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Title: Molecular Level Structure and Dynamics of Electrolytes Using 17O Nuclear Magnetic Resonance Spectroscopy

Journal Article · · eMagRes

Electrolytes help harness the energy from electrochemical processes by serving as solvents and transport media for redox-active ions. Molecular-level interactions between ionic solutes and solvent molecules – commonly referred to as solvation phenomena – give rise to many functional properties of electrolytes such as ionic conductivity, viscosity, and stability. It is critical to understand the evolution of solvation phenomena as a function of competing counterions and solvent mixtures to predict and design the optimal electrolyte for a target application. Probing oxygen environments is of great interest as oxygens are located at strategic molecular sites in battery solvents and are directly involved in inter- and intramolecular solvation interactions. NMR signals from 17O nuclei in battery electrolytes offer nondestructive bulk measurements of isotropic shielding, electric field gradient tensors, and transverse and longitudinal relaxation rates, which are excellent means for probing structure, bonding, and dynamics of both solute and solvent molecules. This article describes the use of 17O NMR spectroscopy in probing the solvation structures of various electrolyte systems ranging from transition metal ions in aqueous solution to lithium cations in organic solvent mixtures.

Research Organization:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-76RL01830
OSTI ID:
1390436
Report Number(s):
PNNL-SA-128311; 49376; KC0208010
Journal Information:
eMagRes, Vol. 6, Issue 1
Country of Publication:
United States
Language:
English

References (63)

