Revealing the solid electrolyte interface on calcium metal anodes

Zhao, Yumeng; Wang, Aoxuan; Ren, Libin; Liu, Xingjiang; Luo, Jiayan

doi:10.1016/j.jechem.2022.02.022

Cited by 11 publications

(4 citation statements)

References 110 publications

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“…To understand the issues surrounding the reversibility of calcium metal anodes, a fundamental understanding of the mechanisms of the SEI is required. 21,38,39 SEI compositions will differ depending on the system they exist in and the makeup of the cell. The SEI layer is formed via the electrochemical reduction of the solvent and salt within the electrolyte into organic and inorganic compounds onto the surface of an electrode, in this case an anode.…”

Section: Materials Advances Reviewmentioning

confidence: 99%

“…[18][19][20] There are two types of electrolyte and anode interactions employed by current CIB setups; one is a passivation layer forming on the calcium metal anodes surface via the breakdowns of metastable salts/solvents. 21 The main challenge with this method is the Caions lack of mobility through this passivation layer. The other mechanism is one in which no a passivation layer forms, which provides stability, but as this occurs usually with non-metallic anodes, the cell will function with a lower energy density.…”

Section: Introductionmentioning

confidence: 99%

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Exploring anodes for calcium-ion batteries

et al. 2023

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Section: Materials Advances Reviewmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Exploring anodes for calcium-ion batteries

et al. 2023

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“…However, there are only few studies in the literature devoted to the understanding of this passivation layer formation, as pointed out in recent review articles. [9,10] Previously, our group has studied the passivation layer formed in either Ca(BF 4 ) 2 or Ca(TFSI) 2 -based electrolytes. [11] It was noted that such layer formed with the Ca(BF 4 ) 2 salt is permeable to calcium cations, thus behaving as a solid electrolyte interphase (SEI), while the one formed with the Ca(TFSI) 2 salt is ionically blocking.…”

Section: Introductionmentioning

confidence: 99%

“…In order to optimize the plating/stripping reactions at the electrode, it is crucial to understand the formation mechanism of this layer, and identify possible components allowing for Ca 2+ migration. However, there are only few studies in the literature devoted to the understanding of this passivation layer formation, as pointed out in recent review articles [9,10] …”

Section: Introductionmentioning

confidence: 99%

Boron‐Based Functional Additives Enable Solid Electrolyte Interphase Engineering in Calcium Metal Battery

Bodin

Saboya

Jankowski

et al. 2022

Batteries & Supercaps

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Calcium-metal batteries have received growing attention recently after several studies reporting successful metal plating and stripping with organic electrolytes. Given the low redox potential of metallic calcium, its surface is commonly covered by a passivation layer grown by the accumulation of electrolyte decomposition products. The presence of borate species in this layer has been shown to be a key parameter allowing for Ca 2 + migration and favoring Ca electrodeposition. Here, boron-based additives are evaluated in order to tune the SEI composition, morphology, and properties. The decomposition of a BF 3 -based additive is studied at different potentiostatic steps and the resulting SEI layer was thoroughly characterized. SEI growth mechanism is proposed based on both experimental data and DFT calculations pointing at the formation of boron-crosslinked polymeric matrices. Several boron-based adducts are explored as SEI-forming additives for calcium-metal batteries paving the way to very rich chemistry leading to Ca 2 + conducting SEI.

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Challenges and Progress in Anode‐Electrolyte Interfaces for Rechargeable Divalent Metal Batteries

Wang,

Riedel,

Zhao‐Karger

2024

Advanced Energy Materials

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Divalent metal batteries have attracted considerable attention in scientific exploration for sustainable energy storage solutions owing to the abundant reserves of magnesium (Mg) and calcium (Ca), the competitive low redox potentials of the Mg/Mg2+ (–2.37 V vs SHE) and Ca/Ca2+ (–2.87 V vs SHE) couples, as well as the high theoretical capacities of both metal anodes. However, the development of these batteries faces fundamental challenges stemming from the limited cycling stability and efficiency of Mg/Ca metal anodes. These issues primarily originate from the sluggish electrochemical redox kinetics of the divalent metals, particularly at the anode‐electrolyte interfaces. This comprehensive review provides an up‐to‐date overview of advancements in the field of the anode‐electrolyte interface for divalent metal batteries, covering aspects ranging from its formation, morphology, and composition to their influence on the reversible electrochemical deposition of divalent metals. Recent approaches aimed at enhancing the performance of metallic Mg and Ca anodes across various electrolytes are summarized and discussed, with the goal of providing insights for the development of new strategies in future research.

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Revealing the solid electrolyte interface on calcium metal anodes

Cited by 11 publications

References 110 publications

Exploring anodes for calcium-ion batteries

Exploring anodes for calcium-ion batteries

Boron‐Based Functional Additives Enable Solid Electrolyte Interphase Engineering in Calcium Metal Battery

Challenges and Progress in Anode‐Electrolyte Interfaces for Rechargeable Divalent Metal Batteries

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