Improved electrolytes for Li-ion batteries: Mixtures of ionic liquid and organic electrolyte with enhanced safety and electrochemical performance

Guerfi, Abdelbast; Dontigny, Martin; Charest, Patrick; Petitclerc, Michel; Lagacé, Marin; Vijh, Ashok K.; Zaghib, Karim

doi:10.1016/j.jpowsour.2009.08.056

Cited by 342 publications

(253 citation statements)

References 16 publications

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“…Regardless of its high working potential, the material exhibits relatively low coulombic efficiency and poor specific capacity compared with other reported Fe-or Co-based polyanionic compounds in both organic and ionic liquid electrolytes. 36,37 The inferior electrochemical behavior of the Ni-based compound with respect to Fe-and Co-based analogs may be attributed to the intrinsic lower ionic conductivity of the former material. Sanz et al 12 have reported that the Ni-based compound exhibits the lowest ionic conductivity of ∼ 2.1 × 10 − 7 S cm − 1 at 300°C, with respect to Fe, Mn and Co.…”

Section: Exploring the Ni Redox Activity In Polyanionic Compoundsmentioning

confidence: 99%

Exploring the Ni redox activity in polyanionic compounds as conceivable high potential cathodes for Na rechargeable batteries

et al. 2017

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Although nickel-based polyanionic compounds are expected to exhibit a high operating voltage for batteries based on the Ni 2+/3+ redox couple activity, some rare experimental studies on the electrochemical performance of these materials are reported, resulting from the poor kinetics of the bulk materials in both Li and Na nonaqueous systems. Herein, the electrochemical activity of the Ni 2+/3+ redox couple in the mixed-polyanionic framework Na 4 Ni 3 (PO 4 ) 2 (P 2 O 7 ) is reported for the first time. This novel material exhibits a remarkably high operating voltage when cycled in sodium cells in both carbonate-and ionic liquid-based electrolytes. The application of a carbon coating and the use of an ionic liquid-based electrolyte enable the reversible sodium ion (de-)insertion in the host structure accompanied by the redox activity of Ni 2+/3+ at operating voltages as high as 4.8 V vs Na/Na + . These results present the realization of Ni-based mixed polyanionic compounds with improved electrochemical activity and pave the way for the discovery of new Na-based high potential cathode materials. NPG Asia Materials (2017) 9, e370; doi:10.1038/am.2017.41; published online 31 March 2017 INTRODUCTION Lithium-ion batteries have been largely recognized as the most efficient electrochemical energy storage devices for both portable electronics and electric vehicle applications. 1,2 However, the growth and diversification of the energy storage market trigger interest in low-cost and environmentally friendly alternative systems. In addition, recent concerns over the cost and future availability of lithium highlight the urgent need to exploit alternative energy storage systems. 3 In these terms, sodium (Na)-ion batteries are attractive candidates because of the electrochemistry that is similar to the well-established lithium-ion technology. 4 To date, the LiFePO 4 olivine with (PO 4 ) 3 − polyanionic framework, owing to its superior thermal stability and low cost, is considered to be one of the best electrode materials for lithium-ion batteries, mostly in view of its stable operating voltage and satisfactory specific capacity. However, the intrinsic tunability of the operating voltage of polyanionic compounds because of the presence of different transition metals such as Mn, Co and Ni 5-7 has triggered interest in alternative frameworks exhibiting higher cell voltages. According to theoretical prediction, lithium nickel phosphate has a remarkably high working potential (~5.1 V vs Li + /Li) because of the Ni 2+/3+ redox activity. 8 Unfortunately, several studies have demonstrated that the implementation of this material is restricted by several drawbacks such as the intrinsic sluggish kinetics attributable to the low electronic conductivity, the poor lithium transport in commonly used electrolyte systems and the structural

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Section: Exploring the Ni Redox Activity In Polyanionic Compoundsmentioning

confidence: 99%

Exploring the Ni redox activity in polyanionic compounds as conceivable high potential cathodes for Na rechargeable batteries

et al. 2017

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“…It was originally proposed in 2003 by Ohzuku and co-workers 19 and in 2004 by us 20 , and it is presently exploited in various laboratories 21,22 . With this work, we have marked a step forward in the fi eld as the LTO / LNMO battery here reported shows rate, life and energy performance, to our knowledge, never reached before.…”

Section: Batterymentioning

confidence: 99%

A high-rate long-life Li4Ti5O12/Li[Ni0.45Co0.1Mn1.45]O4 lithium-ion battery

et al. 2011

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Lithium batteries are receiving considerable attention as storage devices in the renewable energy and sustainable road transport fi elds. However, low-cost, long-life lithium batteries with higher energy densities are required to facilitate practical application. Here we report a lithium-ion battery that can be cycled at rates as high as 10 C has a life exceeding 500 cycles and an operating temperature range extending from − 20 to 55 ° C. The estimated energy density is 260 W h kg − 1 , which is considerably higher than densities delivered by the presently available Li-ion batteries.

