How solution chemistry affects the electrochemical behavior of cathodes for Mg batteries, a classical electroanalytical study

Attias, Ran; Bublil, Shaul; Salama, Michael; Goffer, Yosef; Aurbach, Doron

doi:10.1016/j.electacta.2020.135614

Cited by 11 publications

(19 citation statements)

References 21 publications

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“…[110] The Chevrel phase corresponds to Li + in Mo 6 S 8 , [199] and Mg 2+ in Cu 0.09 Mo 6 S 8 . [200] The organic materials correspond to monovalent and multivalent ions in the organic materials. [56,201] The polyanionic compounds correspond to Na + in NASICON-Na 3 V 2 (PO 4 ) 3 , [194] and Zn 2+ in Na 3 V 2 (PO 4 ) 2 F 3 .…”

Section: Mn-based Materialsmentioning

confidence: 99%

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Cathode Design for Aqueous Rechargeable Multivalent Ion Batteries: Challenges and Opportunities

Liu

Jiang

et al. 2021

Adv Funct Materials

124

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With the rapid growth in energy consumption, renewable energy is a promising solution. However, renewable energy (e.g., wind, solar, and tidal) is discontinuous and irregular by nature, which poses new challenges to the new generation of large‐scale energy storage devices. Rechargeable batteries using aqueous electrolyte and multivalent ion charge are considered more suitable candidates compared to lithium‐ion and lead‐acid batteries, owing to their low cost, ease of manufacture, good safety, and environmentally benign characteristics. However, some substantial challenges hinder the development of aqueous rechargeable multivalent ion batteries (AMVIBs), including the narrow stable electrochemical window of water (≈1.23 V), sluggish ion diffusion kinetics, and stability issues of electrode materials. To address these challenges, a range of encouraging strategies has been developed in recent years, in the aspects of electrolyte optimization, material structure engineering and theoretical investigations. To inspire new research directions, this review focuses on the latest advances in cathode materials for aqueous batteries based on the multivalent ions (Zn2+, Mg2+, Ca2+, Al3+), their common challenges, and promising strategies for improvement. In addition, further suggestions for development directions and a comparison of the different AMVIBs are covered.

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Section: Mn-based Materialsmentioning

confidence: 99%

“…The PBAs correspond to Na + in FeHCF,[198] and Al 3+ in NiHCF [110]. The Chevrel phase corresponds to Li + in Mo 6 S 8 ,[199] and Mg 2+ in Cu 0.09 Mo 6 S 8 [200]. The organic materials correspond to monovalent and multivalent ions in the organic materials [56,201].…”

mentioning

confidence: 99%

Cathode Design for Aqueous Rechargeable Multivalent Ion Batteries: Challenges and Opportunities

Liu

Jiang

et al. 2021

Adv Funct Materials

124

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“…The ability of ions to be reversibly inserted into crystalline materials is frequently perceived to be dependent only on the capability of the inserted ions to diffuse and occupy available sites in the crystalline host material and the resulted solid‐state chemical changes. However, in reality, electrochemical intercalation reactions may be much more complex and are composed of sequential separate steps [23,47,48] . Each one of these steps can be the rate‐determining step for the entire insertion reaction.…”

Section: Intercalation Chemistry ‐ the Beating Heart Of Rechargeable Batteries Based On Active Metals Ionsmentioning

confidence: 99%

“…It is also possible to evaluate the limiting step of the electrochemical intercalation reaction by using specific experimental methods and conditions [23,48] . Knowing the limiting step of the intercalation reaction is very important for the development of practical reversible battery systems.…”

Section: Intercalation Chemistry ‐ the Beating Heart Of Rechargeable Batteries Based On Active Metals Ionsmentioning

confidence: 99%

“…Hence it is possible to prepare MgCl 2 (Lewis‐base)/AlCl 3 (Lewis‐acid)/THF, MgTFSI 2 /MgCl 2 /DME (TFSI=(CF 3 SO 2 ) 2 N − ), and MgTPFA 2 /triglyme (TPFA=Al{OC(CF 3 ) 3 } 4 − ) solutions in which Mg metal electrodes may behave reversibly (discussions on these systems are also beyond the scope of this paper) [18–20] . The above short description is very brief and ignores several other options, nevertheless, it provides a necessary concise background on relevant electrolyte solutions that were used in the studies described herein [2,21–23] …”