Nuclear Magnetic Resonance Studies of Ions in Pure and Mixed Solvents journal August 1967
Effects of Electrolyte Salts on the Performance of Li–O 2 Batteries journal February 2013
Molecular structure and stability of dissolved lithium polysulfide species journal January 2014
Variable-Temperature and Variable-Pressure17O-NMR Study of Water Exchange of Hexaaquaaluminium(III) journal May 1985
Challenges for Rechargeable Li Batteries journal February 2010
Solvate Structures and Computational/Spectroscopic Characterization of LiPF 6 Electrolytes journal April 2015
Proton NMR evidence for π-bonding in oxovanadium(IV) complexes journal August 1968
Issues and challenges facing rechargeable lithium batteries journal November 2001
DMSO exchange on [Gd(DMSO) 8 ] 3+ —a variable pressure 17 O NMR study journal March 2004
Li + Cation Environment, Transport, and Mechanical Properties of the LiTFSI Doped N -Methyl- N -alkylpyrrolidinium + TFSI - Ionic Liquids journal August 2006
Oxygen-17 NMR spectroscopy: Basic principles and applications (part II) journal July 2010
Protonation Equilibria of Mononuclear Vanadate:  Thermodynamic Evidence for the Expansion of the Coordination Number in VO 2 + journal January 1996
NMR relaxation studies in solution of transition metal complexes. V. Proton exchange reactions in aqueous solutions of VO2+-oxalic acid, -malonic acid systems journal January 1982
Contact Shift Studies of Some Paramagnetic Hexaaquo Metal Ion Complexes journal January 1966
LiTFSI Structure and Transport in Ethylene Carbonate from Molecular Dynamics Simulations journal March 2006
Role of Mixed Solvation and Ion Pairing in the Solution Structure of Lithium Ion Battery Electrolytes journal June 2015
Design of electrolyte solutions for Li and Li-ion batteries: a review journal November 2004
Non-Aqueous Li-Based Redox Flow Batteries journal January 2012
Ligand nuclear hyperfine coupling constants in the vanadyl(IV)-aquo complex. Evidence for metal-ligand .pi. bonding journal September 1969
The polarized absorption spectra of three crystalline polymorphs of VOSO4.5H2O journal June 1968
Towards understanding the poor thermal stability of V5+ electrolyte solution in Vanadium Redox Flow Batteries journal April 2011
Electronic Structure of the Aqueous Vanadyl Ion Probed by 9 and 94 GHz EPR and Pulsed ENDOR Spectroscopies and Density Functional Theory Calculations journal December 1999
Molecular Dynamics Simulation of LiTFSI−Acetamide Electrolytes: Structural Properties journal May 2008
"Water-in-salt" electrolyte enables high-voltage aqueous lithium-ion chemistries journal November 2015
Structure and Stability of VO 2 + in Aqueous Solution:  A Car−Parrinello and Static ab Initio Study journal June 2007
Vanadium redox cell electrolyte optimization studies journal May 1990
High-pressure 17O NMR studies on some aqueous polyoxoions in water journal November 2008
Electrolytes and Interphases in Li-Ion Batteries and Beyond journal October 2014
Natural abundance 17O nuclear magnetic resonance and computational modeling studies of lithium based liquid electrolytes journal July 2015
A Stable Vanadium Redox-Flow Battery with High Energy Density for Large-Scale Energy Storage journal March 2011
Structure and stability of hexa-aqua V(iii) cations in vanadium redox flow battery electrolytes journal January 2012
Medium Effects on51V NMR Chemical Shifts: A Density Functional Study journal October 2001
Nuclear magnetic resonance studies of the coordination of vanadyl complexes in solution and the rate of elimination of coordinated water molecules journal July 1968
Vanadium redox battery: Positive half-cell electrolyte studies journal April 2009
Glyme−Lithium Bis(trifluoromethanesulfonyl)imide and Glyme−Lithium Bis(perfluoroethanesulfonyl)imide Phase Behavior and Solvate Structures journal April 2005
The COSMO and COSMO-RS solvation models: The COSMO and COSMO-RS solvation models journal April 2011
Prototropic charge migration in water. Part 1.—Rate constants in light and heavy water and in salt solution from oxygen-17 spin relaxation journal January 1983
Oxygen‐17 NMR Linewidths as Influenced by Proton Exchange in Water journal July 1967
Effect of the Anion Activity on the Stability of Li Metal Anodes in Lithium-Sulfur Batteries journal March 2016
High pressure NMR studies on ligand exchange reactions in the equatorial sites of [VO(L)5]2+ (L=acetonitrile, N,N-dimethylformamide, and N,N-dimethylacetamide) journal November 1999
Isotropic Nuclear Resonance Shifts journal December 1958
Speciation and NMR relaxation studies of VO(IV) complexes with several O-donor containing ligands: oxalate, malonate, maltolate and kojate journal August 2000
Quaternary Ammonium Room-Temperature Ionic Liquid Including an Oxygen Atom in Side Chain/Lithium Salt Binary Electrolytes:  Ionic Conductivity and 1 H, 7 Li, and 19 F NMR Studies on Diffusion Coefficients and Local Motions journal January 2008
The Chemistry of Oxovanadium(IV) journal April 1965
Formation equilibria of vanadium(V) species in different ionic media: Salt effect and protonation constant journal February 2008
QM/MM–MD simulation of hydrated vanadium(II) ion journal September 2002
Oxygen-17 NMR spectroscopy: Basic principles and applications (Part I) journal March 2010
Natural abundance 17O, 6Li NMR and molecular modeling studies of the solvation structures of lithium bis(fluorosulfonyl)imide/1,2-dimethoxyethane liquid electrolytes journal March 2016
Density functional theory calculations for ethylene carbonate-based binary electrolyte mixtures in lithium ion batteries journal March 2014
Challenges in the development of advanced Li-ion batteries: a review journal January 2011
Electrostriction in Electrolyte Solutions journal February 2011
NMR‐Relaxation Mechanisms of O 17 in Aqueous Solutions of Paramagnetic Cations and the Lifetime of Water Molecules in the First Coordination Sphere journal July 1962
Li + solvation in glyme–Li salt solvate ionic liquids journal January 2015
Oxovanadium(IV) complexes journal August 1966
The Electronic Structure of the Vanadyl Ion journal February 1962
Inorganic and Bioinorganic Solvent Exchange Mechanisms journal June 2005
Spectroscopic study of vanadium(V) precipitation in the vanadium redox cell electrolyte journal August 2001
Nuclear magnetic resonance studies on vanadium(IV) electrolyte solutions for vanadium redox flow battery journal November 2010
Magnetic resonance studies of ion solvation. The hydration of the vanadyl(IV) ion journal March 1967
Nuclear and Electronic Relaxation of Eu 2+ ( a q) :  An Extremely Labile Aqua Ion 1 journal November 1999
High pressure oxygen-17 NMR study on the kinetics of water exchange reaction in pentaquaoxovanadium(IV) journal June 1988
Understanding Li + –Solvent Interaction in Nonaqueous Carbonate Electrolytes with 17 O NMR journal May 2013
Water exchange on metal ions: experiments and simulations journal June 1999

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