Beneficial effect of added water on sodium metal cycling in super concentrated ionic liquid sodium electrolytes

Basile, Andrew; Ferdousi, Shammi Akter; Makhlooghiazad, Faezeh; Yunis, Ruhamah; Hilder, Matthias; Forsyth, Maria; Howlett, Patrick C.

doi:10.1016/j.jpowsour.2018.01.044

Cited by 32 publications

(32 citation statements)

References 23 publications

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“…The effect of H 2 O as an additive to liquid electrolytes and its accompanying role on the stripping/plating performance of sodium metal was recently studied . The addition of 500 ppm of H 2 O to N ‐methyl‐ N ‐propylpyrrolidinium bis(fluorosulfonyl)imide promoted the decomposition of the bis(fluorosulfonyl)imide (FSI) anion, leading to the formation of a more regular SEI layer on sodium metal with lower polarization and smooth in morphology …”

Section: Additives For Metal Nbrbsmentioning

confidence: 99%

“…The effect of H 2 Oa sa na dditive to liquid electrolytes and its accompanying role on the stripping/plating performance of sodiumm etal was recently studied. [70,71] The addition of 500 ppm of H 2 Ot oN-methyl-N-propylpyrrolidinium bis(fluorosulfonyl)imide promoted the decomposition of the bis(fluorosulfonyl)imide (FSI) anion, leadingt ot he formation of am ore regularS EI layer on sodium metal with lower polarization and smooth in morphology. [71] Inspired by the analogues use of Li 2 S n ÀLiNO 3 in the LiÀSb attery,L ia nd co-workers evaluated sodium polysulfide( Na 2 S 6 ) alone and as ac oadditive with sodium nitrate (NaNO 3 )i n ether-based electrolyte.…”

Section: Additives For Metal Nbrbsmentioning

confidence: 99%

“…[70,71] The addition of 500 ppm of H 2 Ot oN-methyl-N-propylpyrrolidinium bis(fluorosulfonyl)imide promoted the decomposition of the bis(fluorosulfonyl)imide (FSI) anion, leadingt ot he formation of am ore regularS EI layer on sodium metal with lower polarization and smooth in morphology. [71] Inspired by the analogues use of Li 2 S n ÀLiNO 3 in the LiÀSb attery,L ia nd co-workers evaluated sodium polysulfide( Na 2 S 6 ) alone and as ac oadditive with sodium nitrate (NaNO 3 )i n ether-based electrolyte. Na 2 S 6 alone was found to improvet he electrochemical performance of the sodium-metal anode, even at ac urrent density as high as 10 mA cm À2 and ac apacity of 5mAh cm À2 over 100 cycles.…”

Section: Additives For Metal Nbrbsmentioning

confidence: 99%

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Electrolyte Additives for Room‐Temperature, Sodium‐Based, Rechargeable Batteries

Eshetu

Martínez‐Ibáñez

Sánchez-Díez

et al. 2018

Chemistry An Asian Journal

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Owing to resource abundance, and hence, a reduction in cost, wider global distribution, environmental benignity, and sustainability, sodium-based, rechargeable batteries are believed to be the most feasible and enthralling energy-storage devices. Accordingly, they have recently attracted attention from both the scientific and industrial communities. However, to compete with and exceed dominating lithium-ion technologies, breakthrough research is urgently needed. Among all non-electrode components of the sodium-based battery system, the electrolyte is considered to be the most critical element, and its tailored design and formulation is of top priority. The incorporation of a small dose of foreign molecules, called additives, brings vast, salient benefits to the electrolytes. Thus, this review presents progress in electrolyte additives for room-temperature, sodium-based, rechargeable batteries, by enlisting sodium-ion, Na-O /air, Na-S, and sodium-intercalated cathode type-based batteries.

