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Zhang S, Yan Y, Zhou Q, Fan Y. Ionic Liquid-Based Extraction Strategy for the Efficient and Selective Recovery of Scandium. Molecules 2024; 29:4007. [PMID: 39274855 PMCID: PMC11396334 DOI: 10.3390/molecules29174007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2024] [Revised: 08/05/2024] [Accepted: 08/22/2024] [Indexed: 09/16/2024] Open
Abstract
The recovery of scandium (Sc) from highly acidic industrial effluents is currently hindered by the use of large quantities of flammable and toxic organic solvents. This study developed an extraction system using ionic liquids (ILs) and phenylphosphinic acid (PPAH) as diluents and an extractant, respectively, to selectively recover Sc from the aqueous phase. The effect of IL chemical structure, aqueous pH and temperature on the extraction of Sc was systematically investigated and the findings revealed that ILs with longer alkyl side chains had reduced Sc extraction ability due to the presence of continuous nonpolar domains formed by the self-aggregation of the IL alkyl side chain. The IL/PPAH system maintained high extraction ability toward Sc across a wide temperature range (288 K to 318 K) and the extraction efficiency of Sc could be improved significantly by increasing the aqueous pH. The extraction process involved proton exchange, resulting in the formation of a metal-ligand complex (Sc(PPA)3).
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Affiliation(s)
- Sheli Zhang
- School of Science and Technology, Jiaozuo Teachers College, Jiaozuo 454000, China
| | - Yuerong Yan
- School of Science and Technology, Jiaozuo Teachers College, Jiaozuo 454000, China
| | - Qiang Zhou
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454003, China
| | - Yunchang Fan
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454003, China
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Kitamura N, Imura T, Ishida N, Ishibashi C, Idemoto Y. Facile Surface Modification of MgMn 2O 4 Positive-Electrode Material for Improving Cycle Performance of Magnesium Rechargeable Batteries. ACS OMEGA 2022; 7:46915-46921. [PMID: 36570301 PMCID: PMC9774335 DOI: 10.1021/acsomega.2c06633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 11/24/2022] [Indexed: 06/17/2023]
Abstract
MgMn2O4 with a tetragonal spinel structure shows promise as a positive-electrode material in magnesium rechargeable batteries (MRBs), which have drawn considerable attention as post lithium-ion batteries. However, the material currently suffers from poor cycle performance. In this study, we attempt to improve the cycle performance of MgMn2O4 via the Zr modification of its particle surface. X-ray photoelectron spectroscopy and energy-dispersive X-ray spectroscopy demonstrate that the surface modification is successfully performed by immersing MgMn2O4 powder into a Zr-containing aqueous solution, followed by heat treatment. However, Zr segregation is observed at high Zr concentration. Furthermore, structural analyses using synchrotron X-rays indicate that the Zr modification has an influence on the bulk structure of the MgMn2O4 powder. The positive-electrode properties of the powders are investigated using discharge/charge cycle tests, which show that Zr modification can drastically improve the cycle performance and coulombic efficiency. These improvements are supposed to be due to suppression of an unexpected reaction by the Zr-surface modification and lower structural distortion after the modification. These findings clearly demonstrate the significant potential of surface modification as a method for obtaining high-performance MRBs.
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Affiliation(s)
- Naoto Kitamura
- Department
of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba278-8510, Japan
- Research
Group for Advanced Energy Conversion, Research Institute for Science
and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba278-8510, Japan
| | - Tomoya Imura
- Department
of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba278-8510, Japan
| | - Naoya Ishida
- Department
of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba278-8510, Japan
| | - Chiaki Ishibashi
- Department
of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba278-8510, Japan
| | - Yasushi Idemoto
- Department
of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba278-8510, Japan
- Research
Group for Advanced Energy Conversion, Research Institute for Science
and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba278-8510, Japan
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Positive-electrode properties and crystal structures of Mg-rich transition metal oxides for magnesium rechargeable batteries. Sci Rep 2022; 12:18097. [PMID: 36302884 PMCID: PMC9613765 DOI: 10.1038/s41598-022-23022-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 10/23/2022] [Indexed: 11/13/2022] Open
Abstract
In this work, we focus on Mg–Fe–O and Mg–Ni–O with Mg-rich compositions as positive-electrode materials for magnesium rechargeable batteries, and prepare them by a thermal decomposition of precipitates obtained by a solution method. It is indicated from X-ray diffraction patterns that the Mg–Fe–O and Mg–Ni–O samples have the spinel and rocksalt structures, respectively. X-ray absorption near edge structures indicate that Fe and Ni are trivalent and divalent, respectively, in the Mg-rich oxides. From charge/discharge cycle test, it is demonstrated that the Mg–Fe–O shows higher discharge capacity than the other and then has good cycle performance while keeping a discharge capacity over 100 mA h g–1. To gain deeper understanding on a relationship between the electrode properties and the crystal structure of the Mg–Fe–O, the crystal structure is investigated by a Rietveld refinement using a synchrotron X-ray diffraction profile and an analysis on total correlation functions. It is indicated from these studies that a vacant octahedral site in the spinel structure is partially occupied by the excess Mg in the synthesized sample. This structural feature might result in a stable charge/discharge cycle performance of the Mg-rich Mg–Fe–O.
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MANDAI T, KUTSUMA A, KONYA M, NAKABAYASHI Y, KANAMURA K. Room Temperature Operation of Magnesium Rechargeable Batteries with a Hydrothermally Treated ZnMnO 3 Defect Spinel Cathode. ELECTROCHEMISTRY 2022. [DOI: 10.5796/electrochemistry.21-00125] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Toshihiko MANDAI
- Center for Advanced Battery Collaboration, Center for Green Research on Energy and Environmental Materials, National Institute for Materials Science (NIMS)
| | - Ayaka KUTSUMA
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University
| | - Masashi KONYA
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University
| | - Yukihiro NAKABAYASHI
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University
| | - Kiyoshi KANAMURA
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University
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