Lithium salt with a super-delocalized perfluorinated sulfonimide anion as conducting salt for lithium-ion cells: Physicochemical and electrochemical properties

Zhang, Heng; Han, Hongjing; Cheng, Xiaorong; Zheng, Liping; Cheng, Pengfei; Feng, Wenfang; Nie, Jun; Armand, Michel; Huang, Xuejie; Zhou, Zhibin

doi:10.1016/j.jpowsour.2015.07.026

Cited by 36 publications

(31 citation statements)

References 71 publications

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“…Replacing a = Og roup in above À SO 2 ÀN (À) ÀSO 2 ÀCF 3 structure by as trong electron-withdrawing group, =NSO 2 CF 3 ,c an create much more delocalized anion structure (ÀSO 2 ÀN (À) ÀSO(=NSO 2 CF 3 )ÀCF 3 ,s TFSI À ), in which the Li + cations would be highly dissociated from this super-delocalized anion when mixed with ap olymer media (that is,P EO), so that conductivities can be further improved. [24] Thep rocedures for preparing the monomeric and polymeric salts are detailed in the Supporting Information. The structure and composition of the monomer (KSsTFSI), intermediate (KPSsTFSI), and target salt (LiPSsTFSI) were characterized by 1 Ha nd 19 FNMR (Supporting Information, Figure S1).…”

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confidence: 99%

Single Lithium‐Ion Conducting Polymer Electrolytes Based on a Super‐Delocalized Polyanion

et al. 2016

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A novel single lithium-ion (Li-ion) conducting polymer electrolyte is presented that is composed of the lithium salt of a polyanion, poly[(4-styrenesulfonyl)(trifluoromethyl(S-trifluoromethylsulfonylimino)sulfonyl)imide] (PSsTFSI(-)), and high-molecular-weight poly(ethylene oxide) (PEO). The neat LiPSsTFSI ionomer displays a low glass-transition temperature (44.3 °C; that is, strongly plasticizing effect). The complex of LiPSsTFSI/PEO exhibits a high Li-ion transference number (tLi (+) =0.91) and is thermally stable up to 300 °C. Meanwhile, it exhibits a Li-ion conductivity as high as 1.35×10(-4) S cm(-1) at 90 °C, which is comparable to that for the classic ambipolar LiTFSI/PEO SPEs at the same temperature. These outstanding properties of the LiPSsTFSI/PEO blended polymer electrolyte would make it promising as solid polymer electrolytes for Li batteries.

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Single Lithium‐Ion Conducting Polymer Electrolytes Based on a Super‐Delocalized Polyanion

et al. 2016

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“…The symmetric cell of Li j (SI) 2 PE j Li was assembled for the lithium ion transference number (LTN). And the LTN was tested by chronoamperometry methods by an electrochemical workstation (Autolab), and calculated by following equation: [6] t þ ¼…”

Section: Assemble Of the Batteriesmentioning

confidence: 99%

“…Since Wright reported the polyethylene oxide (PEO) and alkali salt ionic conductive system in 1973, [2] the solid state polymer electrolytes (SPEs) have aroused wide attention for their high safety insurance, excellent flexibility, easy design and good formability, as well as the improved resistance to the volume change of the electrodes during the charge and discharge process. [3][4][5][6][7][8][9][10] The SPEs consisted usually by a lithium salt mixed with polymer matrix are mostly formed with the dual-ion lithium salt and the polymer matrix with low glass transition temperature (T g ) to gain a high ionic conductivity. However, the Li-ion transference number (t Li + ), which means the ratio of Li + part in the all ionic conduction, is only around 0.3 in the dual electrolyte system.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the LiFePO 4 /Li batteries' cycle results show a high discharge capacity of 140.0 mAh/g and a retention of 90.4 % after 100 cycles at the rate of 0.2 C.[a] X. off, and store at 60°C in vacuum oven for 3 days to ensure full drying due to that water in PEO is not easy to remove . [43] Then the solid (SI) 2 PE with different complex ratio ((SI) 2 PE-x-y) membranes were obtained (x-y is the mass ratio of PEO: [4][5][6].…”