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“…Salt liquids at room temperature, usually called room temperature ionic liquids or simply ionic liquids (IL), show considerable thermal stability, a wide liquid-phase range, non-flammability, negligible vapor pressure, and broad electrochemical stability [8][9][10]. Ionic liquids have been proposed as potential electrolytes for electrochemical capacitors and lithium-ion batteries, mainly due to their nonvolatility and hence, non-flammability [8,[11][12][13][14][15][16][17][18][19][20]. Among ILs, those based on 1-ethyl-3-methyl-imidazolium [ [12,13,18,19,[21][22][23], as well as with graphite, LaSi 2 /Si and TiO 2 nanotube anodes [14,20,24,25].…”

Section: Introductionmentioning

confidence: 99%

“…Ionic liquids have been proposed as potential electrolytes for electrochemical capacitors and lithium-ion batteries, mainly due to their nonvolatility and hence, non-flammability [8,[11][12][13][14][15][16][17][18][19][20]. Among ILs, those based on 1-ethyl-3-methyl-imidazolium [ [12,13,18,19,[21][22][23], as well as with graphite, LaSi 2 /Si and TiO 2 nanotube anodes [14,20,24,25]. Recently, ionic liquids based on imidazolium and piperidinium cations with vinyl or allyl groups and [NTf 2 − ] anion are of great interest as co-solvents for the Li-ion battery (LiNi 0.5 Mn 1.5 O 4 and LiFePO 4 ) [26,27].…”

Section: Introductionmentioning

confidence: 99%

Properties of LiMn2O4 cathode in electrolyte based on ionic liquid with and without gamma-butyrolactone

Swiderska‐Mocek

2013

J Solid State Electrochem

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LiMn 2 O 4 was examined as a cathode material for the lithium-ion battery, working together with a room temperature ionic liquid electrolyte, obtained by dissolution of solid lithium bis(trifluoromethanesulphonyl)imide (LiNTf 2 ) in liquid N-methyl-N-propylpyrrolidinium bis (trifluoromethanesulphonyl) imide (MePrPyrNTf 2 ) with and without gamma-butyrolactone (GBL). The Li/LiMn 2 O 4 cell was tested by cyclic voltammetry, galvanostatic charging/ discharging, and with impedance spectroscopy. In the cyclic voltammograms for these electrolytes pairs of oxidation current peaks and reduction current peaks for the cathode are distinct, revealing typical characteristics of two-stage reversible-phase transformation of the spinel. The LiMn 2 O 4 cathode showed good cyclability and Coulombic efficiency (126 mAh g −1 after 50 cycles) working together with 0.7 M LiNTf 2 in MePrPyrNTf 2 +10 wt%. GBL ionic liquid electrolyte. At the C/7and C/5 rates, the LiMn 2 O 4 showed stable capacities of 124 and 120 mAh g −1 , respectively. Scanning electron microscopy images of pristine electrodes and those taken after electrochemical cycling showed changes which may be interpreted as a result of solid electrolyte interphase formation. The 0.7 M LiNTf 2 in MePrPyrNTf 2 and 0.7 M LiNTf 2 in MePrPyrNTf 2 +10 wt%. GBL electrolytes have a greater thermal stability range (no peak is observed below 230°C).

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Improved electrolytes for Li-ion batteries: Mixtures of ionic liquid and organic electrolyte with enhanced safety and electrochemical performance

Cited by 342 publications

References 16 publications

Exploring the Ni redox activity in polyanionic compounds as conceivable high potential cathodes for Na rechargeable batteries

Exploring the Ni redox activity in polyanionic compounds as conceivable high potential cathodes for Na rechargeable batteries

A high-rate long-life Li4Ti5O12/Li[Ni0.45Co0.1Mn1.45]O4 lithium-ion battery

Properties of LiMn2O4 cathode in electrolyte based on ionic liquid with and without gamma-butyrolactone

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