Section: Introductionmentioning

confidence: 99%

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Critical Review on the Unique Interactions and Electroanalytical Challenges Related to Cathodes ‐ Solutions Interfaces in Non‐Aqueous Mg Battery Prototypes

et al. 2021

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Rechargeable batteries based on Mg metal anodes may be a promising alternative to current Li‐ion battery systems. However, the development of practical rechargeable Mg batteries (RMBs) is hindered by the absence of cathode materials that can reversibly intercalate Mg ions with a reasonably fast kinetic, while still exhibiting high capacity and high working voltages. In this minireview we summarize our recent progress in understanding cathodes/electrolyte solutions interfaces in non‐aqueous Mg systems. While most studies in the field of cathode materials for RMBs focus on the solid‐state diffusion phenomena of the bare Mg ion within the solid hosts, this minireview summarizes several important findings that demonstrate how the electrochemical response of the cathode material is also significantly influenced by the solution chemistry and structure. We provide a comprehensive description of the sequential steps taking place in the electrochemical intercalation reactions, with an emphasis on the charge transfer process across the solution/electrode interfaces. We discuss the different manner in which the electrolyte solutions′ chemical characteristics can impact each step of the intercalation process and why this information is important for the development of new cathode materials for rechargeable Mg batteries. We believe that these types of fundamental investigations are crucial steps for the realization of this interesting battery technology.

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Cathode Electrolyte Interphase (CEI) Endows Mo₆S₈ with Fast Interfacial Magnesium‐Ion Transfer Kinetics

Wang

Chen

et al. 2023

Angewandte Chemie

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Magnesium (Mg) metal secondary batteries have attracted much attention for their high safety and high energy density characteristics. However, the significant issues of the cathode/electrolyte interphase (CEI) in Mg batteries are still being ignored. In this work, a significant CEI layer on the typical Mo 6 S 8 cathode surface has been unprecedentedly constructed through the oxidation of the chloride-free magnesium tetrakis(hexafluoroisopropyloxy)borate (Mg[B(hfip) 4 ] 2 ) salt under a proper charge cut-off voltage condition. The CEI has been identified to contain B x O y effective species originating from the oxidation of [B(hfip) 4 ] À anion. It is confirmed that the B x O y species is beneficial to the desolvation of solvated Mg 2 + , speeding up the interfacial Mg 2 + transfer kinetics, thereby improving the Mg 2 + -storage capability of Mo 6 S 8 host. The firstly reported CEI in Mg batteries will give deeper insights into the interface issues in multivalent electrochemical systems.

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How solution chemistry affects the electrochemical behavior of cathodes for Mg batteries, a classical electroanalytical study

Cited by 11 publications

References 21 publications

Cathode Design for Aqueous Rechargeable Multivalent Ion Batteries: Challenges and Opportunities

Cathode Design for Aqueous Rechargeable Multivalent Ion Batteries: Challenges and Opportunities

Critical Review on the Unique Interactions and Electroanalytical Challenges Related to Cathodes ‐ Solutions Interfaces in Non‐Aqueous Mg Battery Prototypes

Cathode Electrolyte Interphase (CEI) Endows Mo₆S₈ with Fast Interfacial Magnesium‐Ion Transfer Kinetics

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How solution chemistry affects the electrochemical behavior of cathodes for Mg batteries, a classical electroanalytical study

Cited by 11 publications

References 21 publications

Cathode Design for Aqueous Rechargeable Multivalent Ion Batteries: Challenges and Opportunities

Cathode Design for Aqueous Rechargeable Multivalent Ion Batteries: Challenges and Opportunities

Critical Review on the Unique Interactions and Electroanalytical Challenges Related to Cathodes ‐ Solutions Interfaces in Non‐Aqueous Mg Battery Prototypes

Cathode Electrolyte Interphase (CEI) Endows Mo6S8 with Fast Interfacial Magnesium‐Ion Transfer Kinetics

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Resources

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Cathode Electrolyte Interphase (CEI) Endows Mo₆S₈ with Fast Interfacial Magnesium‐Ion Transfer Kinetics