"Water-in-ionic liquid" solutions towards wide electrochemical stability windows for aqueous rechargeable batteries

被引：48

作者：

Zhang, Yonglai ^{[1
,2
]}

Ye, Ruijie ^{[1
,2
]}

Henkensmeier, Dirk ^{[3
,4
]}

Hempelmann, Rolf ^{[1
,2
]}

Chen, Ruiyong ^{[1
,2
]}

机构：

[1] Saarland Univ, Transferctr Sustainable Electrochem, D-66125 Saarbrucken, Germany

[2] KIST Europe, D-66123 Saarbrucken, Germany

[3] Korea Inst Sci & Technol, Fuel Cell Res Ctr, Seoul 02792, South Korea

[4] Univ Sci & Technol, Div Energy & Environm Technol, Seoul 02792, South Korea

来源：

ELECTROCHIMICA ACTA | 2018年 / 263卷

关键词：

Water-in-ionic liquid" electrolytes; Electrochemical stability windows; Aqueous rechargeable batteries; FLOW BATTERIES; ANATASE TIO2; ELECTROLYTES; BEHAVIOR; DENSITY; STORAGE; ARRAYS; LI;

D O I：

10.1016/j.electacta.2018.01.050

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Several hydrophilic ionic liquids dissolved in water with different molalities are studied as "water-in-ionic liquid" supporting electrolytes. They exhibit wide electrochemical stability window from 3 to 4.4 V, high ionic conductivities and good flowability, making them promising supporting electrolytes for aqueous high-voltage rechargeable batteries. In such supporting electrolytes, enhanced redox activities of lithium insertion/ extraction in anodic TiO2 film at low negative potential and Fe3+/Fe2+ couple at moderate positive potential were observed. Cyclability of an aqueous TiO2/Fe2+ hybrid battery is demonstrated with a voltage of 1.7 V. (c) 2018 Elsevier Ltd. All rights reserved.

引用

页码：47 / 52

页数：6

共 35 条

[31] Nanocrystalline anatase TiO2: a new anode material for rechargeable sodium ion batteries [J].