Improved cycling performances of lithium sulfur batteries with LiNO3-modified electrolyte

Liang, Xiao; Zhang, Wen; Liu, Yu; Wu, Mingmei; Jin, Jun; Zhang, Hao; Wu, Xiaofeng

doi:10.1016/j.jpowsour.2011.08.027

Cited by 453 publications

(292 citation statements)

References 21 publications

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“…However, the protective layer can only prevent further reaction between the lithium polysulphide and the lithium anode, it is unable to inhibit the dissolution of lithium polysulphide into the electrolyte, which results in instability in terms of long cycling 16,46 . Finally protecting the metallic lithium anode using inorganic solid electrolyte layer prevents any soluble polysulphide reaching the lithium metal, but the brittleness of such materials prevents their use in large-surface practical systems 47,48 .…”

Section: Resultsmentioning

confidence: 99%

A new class of Solvent-in-Salt electrolyte for high-energy rechargeable metallic lithium batteries

et al. 2013

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Liquid electrolyte plays a key role in commercial lithium-ion batteries to allow conduction of lithium-ion between cathode and anode. Traditionally, taking into account the ionic conductivity, viscosity and dissolubility of lithium salt, the salt concentration in liquid electrolytes is typically less than 1.2 mol l À 1 . Here we show a new class of 'Solvent-in-Salt' electrolyte with ultrahigh salt concentration and high lithium-ion transference number (0.73), in which salt holds a dominant position in the lithium-ion transport system. It remarkably enhances cyclic and safety performance of next-generation high-energy rechargeable lithium batteries via an effective suppression of lithium dendrite growth and shape change in the metallic lithium anode. Moreover, when used in lithium-sulphur battery, the advantage of this electrolyte is further demonstrated that lithium polysulphide dissolution is inhibited, thus overcoming one of today's most challenging technological hurdles, the 'polysulphide shuttle phenomenon'. Consequently, a coulombic efficiency nearing 100% and long cycling stability are achieved.

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Section: Resultsmentioning

confidence: 99%

A new class of Solvent-in-Salt electrolyte for high-energy rechargeable metallic lithium batteries

et al. 2013

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“…The results point out that LiNO 3 could migrate quickly in low-viscosity DOL/DME electrolyte and be reduced to rapidly form an in-situ Li x NO y protective film, thus completely eliminating the detrimental overcharge phenomenon [21][22][23]. However, the migration of LiNO 3 in high-viscosity PEGDME might be slower, however, and thus only hinder the overcharge effect.…”

Section: Resultsmentioning

confidence: 90%

“…4(b). It is well known that LiNO 3 in the electrolyte is favorable to form an in-situ passivation film on the lithium electrode, preventing polysulfides in the electrolyte from directly reacting with the lithium metal and thus reduce the shuttle effect [21][22][23].…”

Section: Resultsmentioning

confidence: 99%

“…It demonstrates that the ionic resistance of the DOL/DME electrolyte is lower than the PEGDME electrolyte, probably ascribed to the lower viscosity of the DOL/DME electrolyte. R SEI of the cathodes slightly decrease due to the addition of LiNO 3 , which results from the passive film formed on the surface of lithium, protecting the lithium from further corrosion in the electrolyte, therefore, forming thinner SEI films than those without LiNO 3 [21]. Rct of the cathodes are calculated to be 594.6 Ω, 62 Ω, 602.0 Ω and 376.9 Ω in DOL/DME, DOL/DME+ LiNO 3 , PEGDME, and PEGDME+LiNO 3 electrolytes, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…Exploiting polar organic solvents, however, such as 1,3-dioxolane (DOL), dimethoxyethane (DME), and tetra(ethylene glycol) dimethyl ether (TEGDME), can alleviate this problem by dissolve polysufides to some extent, but at the cost of inducing the internal shuttle phenomenon [19,20], causing fast capacity fading and severely low Coulombic efficiency. Much effort is being devoted to alleviating this phenomenon by modifying the surface of Li anode, especially by inducing LiNO 3 additive in the electrolyte can form an in-situ protective surface film on the lithium foil [21][22][23]. Therefore, it is well recognized that the electrolyte plays a crucial role in the realization of Li/S applications.…”

Section: Introductionmentioning

confidence: 99%

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The electrochemical properties of high-capacity sulfur/reduced graphene oxide with different electrolyte systems

Wang

Chou

Liu

et al. 2013

Journal of Power Sources

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Dou, S. Xue. (2013). The electrochemical properties of high-capacity sulfur/reduced graphene oxide with different electrolyte systems. Journal of Power Sources, 244 (December), 240-245.The electrochemical properties of high-capacity sulfur/reduced graphene oxide with different electrolyte systems AbstractThe lithium/sulfur battery is a promising electrochemical system with high capacity, which is well-known to undergo a complex multistep reaction during the discharge process. Two types of electrolytes including poly (ethylene glycol) dimethyl ether (PEGDME)-based and 1.3 -dioxolane (DOL)/ dimethoxyethane (DME)-based electrolytes were investigated here. Furthermore, LiNO3 additive was introduced into the electrolyte in order to effectively eliminate the overcharge effect. The lithium sulfur battery with 1.0 M LiN(CF3SO2)2 in PEGME with 0.1 M LiNo3 shows highly stable reversible capacity of 624.8 mAh g-1 after 200 cycles and improved average coulombic efficiency of 98 percent. AbstractThe lithium/sulfur battery is a promising electrochemical system with high capacity, which is well-known to undergo a complex multistep reaction during the discharge process. Two types of electrolytes including poly(ethylene glycol) dimethyl ether (PEGDME)-based and 1,3-dioxolane (DOL)/dimethoxyethane (DME)-based electrolytes were investigated here. Furthermore, LiNO 3 additive was introduced into the electrolyte in order to effectively eliminate the overcharge effect. The lithium sulfur battery with 1.0 M LiN(CF 3 SO 2 ) 2 in PEGDME with 0.1M LiNO 3 shows highly stable reversible capacity of 624.8 mAh g -1 after 200 cycles and improved average coulombic efficiency of 98 %.

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Hybrid Nanostructured Materials for Advanced Lithium Batteries

Choudhury

Stamm

2017

Hybrid Nanomaterials

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Improved cycling performances of lithium sulfur batteries with LiNO3-modified electrolyte

Cited by 453 publications

References 21 publications

A new class of Solvent-in-Salt electrolyte for high-energy rechargeable metallic lithium batteries

A new class of Solvent-in-Salt electrolyte for high-energy rechargeable metallic lithium batteries

The electrochemical properties of high-capacity sulfur/reduced graphene oxide with different electrolyte systems

Hybrid Nanostructured Materials for Advanced Lithium Batteries

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