A design concept for halogen-free Mg2+/Li+-dual salt-containing gel-polymer-electrolytes for rechargeable magnesium batteries

Wang, Pei‐Wen; Trück, Janina; Häcker, Joachim; Schlosser, Anja; Küster, Kathrin; Starke, Ulrich; Reinders, Leonie; Buchmeiser, Michael R.

doi:10.1016/j.ensm.2022.04.034

Cited by 17 publications

(11 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Owing to lacking effective SEI layers, an important current electrolyte research consensus is to develop reductively stable electrolytes which are less liable to react with the Mg electrode in thermodynamics, such as reduction-resistant salts dissolved in ether-based solvent, and thus the exposed fresh Mg surface can support reversible Mg plating/stripping. − Although considerable advances have been accomplished in recent two decades, − these new-type electrolytes still suffer from many intractable problems, such as a complex synthesis process, high cost, and Cl – corrosion. Especially, they nearly all have the disadvantage of the high sensitivity to water content, which could be not suitable for practical commercial application.…”

mentioning

confidence: 99%

Solvent Molecule Design Enables Excellent Charge Transfer Kinetics for a Magnesium Metal Anode

Wang

Hua

et al. 2022

ACS Energy Lett.

View full text Add to dashboard Cite

Lacking of suitable electrolytes is a fatal obstacle for the development of rechargeable magnesium batteries (RMBs). Herein, according to the design of a series of solvent molecules, we find 3methoxypropylamine possesses a middle coordination ability that can be used as an effective solvent and realize a reversible Mg anode with traditional Mg salts. Mechanism study indicates, attributed to its unique solvated structure, energy barriers in both the charge transfer process and desolvation process are extremely low, thus leading to the fast charge transfer kinetics. The relationship between solvated structures and performances is precisely revealed for the first time in RMBs. Additionally, electrolytes with amine solvents possess outstanding water-resistant properties owing to strong hydrogen bonds between amine groups and water. This work proposes a universal design principle of solvent molecules for RMBs, inspiring a new thinking of developing advanced electrolytes in the view of solvents.

show abstract

mentioning

confidence: 99%

Solvent Molecule Design Enables Excellent Charge Transfer Kinetics for a Magnesium Metal Anode

Wang

Hua

et al. 2022

ACS Energy Lett.

View full text Add to dashboard Cite

show abstract

“…Therefore, PTHF was a candidate material for a highperformance artificial SEI thanks to the success of PTHF-based polymer electrolytes in supporting Mg 2+ transport. 70,71 Furthermore, PTHF-based artificial SEI with lower spatial concentration of oxygen atoms may achieve higher ion transport than PEO-based counterparts 72 if a novel strategy was applied to fabricate a homogeneous thin film.…”

Section: Characterization Of Interfacial Chemistrymentioning

confidence: 99%

Non-nucleophilic electrolyte with non-fluorinated hybrid solvents for long-life magnesium metal batteries

Sun

Wang

Jiang

et al. 2023

Energy Environ. Sci.

View full text Add to dashboard Cite

show abstract

“…sulfur in molecules or to a polymer backbone. To date, 2,5-dimercapto-1,3,4-thiadiazole (DMcT), [174] poly-2,20dithiodianiline (PDTDA), [174] sulfurized poly(acrylonitrile) (SPAN), [156,[174][175][176][177][178][179] and selenized poly(acrylonitrile) (SePAN) [180] have been investigated as potential cathode material in Mg-S and Mg-Se cells, respectively.…”

Section: Covalently Bound S and Sementioning

confidence: 99%

“…For this reason, hybrid electrolytes were applied in recent years to take advantage of the fast monovalent-ion diffusion to function as mediator and enhance the cathode kinetics (see Section 4.3.2). [176][177][178][179][180] Note that despite such cathode concept, partially polysulfides are generated-as the anode shows some sulfur residues at its surface in post-mortem analysis. [175] Despite being beneficial for the kinetics, this results in active material loss and possible anode passivation.…”

Section: Covalently Bound S and Sementioning

confidence: 99%

Cathode Materials and Chemistries for Magnesium Batteries: Challenges and Opportunities

Häcker

Fichtner

et al. 2023

Advanced Energy Materials

Self Cite

View full text Add to dashboard Cite

Rechargeable magnesium batteries hold promise for providing high energy density, material sustainability, and safety features, attracting increasing research interest as post‐lithium batteries. With the progressive development of Mg electrolytes with enhanced (electro‐)chemical stability, tremendous efforts have been devoted to the exploration of high‐energy cathode materials. In this review, recent findings related to Mg cathode chemistry are summarized, focusing on the strategies that promote Mg2+ diffusion by targeting its interaction with the cathode hosts. The critical role of the cathode–electrolyte interfaces is elaborated, which remains largely unexplored in Mg systems. The approaches to optimization of cathode–electrolyte combinations to unlock the kinetic limitations of Mg2+ diffusion, enabling fast electrochemical processes of the cathodes, are highlighted. Furthermore, representative conversion chemistries and coordination chemistries that bypass bulk Mg2+ diffusion are discussed, with particular attention given to their key challenges and prospects. Finally, the hybrid systems that combine the fast kinetics of the monovalent cathode chemistries and high‐capacity Mg anodes are revisited, calling for further practical evaluation of this promising strategy. All in all, the aim is to provide fundamental insights into the cathode chemistry, which promotes the material development and interfacial regulations toward practical high‐performance Mg batteries.

show abstract

A design concept for halogen-free Mg2+/Li+-dual salt-containing gel-polymer-electrolytes for rechargeable magnesium batteries

Cited by 17 publications

References 27 publications

Solvent Molecule Design Enables Excellent Charge Transfer Kinetics for a Magnesium Metal Anode

Solvent Molecule Design Enables Excellent Charge Transfer Kinetics for a Magnesium Metal Anode

Non-nucleophilic electrolyte with non-fluorinated hybrid solvents for long-life magnesium metal batteries

Cathode Materials and Chemistries for Magnesium Batteries: Challenges and Opportunities

Contact Info

Product

Resources

About