Journal Article10.1002/ANIE.201602397
Advanced High-Voltage Aqueous Lithium-Ion Battery Enabled by "Water-in-Bisalt" Electrolyte.
Liumin Suo,Oleg Borodin,Wei Sun,Xiulin Fan,Chongyin Yang,Fei Wang,Tao Gao,Zhaohui Ma,Marshall A. Schroeder,Arthur v. Cresce,Selena M. Russell,Michel Armand,Austen Angell,Kang Xu,Chunsheng Wang +14 more
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TL;DR: It has been demonstrated that the introduction of a second salts into the "water-in-salt" electrolyte further pushed the energy densities of aqueousLi-ion cells closer to those of the state-of-the-art Li-ion batteries.
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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 TiO2 as the anode material, and a 2.5 V aqueous Li-ion cell based on LiMn2O4 and carbon-coated TiO2 delivered the unprecedented energy density of 100 Wh kg−1 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.
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Citations
Modeling Insight into Battery Electrolyte Electrochemical Stability and Interfacial Structure
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Applying Classical, Ab Initio, and Machine-Learning Molecular Dynamics Simulations to the Liquid Electrolyte for Rechargeable Batteries.
TL;DR: In this paper , the authors provide an overview of applying molecular dynamics simulations in the study of liquid electrolytes for rechargeable batteries, including probing bulk and interfacial structures, deriving macroscopic properties such as ionic conductivity and dielectric constant, and revealing the electrode-electrolyte interfacial reaction mechanisms.
273
Water-in-Salt Electrolyte for Potassium-Ion Batteries
TL;DR: Concentrated potassium acetate as a water-in-salt electrolyte provides a wide potential window from −1.7 to 1.5 V vs Ag/AgClKCl sat as discussed by the authors.
271
Advances in Interfaces between Li Metal Anode and Electrolyte
TL;DR: In this paper, a review of recent advances in interfacial science and engineering is summarized to afford a fundamental understanding in Li deposition behavior and present design principles in constructing robust interface to stabilize Li metal anode in a working battery.
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The role of the hydrogen evolution reaction in the solid–electrolyte interphase formation mechanism for “Water-in-Salt” electrolytes
Nicolas Dubouis,Nicolas Dubouis,Pierre Lemaire,Pierre Lemaire,Pierre Lemaire,Boris Mirvaux,Boris Mirvaux,Elodie Salager,Elodie Salager,Michaël Deschamps,Michaël Deschamps,Alexis Grimaud,Alexis Grimaud,Alexis Grimaud +13 more
TL;DR: In this paper, the authors focused on the fate of water at the electrochemical interface under negative polarization and the potential reactivity of TFSI anions with products originating from the water reduction.
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