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Advanced High-Voltage Aqueous Lithium-Ion Battery Enabled by 'Water-in-Bisalt' Electrolyte.
- Source :
- Angewandte Chemie International Edition; 6/13/2016, Vol. 55 Issue 25, p7136-7141, 6p
- Publication Year :
- 2016
-
Abstract
- A new super-concentrated aqueous electrolyte is proposed by introducing a second lithium salt. The resultant ultra-high concentration of 28 m led to more effective formation of a protective interphase on the anode along with further suppression of water activities at both anode and cathode surfaces. The improved electrochemical stability allows the use of TiO<subscript>2</subscript> as the anode material, and a 2.5 V aqueous Li-ion cell based on LiMn<subscript>2</subscript>O<subscript>4</subscript> and carbon-coated TiO<subscript>2</subscript> delivered the unprecedented energy density of 100 Wh kg<superscript>−1</superscript> for rechargeable aqueous Li-ion cells, along with excellent cycling stability and high coulombic efficiency. It has been demonstrated that the introduction of a second salts into the 'water-in-salt' electrolyte further pushed the energy densities of aqueous Li-ion cells closer to those of the state-of-the-art Li-ion batteries. [ABSTRACT FROM AUTHOR]
- Subjects :
- LITHIUM-ion batteries
ELECTROLYTES
ANODES
CATHODES
TITANIUM oxides
Subjects
Details
- Language :
- English
- ISSN :
- 14337851
- Volume :
- 55
- Issue :
- 25
- Database :
- Complementary Index
- Journal :
- Angewandte Chemie International Edition
- Publication Type :
- Academic Journal
- Accession number :
- 116036496
- Full Text :
- https://doi.org/10.1002/anie.201602397