Impact of the electrolyte salt anion on the solid electrolyte interphase formation in sodium ion batteries

Eshetu, Gebrekidan Gebresilassie; Diemant, Thomas; Hekmatfar, Maral; Grugeon, Sylvie; Behm, R. Jürgen; Laruelle, Stéphane; Armand, Michel; Passerini, Stefano

doi:10.1016/j.nanoen.2018.10.040

Cited by 225 publications

(182 citation statements)

References 59 publications

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“…The same group investigated in detail the SEI composition at the HC surface employing different Na salts, i.e., NaPF 6 , NaClO 4 , NaTFSI, NaFSI, and NaFTFSI, all dissolved in EC:DEC (1:1, wt). [ 300 ] The authors evidenced the key role of the Na salt in determining the overall SEI layer composition, including its depth evolution and thickness. The SEI building species formed on HC by the solvent reduction were found to decrease with the various salts in the order: NaPF 6 > NaClO 4 ≈ NaTFSI > NaFTFSI > NaFSI.…”

Section: Electrode/electrolyte Interphases In Sodium Batteriesmentioning

confidence: 99%

Electrolytes and Interphases in Sodium‐Based Rechargeable Batteries: Recent Advances and Perspectives

Eshetu

Elia

Armand

et al. 2020

Advanced Energy Materials

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277

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technologies. Unlike lithium, whose market is already very tight, sodium mineral deposits are almost infinite, evenly distributed worldwide, much easier to extract and thereby attainable at low cost. [1][2][3][4] If the realization of Na-rechargeable batteries could be practically possible, there will be nearly three orders of magnitude relaxation in the constraints on lithium-based resources, accompanied by sustainability, improved environmental benevolence, and cost reduction ( Table 1). Even more appealing is the possible use of the widely available and lighter aluminum, rather than copper, as negative current collector and hard carbon from renewable sources instead of graphite for the negative electrode. Finally, the stability of sodium-ion batteries (SIBs) in the fully discharged state would significantly enhance the safety associated with the shipment of large-format SIBs worldwide.These beneficial features of sodiumbased cells revived the research work on Na-based rechargeable batteries and accordingly captured the attention of both the academic research and industry sectors. However, similar to LIB, most of the research work in Na-based batteries have focused on the development and elaboration of negative and positive For sodium (Na)-rechargeable batteries to compete, and go beyond the currently prevailing Li-ion technologies, mastering the chemistry and accompanying phenomena is of supreme importance. Among the crucial components of the battery system, the electrolyte, which bridges the highly polarized positive and negative electrode materials, is arguably the most critical and indispensable of all. The electrolyte dictates the interfacial chemistry of the battery and the overall performance, having an influence over the practical capacity, rate capability (power), chemical/thermal stress (safety), and lifetime. In-depth knowledge of electrolyte properties provides invaluable information to improve the design, assembly, and operation of the battery. Thus, the full-scale appraisal of both tailored electrolytes and the concomitant interphases generated at the electrodes need to be prioritized. The deployment of large-format Na-based rechargeable batteries also necessitates systematic evaluation and detailed appraisal of the safety-related hazards of Na-based batteries. Hence, this review presents a comprehensive account of the progress, status, and prospect of various Na + -ion electrolytes, including solvents, salts and additives, their interphases and potential hazards.

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Section: Electrode/electrolyte Interphases In Sodium Batteriesmentioning

confidence: 99%

Electrolytes and Interphases in Sodium‐Based Rechargeable Batteries: Recent Advances and Perspectives

Eshetu

Elia

Armand

et al. 2020

Advanced Energy Materials

Self Cite

277

258

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show abstract

“…Electrochemical stability is also a significant evaluation criterion for sodium salts, when it comes to the stable and protective interphase on electrodes. In addition, sodium salts should remain chemically inert toward other battery components, such as electrodes, separators, and current collectors . As a result, these strict requirements have ruled out many prospective candidates, so that the available choice of sodium salts, nowadays, is quite limited.…”

Section: Carbonate Ester‐based Electrolytesmentioning

confidence: 99%

Section: Carbonate Ester‐based Electrolytesmentioning

confidence: 99%

“…B-E, reproduced with permission. 53 Copyright 2019, Elsevier. DEC, diethyl carbonate; EC, ethylene carbonate; HC, hard carbon; SEI, solid-electrolyte interphase It is also proposed that the sudden failure of sodium-ion cells occurs as long as all of the FEC is totally consumed, in a similar failure mechanism of Si-based LIBs, where strong evidence has been given for the continuous consumption of FEC.…”

Section: Additives In Ester-based Electrolytesmentioning

confidence: 99%

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Recent research progresses in ether‐ and ester‐based electrolytes for sodium‐ion batteries

Lin

Xia

Wang

et al. 2019

InfoMat

198

151

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Owing to the natural abundance and low cost of sodium resources, sodium‐ion batteries (SIBs) have drawn considerable attention for state‐of‐the‐art power storage devices over the last few years. To enable advanced SIBs with a brighter future, great effort has been made, not only through optimizing the electrode materials, but also with rationally designing various electrolyte systems. Among the available electrolyte systems, organic electrolytes, especially those based on esters as well as ethers, are the most promising ones for practical application in the foreseeable future, due to their numerous inherent advantages. This review is concerned with the recent research progresses on organic electrolytes for SIBs, focusing on ether‐based and ester‐based ones.

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“…It should be insoluble in the electrolyte and stable over a wide range of temperatures and voltages. The factors that affect the properties of the SEI layer are depicted in figure 2 [17,27].…”

Section: Introductionmentioning

confidence: 99%

Active formation of Li-ion batteries and its effect on cycle life

et al. 2019

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The formation of the solid electrolyte interphase during the formation and conditioning steps, is a very time consuming and expensive process. We present an active formation method in LiNi 1/3 Mn 1/3 Co 1/3 O 2 (NMC-111) versus graphite lithium-ion batteries, which maintains the cycling performance of the cells. Ten different active formation protocols were evaluated, which consisted of cycling between an upper (V u ) and lower (V l ) voltages. The cells were evaluated using electrochemical impedance spectroscopy (EIS) and cycling. X-ray photoelectron spectroscopy was used to analyse the surface of the electrodes after cycling. Cycling performance and resistance measurements from the EIS results confirm the different effect of formation protocols in the lifetime and performance of the cells. We show that during the formation protocol the interface composition is optimised through the transport of lithium ions through the initial organic decomposition layer on the graphite at higher cell voltages (>3.65 V). These higher voltage cycling formation protocols giving an interface with greater stability and enhanced cycling are observed in the cells.

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Impact of the electrolyte salt anion on the solid electrolyte interphase formation in sodium ion batteries

Cited by 225 publications

References 59 publications

Electrolytes and Interphases in Sodium‐Based Rechargeable Batteries: Recent Advances and Perspectives

Electrolytes and Interphases in Sodium‐Based Rechargeable Batteries: Recent Advances and Perspectives

Recent research progresses in ether‐ and ester‐based electrolytes for sodium‐ion batteries

Active formation of Li-ion batteries and its effect on cycle life

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