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Medina A, Rodríguez AI, Pérez‐Vicente C, Alcántara R. Magnesium Deintercalation From the Spinel-Type MgMn 2-y Fe y O 4 (0.4≤y≤2.0) by Acid-Treatment and Electrochemistry. Chemistry 2021; 27:12599-12609. [PMID: 34165219 PMCID: PMC8457118 DOI: 10.1002/chem.202101700] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Indexed: 11/09/2022]
Abstract
Rechargeable magnesium batteries attract lots of attention because of their high safety and low cost compared to lithium batteries, and it is needed to develop more efficient electrode materials. Although MgMn2 O4 is a promising material for the positive electrode in Mg rechargeable batteries, it usually exhibits poor cyclability. To improve the electrochemical behavior, we have prepared nanoparticles of MgMn2-y Fey O4 . The XRD results have confirmed that when Mn3+ (Jahn-Teller ion) ions are replaced by Fe3+ (non-Jahn-Teller ion), the resulting MgMn2-y Fey O4 is a cubic phase. The structure and theoretical voltage are theoretically calculated by using the DFT method. The obtained samples have been chemically treated in acid solution for partial demagnesiation, and it is observed that the presence of iron inhibits the deinsertion of Mg through disproportionation and favors the exchange reaction. The electrochemical behavior in non-aqueous magnesium cells has been explored.
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Affiliation(s)
- Alejandro Medina
- Department of Inorganic ChemistryInstituto Universitario de Investigación en Química Fina y Nanoquímica (IUNAN) University of Córdoba Campus de Rabanales, Edificio Marie Curie14071CórdobaSpain
| | - Ana I. Rodríguez
- Department of Inorganic ChemistryInstituto Universitario de Investigación en Química Fina y Nanoquímica (IUNAN) University of Córdoba Campus de Rabanales, Edificio Marie Curie14071CórdobaSpain
| | - Carlos Pérez‐Vicente
- Department of Inorganic ChemistryInstituto Universitario de Investigación en Química Fina y Nanoquímica (IUNAN) University of Córdoba Campus de Rabanales, Edificio Marie Curie14071CórdobaSpain
| | - Ricardo Alcántara
- Department of Inorganic ChemistryInstituto Universitario de Investigación en Química Fina y Nanoquímica (IUNAN) University of Córdoba Campus de Rabanales, Edificio Marie Curie14071CórdobaSpain
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Yin L, Kwon BJ, Choi Y, Bartel CJ, Yang M, Liao C, Key B, Ceder G, Lapidus SH. Operando X-ray Diffraction Studies of the Mg-Ion Migration Mechanisms in Spinel Cathodes for Rechargeable Mg-Ion Batteries. J Am Chem Soc 2021; 143:10649-10658. [PMID: 34236849 DOI: 10.1021/jacs.1c04098] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A promising high-voltage spinel oxide cathode material MgCrMnO4 with 18% Mg/Mn inversion was synthesized successfully. A new custom operando battery device was designed to study the cation migration mechanisms of the MgCrMnO4 cathode using 0.1 M Mg(TPFA)2 electrolyte dissolved in triglyme and activated carbon as the anode. For the first time in multivalent batteries, high-quality operando diffraction data enabled the accurate quantification of cation contents in the host structure. Besides the exceptional reversibility of 12% Mg2+ insertion in Mg1-xCrMnO4 (x ≤ 1), a partially reversible insertion of excess Mg2+ during overdischarging was also observed. Moreover, the insertion/extraction reaction was experimentally shown to be accompanied by a series of cation redistributions in the spinel framework, which were further supported by density functional theory calculations. The inverted Mn is believed to be directly involved in the cation migrations, which would cause voltage hysteresis and irreversible structural evolution after overdischarging. Tuning the Mg/Mn inversion rate could provide a direct path to further optimize spinel oxide cathodes for Mg-ion batteries, and more generally, the operando techniques developed in this work should play a key role in understanding the complex mechanisms involved in multivalent ion insertion systems.
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Affiliation(s)
- Liang Yin
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, United States.,Joint Center for Energy Storage Research, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Bob Jin Kwon
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States.,Joint Center for Energy Storage Research, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Yunyeong Choi
- Department of Materials Science and Engineering, University of California Berkeley, Berkeley, California 94720, United States
| | - Christopher J Bartel
- Department of Materials Science and Engineering, University of California Berkeley, Berkeley, California 94720, United States
| | - Mengxi Yang
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States.,Joint Center for Energy Storage Research, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Chen Liao
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States.,Joint Center for Energy Storage Research, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Baris Key
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States.,Joint Center for Energy Storage Research, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Gerbrand Ceder
- Department of Materials Science and Engineering, University of California Berkeley, Berkeley, California 94720, United States.,Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Saul H Lapidus
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, United States.,Joint Center for Energy Storage Research, Argonne National Laboratory, Lemont, Illinois 60439, United States
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Medina A, Rodríguez AI, Pérez-Vicente C, Alcántara R. Testing the reversible insertion of magnesium in a cation-deficient manganese oxy-spinel through a concentration cell. Dalton Trans 2021; 50:2123-2130. [DOI: 10.1039/d0dt03856c] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new electrochemical procedure to explore the intercalation of magnesium using a concentration cell with two cubic spinels Mg1−xMn2O4.
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Affiliation(s)
- Alejandro Medina
- Departamento de Química Inorgánica e Ingeniería Química
- Instituto Universitario de Investigación en Química Fina y Nanoquímica (IUNAN)
- Universidad de Córdoba
- E-14071 Córdoba
- Spain
| | - Ana I. Rodríguez
- Departamento de Química Inorgánica e Ingeniería Química
- Instituto Universitario de Investigación en Química Fina y Nanoquímica (IUNAN)
- Universidad de Córdoba
- E-14071 Córdoba
- Spain
| | - Carlos Pérez-Vicente
- Departamento de Química Inorgánica e Ingeniería Química
- Instituto Universitario de Investigación en Química Fina y Nanoquímica (IUNAN)
- Universidad de Córdoba
- E-14071 Córdoba
- Spain
| | - Ricardo Alcántara
- Departamento de Química Inorgánica e Ingeniería Química
- Instituto Universitario de Investigación en Química Fina y Nanoquímica (IUNAN)
- Universidad de Córdoba
- E-14071 Córdoba
- Spain
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