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Semi‐Interpenetrating Network‐Structured Single‐Ion Conduction Polymer Electrolyte for Lithium‐Ion Batteries

Shen

Peng

et al. 2019

ChemElectroChem

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A novel quasi solid single‐ion polymer electrolyte with semi‐interpenetrating network (semi‐IPN) structure has been prepared. The lithium‐ion conduction membrane is composed of both the cross‐linked lithiated poly‐2‐acrylamido‐2‐methylpropane sulfonic acid (PAMPS‐Li) as a polyanionic single‐ion lithium salt source and the high molecular weight polyethylene oxide (PEO) as a polymer matrix, in which the two components show great compatibility due to the special semi‐IPN structure. For such quasi‐solid electrolyte system, we have particularly studied the crystallinity variety and ionic conductivity change with a series of polymer salt concentration. The results show that the electrolyte has an appropriate mechanical stability, minimal crystallinity, and acceptable ionic conductivity of 1.34×10−5 S/cm at 60 °C. Furthermore, the lithium‐ion conduction membrane shows the lithium‐ion dominating conductive property and high transport number of 0.77. Moreover, the LiFePO4/Li batteries’ cycle results show a high discharge capacity of 140.0 mAh/g and a retention of 90.4 % after 100 cycles at the rate of 0.2 C.

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“…[24] Thep rocedures for preparing the monomeric and polymeric salts are detailed in the Supporting Information. Replacing a = Og roup in above À SO 2 ÀN (À) ÀSO 2 ÀCF 3 structure by as trong electron-withdrawing group, =NSO 2 CF 3 ,c an create much more delocalized anion structure (ÀSO 2 ÀN (À) ÀSO(=NSO 2 CF 3 )ÀCF 3 ,s TFSI À ), in which the Li + cations would be highly dissociated from this super-delocalized anion when mixed with ap olymer media (that is,P EO), so that conductivities can be further improved.…”

mentioning

confidence: 99%

Single Lithium‐Ion Conducting Polymer Electrolytes Based on a Super‐Delocalized Polyanion

Zhang

Zhou

et al. 2016

Angewandte Chemie

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An ovel single lithium-ion (Li-ion) conducting polymer electrolyte is presented that is composed of the lithium salt of ap olyanion, poly[(4-styrenesulfonyl)(trifluoromethyl(S-trifluoromethylsulfonylimino)sulfonyl)imide] (PSsTFSI À ), and high-molecular-weight poly(ethylene oxide) (PEO). The neat LiPSsTFSI ionomer displays al ow glasstransition temperature (44.3 8 8C; that is,s trongly plasticizing effect). The complex of LiPSsTFSI/PEO exhibits ahigh Li-ion transference number (t Li + = 0.91) and is thermally stable up to 300 8 8C. Meanwhile,itexhibits aLi-ion conductivity as high as 1.35 10 À4 Scm À1 at 90 8 8C, which is comparable to that for the classic ambipolar LiTFSI/PEO SPEs at the same temperature. These outstanding properties of the LiPSsTFSI/PEO blended polymer electrolyte would make it promising as solid polymer electrolytes for Li batteries.

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Lithium salt with a super-delocalized perfluorinated sulfonimide anion as conducting salt for lithium-ion cells: Physicochemical and electrochemical properties

Cited by 36 publications

References 71 publications

Single Lithium‐Ion Conducting Polymer Electrolytes Based on a Super‐Delocalized Polyanion

Single Lithium‐Ion Conducting Polymer Electrolytes Based on a Super‐Delocalized Polyanion

Semi‐Interpenetrating Network‐Structured Single‐Ion Conduction Polymer Electrolyte for Lithium‐Ion Batteries

Single Lithium‐Ion Conducting Polymer Electrolytes Based on a Super‐Delocalized Polyanion

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