Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Enabling Magnesium Anodes by Tuning the Electrode/Electrolyte Interfacial Structure

Journal Article · · ACS Applied Materials and Interfaces
Here, a new deposition mechanism is presented in this study to achieve highly reversible plating and stripping of magnesium (Mg) anodes for Mg-ion batteries. It is known that the reduction of electrolyte anions such as bi s (trifluoromethanesulfonyl) imide (TFSI-) causes Mg surface passivation, resulting in poor electrochemical performance for Mg-ion batteries. We reveal that the addition of sodium cations (Na+) in Mg-ion electrolytes can fundamentally alter the interfacial chemistry and structure at the Mg anode surface. The molecular dynamics simulation suggests that Na+ cations contribute to a significant population in the interfacial double layer so that TFSI- anions are excluded from the immediate interface adjacent to the Mg anode. As a result, the TFSI- decomposition is largely suppressed so does the formation of passivation layers at the Mg surface. This mechanism is supported by our electrochemical, microscopic, and spectroscopic analyses. The resultant Mg deposition demonstrates smooth surface morphology and lowered overpotential compared to the pure Mg(TFSI)2 electrolyte.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1844340
Journal Information:
ACS Applied Materials and Interfaces, Journal Name: ACS Applied Materials and Interfaces Journal Issue: 44 Vol. 13; ISSN 1944-8244
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (47)

