Three-Dimensional Magnesiophilic Scaffolds for Reduced Passivation toward High-Rate Mg Metal Anodes in a Noncorrosive Electrolyte

Wan, Bingxin; Dou, Huanglin; Zhao, Xiaoli; Wang, Jiahe; Zhao, Wanyu; Guo, Min; Zhang, Yijie; Li, Jinjin; Ma, Zhenqiang; Yang, Xiaowei

doi:10.1021/acsami.0c07213

Cited by 49 publications

(26 citation statements)

References 52 publications

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“…A 2 μm thick composite layer containing Sn, Mg 2 Sn and chlorides was generated, and the as‐coated anode showed extended cycling performance with a simple Mg(TFSI) 2 /DME electrolyte. Similar results were later obtained by designing tridimensional Mg 3 Bi 2 scaffolds by treating magnesium foils with BiCl 3 /DME solutions [95] . The next logical step would be to evaluate protected magnesium in classical solvents such as organic carbonates to check their viability and possibly pave the way to high energy density Mg metal batteries.…”

Section: Other Directions For Alloy‐type Coatingsupporting

confidence: 58%

An Overview on Protecting Metal Anodes with Alloy‐Type Coating

Touja

Louvain

Stievano

et al. 2021

Batteries & Supercaps

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The current revival of lithium metal batteries (LMB) has been driven by both the search for high energy‐density systems and the development of solid‐state batteries. Lithium electrode surface engineering is crucial to limit both the dendritic growth and the electrolyte reduction. Among the various strategies to obtain protecting layers, there has been a recent growing interest in metal coatings forming alloys with lithium. Here, various strategies to coat lithium and other metal electrodes (sodium, potassium and magnesium) are reviewed and discussed with respect to their efficiency, versatility, and their possible practical transfer to the battery industry.

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Section: Other Directions For Alloy‐type Coatingsupporting

confidence: 58%

An Overview on Protecting Metal Anodes with Alloy‐Type Coating

Touja

Louvain

Stievano

et al. 2021

Batteries & Supercaps

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“…The electrochemical impedance spectroscopy (EIS) was also fitted to identify the surface layer effect (Figure 5d, Figure S20, and Table S5). The resistance corresponding to the intersection with the horizontal axis is the ohm resistance ( R s ), and the semicircular region is the overall interface resistance ( R int , including interphase resistance, R SEI , and charge‐transfer resistance, R ct ) [4b, 17] . The Nyquist plot in the Mg(TFSI) 2 /DME electrolyte displays a single semicircle.…”

Section: Resultsmentioning

confidence: 99%

Tailoring Coordination in Conventional Ether‐Based Electrolytes for Reversible Magnesium‐Metal Anodes

et al. 2022

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Rechargeable magnesium (Mg) batteries based on conventional electrolytes are seriously plagued by the formation of the ion‐blocking passivation layer on the Mg metal anode. By tracking the Mg2+ solvation sheath, this work links the passivation components to the Mg2+‐solvents (1,2‐dimethoxyethane, DME) coordination and the consequent thermodynamically unstable DME molecules. On this basis, we propose a methodology to tailor solvation coordination by introducing the additive solvent with extreme electron richness. Oxygen atoms in phosphorus‐oxygen groups compete with that in carbon‐oxygen groups of DME for the coordination with Mg2+, thus softening the solvation sheath deformation. Meanwhile, the organophosphorus molecules in the rearranged solvation sheath decompose on the Mg surface, increasing the Mg2+ transport and electrical resistance by three and one orders of magnitude, respectively. Consequently, the symmetric cells exhibit superior cycling performance of over 600 cycles with low polarization.

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“…Wan and co-workers have designed 3D Mg 3 Bi 2 scaffolds on the Mg anode surface to avoid the continuous passivation and to mitigate the degradation of the SEI. 88 The 3D Mg 3 Bi 2 scaffolds possess large specific surface areas, thus the current density is greatly reduced and the continuous passivation is avoided. Meanwhile, the uniform deposition appears due to the magnesiophilic characteristic of Mg 3 Bi 2 alloy.…”

Section: Anode Materials Improvement Strategiesmentioning

confidence: 99%

Current Design Strategies for Rechargeable Magnesium-Based Batteries

et al. 2021

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As a next-generation electrochemical energy storage technology, rechargeable magnesium (Mg)-based batteries have attracted wide attention because they possess a high volumetric energy density, low safety concern, and abundant sources in the earth's crust. While a few reviews have summarized and discussed the advances in both cathode and anode materials, a comprehensive and profound review focusing on the material design strategies that are both representative of and peculiar to the performance improvement of rechargeable Mg-based batteries is rare. In this mini-review, all nine of the material design strategies and approaches to improve Mgion storage properties of cathode materials have been comprehensively examined from both internal and external aspects. Material design concepts are especially highlighted, focusing on designing "soft" anion-based materials, intercalating solvated or complex ions, expanding the interlayer of layered cathode materials, doping heteroatoms into crystal lattice, size tailoring, designing metastable-phase materials, and developing organic materials. To achieve a better anode, strategies based on the artificial interlayer design, efficient electrolyte screening, and alternative anodes exploration are also accumulated and analyzed. The strategy advances toward Mg−S and Mg−Se batteries are summarized. The advantages and disadvantages of allcollected material design strategies and approaches are critically discussed from practical application perspectives. This minireview is expected to provide a clear research clue on how to rationally improve the reliability and feasibility of rechargeable Mg-based batteries and give some insights for the future research of Mg-based batteries as well as other multivalent-ion battery chemistries.

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Three-Dimensional Magnesiophilic Scaffolds for Reduced Passivation toward High-Rate Mg Metal Anodes in a Noncorrosive Electrolyte

Cited by 49 publications

References 52 publications

An Overview on Protecting Metal Anodes with Alloy‐Type Coating

An Overview on Protecting Metal Anodes with Alloy‐Type Coating

Tailoring Coordination in Conventional Ether‐Based Electrolytes for Reversible Magnesium‐Metal Anodes

Current Design Strategies for Rechargeable Magnesium-Based Batteries

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