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Section: Additives For Metal Nbrbsmentioning

confidence: 99%

Section: Additives For Metal Nbrbsmentioning

confidence: 99%

Section: Additives For Metal Nbrbsmentioning

confidence: 99%

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Electrolyte Additives for Room‐Temperature, Sodium‐Based, Rechargeable Batteries

Eshetu

Martínez‐Ibáñez

Sánchez-Díez

et al. 2018

Chemistry An Asian Journal

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“…However, adding water to IL‐based electrolyte systems has yielded interesting effects on both physicochemical properties and surface reactions, that is, changes at the anode/electrolyte interphase affecting the formation of the SEI . Our previous research showed that 50 mol % NaFSI in C 3 mpyrFSI resulted in the formation of very smooth Na surfaces with good cycle stability if 500 ppm water was added …”

Section: Introductionmentioning

confidence: 99%

“…[29][30][31][32][33] Our previousr esearch showedt hat 50 mol %N aFSI in C 3 mpyrFSI resulted in the formation of very smooth Na surfaces with good cycle stability if 500 ppm water was added. [34] Similarly,for Li metal it was reported that high water content (1 vol %) in aL iTFSI solutioni nN-methyl-N-propylpiperidinium bis-(trifluoromethanesulfonyl) imide (PP 13 TFSI) (0.352 mol kg À1 ) showeds table polarization potentials during cycling that resulted from the formation of as tabilizing interlayer in which water was actively involved. [35] Recently,i tw as shown that if high-concentration LiFSI salt was used in various ILs, stable Li cell cycling was possible at 1.0 mA cm À2 during 1hpolarization for 250 cycles at room temperature in the presence of approximately 5000ppm water.…”

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confidence: 96%

Water as an Effective Additive for High‐Energy‐Density Na Metal Batteries? Studies in a Superconcentrated Ionic Liquid Electrolyte

et al. 2019

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The effect of water on the properties of superconcentrated sodium salt solutions in ionic liquids (ILs) was investigated to design electrolytes for sodium battery applications with water as an additive. Water was added to a 50 mol % solution of NaFSI [FSI=bis(fluorosulfonyl)imide] in the ionic liquid N‐methyl‐N‐propylpyrrolidinium bis(fluorosulfonyl)imide (C3mpyrFSI). Although the thermal properties (e.g., glass transition temperature) showed little dependence on the water content, the viscosity and, in particular, the ionic conductivity were strongly affected. The Na|Na symmetrical cell cycling performance was strongly dependent on the applied current density as well as on the water content. At higher current densities (1.0 mA cm−2) the polarization profiles showed a water dependence, suggesting that water was actively involved in the formation of an improved solid electrolyte interface layer (SEI) for high‐water‐content samples (1000–5000 ppm), resulting in improved long‐term cycling stability. The initial impedance of cells cycled at 1.0 mA cm−2 (measured after 20 cycles) was elevated after water addition, and large polarizations occured for the “wet” samples. However, with further cycling the wet cells began to exhibit lower polarization and improved stability compared to the “dry” sample. The Na|NaFePO4 cell cycling performance was also demonstrated with minimal effect on the cell capacity, further highlighting the negligible activity of water in these electrolyte systems. In fact, reduced cell polarization and a more clearly defined charge profile were evident after water addition. The work shown here suggests that water may be used as a convenient and inexpensive additive for superconcentrated sodium IL electrolytes for improved device performance.

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Electrolytes for Sodium Batteries

et al. 2021

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Beneficial effect of added water on sodium metal cycling in super concentrated ionic liquid sodium electrolytes

Cited by 32 publications

References 23 publications

Electrolyte Additives for Room‐Temperature, Sodium‐Based, Rechargeable Batteries

Electrolyte Additives for Room‐Temperature, Sodium‐Based, Rechargeable Batteries

Water as an Effective Additive for High‐Energy‐Density Na Metal Batteries? Studies in a Superconcentrated Ionic Liquid Electrolyte

Electrolytes for Sodium Batteries

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