Novel Design Concepts of Efficient Mg-Ion Electrolytes toward High-Performance Magnesium-Selenium and Magnesium-Sulfur Batteries journal January 2017
Magnesium Borohydride: From Hydrogen Storage to Magnesium Battery journal August 2012
Paving the Way towards Highly Stable and Practical Electrolytes for Rechargeable Magnesium Batteries journal October 2014
Energies, structures, and electronic properties of molecules in solution with the C-PCM solvation model journal April 2003
Oxidation behaviour of MgF2 in Ag–MgF2 cermet journal October 1999
Recent advances in electrolytes and cathode materials for magnesium and hybrid-ion batteries journal March 2020
Anode-Electrolyte Interfaces in Secondary Magnesium Batteries journal January 2019
Efficient and Inexpensive Sodium–Magnesium Hybrid Battery journal October 2015
Revisiting OPLS Force Field Parameters for Ionic Liquid Simulations journal November 2017
Insights into the Structure and Transport of the Lithium, Sodium, Magnesium, and Zinc Bis(trifluoromethansulfonyl)imide Salts in Ionic Liquids journal August 2018
Specific Surface versus Electrochemically Active Area of the Carbon/Polypyrrole Capacitor: Correlation of Ion Dynamics Studied by an Electrochemical Quartz Crystal Microbalance with BET Surface journal April 2016
Hexafluorophosphate-Based Solutions for Mg Batteries and the Importance of Chlorides journal July 2017
Critical Issues of Fluorinated Alkoxyborate-Based Electrolytes in Magnesium Battery Applications journal August 2020
Existence of Solid Electrolyte Interphase in Mg Batteries: Mg/S Chemistry as an Example journal March 2018
Solvate Ionic Liquids at Electrified Interfaces journal August 2018
Understanding Electric Double-Layer Gating Based on Ionic Liquids: from Nanoscale to Macroscale journal November 2018
Comparative Study of Mg(CB 11 H 12 ) 2 and Mg(TFSI) 2 at the Magnesium/Electrolyte Interface journal March 2019
Polycation Binders: An Effective Approach toward Lithium Polysulfide Sequestration in Li–S Batteries journal October 2017
Toward Highly Reversible Magnesium–Sulfur Batteries with Efficient and Practical Mg[B(hfip) 4 ] 2 Electrolyte journal July 2018
Reversible Electrochemical Interface of Mg Metal and Conventional Electrolyte Enabled by Intermediate Adsorption journal November 2019
Synergetic Role of Li + during Mg Electrodeposition/Dissolution in Borohydride Diglyme Electrolyte Solution: Voltammetric Stripping Behaviors on a Pt Microelectrode Indicative of Mg–Li Alloying and Facilitated Dissolution journal January 2015
GROMACS 4:  Algorithms for Highly Efficient, Load-Balanced, and Scalable Molecular Simulation journal February 2008
A Second Generation Force Field for the Simulation of Proteins, Nucleic Acids, and Organic Molecules journal May 1995
Inner-orbital photoelectron spectroscopy of the alkali metal halides, perchlorates, phosphates, and pyrophosphates journal February 1973
Development and Testing of the OPLS All-Atom Force Field on Conformational Energetics and Properties of Organic Liquids journal January 1996
The Coupling between Stability and Ion Pair Formation in Magnesium Electrolytes from First-Principles Quantum Mechanics and Classical Molecular Dynamics journal February 2015
Complex Nature of Ionic Coordination in Magnesium Ionic Liquid-Based Electrolytes: Solvates with Mobile Mg 2+ Cations journal May 2014
Prototype systems for rechargeable magnesium batteries journal October 2000
In situ NMR and electrochemical quartz crystal microbalance techniques reveal the structure of the electrical double layer in supercapacitors journal June 2015
An artificial interphase enables reversible magnesium chemistry in carbonate electrolytes journal April 2018
High-power Mg batteries enabled by heterogeneous enolization redox chemistry and weakly coordinating electrolytes journal November 2020
A high-voltage concept with sodium-ion conducting β-alumina for magnesium-sodium dual-ion batteries journal July 2019
Coordination Chemistry in magnesium battery electrolytes: how ligands affect their performance journal November 2013
Cation reduction and comproportionation as novel strategies to produce high voltage, halide free, carborane based electrolytes for rechargeable Mg batteries journal January 2015
Below the 12-vertex: 10-vertex carborane anions as non-corrosive, halide free, electrolytes for rechargeable Mg batteries journal January 2017
Interfaces in rechargeable magnesium batteries journal January 2020
Canonical sampling through velocity rescaling journal January 2007
Polymorphic transitions in single crystals: A new molecular dynamics method journal December 1981
Ewald summation for systems with slab geometry journal August 1999
A force field of Li + , Na + , K + , Mg 2+ , Ca 2+ , Cl , and SO42− in aqueous solution based on the TIP4P/2005 water model and scaled charges for the ions journal October 2019
Constant pressure molecular dynamics for molecular systems journal December 1983
Transfer of Monovalent and Divalent Cations in Salt Solutions by Electrodialysis journal March 2007
Many-body effects in x-ray photoemission from magnesium journal January 1975
Nonaqueous Electrochemistry of Magnesium
  • Gregory, Thomas D.; Hoffman, Ronald J.; Winterton, Richard C.
  • Journal of The Electrochemical Society, Vol. 137, Issue 3, p. 775-780 https://doi.org/10.1149/1.2086553
journal January 1990
Evaluation of (CF 3 SO 2 ) 2 N (TFSI) Based Electrolyte Solutions for Mg Batteries journal January 2015
Computational Studies of Solubilities of LiO 2 and Li 2 O 2 in Aprotic Solvents journal January 2017
Dendrite Growth in Mg Metal Cells Containing Mg(TFSI) 2 /Glyme Electrolytes journal January 2018

Similar Records

Degradation Mechanisms of Magnesium Metal Anodes in Electrolytes Based on (CF3SO2)2N at High Current Densities
Journal Article · Tue Jun 20 20:00:00 EDT 2017 · Langmuir · OSTI ID:1418163

Exploration of the Detailed Conditions for Reductive Stability of Mg(TFSI)2 in Diglyme: Implications for Multivalent Electrolytes
Journal Article · Thu Feb 04 19:00:00 EST 2016 · Journal of Physical Chemistry. C · OSTI ID:1379107

Structural and chemical evolutions of a magnesium vanadium oxide cathode under electrochemical cycling in magnesium batteries
Journal Article · Tue Jun 25 20:00:00 EDT 2024 · Nano Energy · OSTI ID:2507163