Design of ionic liquid like monomers towards easy-accessible single-ion conducting polymer electrolytes

被引：38

作者：

Porcarelli, Luca ^{[1
,2
]}

Vlasov, Petr S. ^{[3
]}

Ponkratov, Denis O. ^{[4
]}

Lozinskaya, Elena I. ^{[4
]}

Antonov, Dmitrii Y. ^{[4
]}

Nair, Jijeesh R. ^{[2
,6
]}

Gerbaldi, Claudio ^{[2
]}

Mecerreyes, David ^{[1
]}

Shaplov, Alexander S. ^{[4
,5
]}

机构：

[1] Univ Basque Country UPV EHU, POLYMAT, Joxe Mari Korta Ctr, Avda Tolosa 72, Donostia San Sebastian 20018, Spain

[2] Politecn Torino, Dept Appl Sci & Technol DISAT, GAME Lab, Corso Duca Abruzzi 24, I-10129 Turin, Italy

[3] St Petersburg State Univ, Dept Macromol Chem, Univ Sky Pr 26, St Petersburg 198504, Russia

[4] Russian Acad Sci INEOS RAS, AN Nesmeyanov Inst Organoelement Cpds, Vavilov Str 28, Moscow 119991, Russia

[5] LIST, 5 Ave Hauts Fourneaux, L-4362 Esch Sur Alzette, Luxembourg

[6] Helmholtz Inst Munster HI MS IEK 12 Ion Energy St, Corrensstr 46, D-48149 Munster, Germany

来源：

EUROPEAN POLYMER JOURNAL | 2018年 / 107卷

关键词：

Poly(ionic liquid)s; Single-ion conductor; Lithium battery; Solid polymer electrolyte; Radical polymerization; BLOCK-COPOLYMER ELECTROLYTES; LITHIUM-METAL BATTERIES; DELOCALIZED POLYANION; TRANSFERENCE NUMBERS; TRIBLOCK COPOLYMERS; PERFORMANCE; SULFONATE; IMIDE; PEO;

D O I：

10.1016/j.eurpolymj.2018.08.014

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The rational design of single-ion polymer electrolytes emerges as a primary strategy for enhancing the performance of lithium ion batteries. With the aim to increase ionic conductivity, four novel ionic liquid monomers were designed and synthesized in high purity. Such monomers differ from the previously reported systems by (1) the presence of a long and flexible spacer between the methacrylate group and chemically bonded anion or (2) by a long perfluorinated side chain. The investigation of their free radical copolymerization with poly(ethylene glycol) methyl ether methacrylate (PEGM) allowed to identify the impact of thei copolymer composition on thermal and ion conducting properties. The copolymer based on lithium 3-[4-(2-(methacryloyloxy)ethoxy)-4-oxobutanoyl)oxy) propylsulfonyl]-1-(trifluoromethylsulfonyl)imide showed the highest ionic conductivity (1.9 x 10(-6) and 2 x 10(-5) S cm(-1) at 25 and 70 degrees C, respectively) at [EO]/[Li] = 61 ratio, along with a wide electrochemical stability (4.2 V vs. Li+/Li) and high lithium-ion transference number (0.91). The prepared copoly(ionic liquid)s (coPILs) were further applied for the assembly of Li/coPIL/LiFePO4 lithium-metal cells, which were capable to reversibly operate at 70 degrees C delivering relatively high specific capacity (up to 115 mAh g(-1)) at medium C/15 current rate.

引用

页码：218 / 228

页数：11

共 38 条

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