cathode showed a reversible capacity of ca 220 mAh/g within cut-off voltages of 0 and 1.5 V under the constant current of 0.3 mA. The electrochemical performance was attributed to the reversible formation of both proton and lithium intercalation products (FeOOH and LiFeO) detected in the cathode material. Interestingly, at a lower discharge current of 0.1 mA, some of the hematite phase was reduced to metallic iron after yielding 336 mAh/g. The various possible electro-reduction reactions, which have direct electro-hydrometallurgical implications, are analyzed and discussed. [ABSTRACT FROM AUTHOR] |
| Copyright of Metallurgical & Materials Transactions. Part A 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.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 95108410 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: New Insights into the Electrochemical Behavior of Hematite ( α-FeO) Microparticles in Strong Aqueous Basic Electrolyte: Formation of Metallic Iron. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Minakshi%2C+Manickam%22">Minakshi, Manickam</searchLink><relatesTo>1</relatesTo><i> minakshi@murdoch.edu.au</i><br /><searchLink fieldCode="AR" term="%22Ralph%2C+David%22">Ralph, David</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Singh%2C+Pritam%22">Singh, Pritam</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Yin%2C+Chun-Yang%22">Yin, Chun-Yang</searchLink><relatesTo>1</relatesTo><i> c.yin@murdoch.edu.au</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Metallurgical+%26+Materials+Transactions%2E+Part+A%22">Metallurgical & Materials Transactions. Part A</searchLink>. Apr2014, Vol. 45 Issue 4, p2023-2029. 7p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Hematite+crystals%22">Hematite crystals</searchLink><br /><searchLink fieldCode="DE" term="%22Electrochemical+metallizing%22">Electrochemical metallizing</searchLink><br /><searchLink fieldCode="DE" term="%22Metal+microstructure%22">Metal microstructure</searchLink><br /><searchLink fieldCode="DE" term="%22Aqueous+electrolytes%22">Aqueous electrolytes</searchLink><br /><searchLink fieldCode="DE" term="%22Metal+coating%22">Metal coating</searchLink><br /><searchLink fieldCode="DE" term="%22Clathrate+compounds%22">Clathrate compounds</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: A detailed electrochemical study of cubic α-FeO microparticles has been carried out in strong aqueous LiOH electrolyte. The α-FeO was synthesized hydrothermally and investigated in the form of an electrochemical cell using an alkaline solution, ' α-FeO|LiOH (saturated), ZnSO (1 M)|Zn'. In this cell, the α-FeO cathode showed a reversible capacity of ca 220 mAh/g within cut-off voltages of 0 and 1.5 V under the constant current of 0.3 mA. The electrochemical performance was attributed to the reversible formation of both proton and lithium intercalation products (FeOOH and LiFeO) detected in the cathode material. Interestingly, at a lower discharge current of 0.1 mA, some of the hematite phase was reduced to metallic iron after yielding 336 mAh/g. The various possible electro-reduction reactions, which have direct electro-hydrometallurgical implications, are analyzed and discussed. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Metallurgical & Materials Transactions. Part A 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/s11661-013-2128-6 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 7 StartPage: 2023 Subjects: – SubjectFull: Hematite crystals Type: general – SubjectFull: Electrochemical metallizing Type: general – SubjectFull: Metal microstructure Type: general – SubjectFull: Aqueous electrolytes Type: general – SubjectFull: Metal coating Type: general – SubjectFull: Clathrate compounds Type: general Titles: – TitleFull: New Insights into the Electrochemical Behavior of Hematite ( α-FeO) Microparticles in Strong Aqueous Basic Electrolyte: Formation of Metallic Iron. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Minakshi, Manickam – PersonEntity: Name: NameFull: Ralph, David – PersonEntity: Name: NameFull: Singh, Pritam – PersonEntity: Name: NameFull: Yin, Chun-Yang IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 04 Text: Apr2014 Type: published Y: 2014 Identifiers: – Type: issn-print Value: 10735623 Numbering: – Type: volume Value: 45 – Type: issue Value: 4 Titles: – TitleFull: Metallurgical & Materials Transactions. Part A Type: main |
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