Rechargeable Metal-Air Batteries

Objective: Improve the performance of metal-air batteries.


Summary: Because of their extremely high theoretical energy densities, metal-air batteries have long been considered as a replacement for combustion engines in vehicles. However, many obstacles have been encountered in understanding the discharge process, and improving the rechargeability of full cells. Our laboratory works specifically with lithium-air and magnesium-air systems. Our approach combines continuum-scale modeling with targeted experiments to achieve a comprehensive understanding of the factors that most strongly impact performance in metal-air systems. We seek to characterize the primary discharge phases as a function of charge/discharge extent, charge/discharge rate, and electrolyte/solvent composition. Additionally, we hope to illuminate the dependence of oxide formation rates at the cathode on different cathode materials.

Parallel operating metal-air charge/discharge cells.




Lithium-Air Battery Modeling

Objective: Develop a continuum-scale three-phase model to study the transport and kinetic processes in a Li-Air battery.


Summary: Numereous research efforts have been dedicated to studying lithium-air batteries. One of the major problems of a lithium-air battery is that the discharge products are not soluble in the non-aqueous electrolyte. These discharge products deposit on the surface of the porous cathode and passivate the electrode. As a concenquence of the deposition, there are three phases in a lithium-air cathode: the liquid electrolyte phase, the solid carbon backbone phase, and the discharge product deposition phase (as shown by the figure below). In our present work, we will develop a continuum-scale three-phase model to simulate the transport and kinetic processes in a lithium-air battery.

There are three phases in the porous cathode of a lithium-air battery: the liquid electrolyte phase, the solid carbon backbone phase, and the discharge product deposition phase.

Upcoming Talks

Recent News

April, 2017

Saber gave a talk at the ACS Conference in San Francisco, California.
[Abstract]

April, 2017

James gave a talk at the ACS Conference in San Francisco, California.
[Abstract]

May, 2017

Saber gave a talk at the ECS Conference in New Orleans, Louisiana.
[Abstract]

May, 2017

James gave a talk at the ECS Conference in New Orleans, Louisiana.
[Abstract]

October, 2016

Priyam gave a talk, "Models to Couple Mechanics and Electrochemical Transport in Solid Electrolytes," at the 230th ECS Meeting in Honolulu, Hawaii.

October, 2016

Howie gave a talk, "Electrochemical-Thermal Characterization and Modeling of Large Format Prismatic Lithium Ion Batteries," at the 230th ECS Meeting in Honolulu, Hawaii.

August, 2016

Priyam gave a talk, "Coupling of Material, Charge, and Momentum Transport in Liquid and Solid Electrolytes," at the 67th International Society of Electrochemistry in The Hague, Netherlands.

June, 2016

James gave a talk, "Towards Symmetric All-Organic Redox Flow Batteries," at the IFBF 2016 Conference in Karlsruhe, Germany.

June, 2016

Prof. Monroe gave a talk, "Coupling of Mechanical and Transport Phenomena in Ionomers," at the 229th ECS Meeting in San Diego, California.

More

Recent Publications

  • G. Vardar, J.G. Smith, T. Thompson, K. Inagaki, J. Naruse, H. Hiramatsu, A.E.S. Sleightholme, J. Sakamoto, D.J. Siegel, C.W. Monroe, "Mg/O2 Battery Based on the Magnesium–Aluminum Chloride Complex (MACC) Electrolyte," Chem. Mater 28 (2016), 7629-7637.

  • J. Liu, S.K. Rahimian, C.W. Monroe, "Capacity-limiting mechanisms in Li/O2 batteries," Phys. Chem. Chem. Phys. 18 (2016), 22840-22851.

  • A.F. Chadwick, G. Vardar, S. DeWitt, A.E.S. Sleightholme, C.W. Monroe, D.J. Siegel, K. Thornton, "Computational Model of Magnesium Deposition and Dissolution for Property Determination via Cyclic Voltammetry," J. Electrochem. Soc. 163 (2016), A1813-A1821.

  • A.M. Bizeray, D.A. Howey, C.W. Monroe, "Resolving a Discrepancy in Diffusion Potentials, with a Case Study for Li-Ion Batteries," J. Electrochem. Soc. 163 (2016), E223-E229.

  • J.D. Saraidaridis, B.M. Bartlett, C.W. Monroe, "Spectroelectrochemistry of Vanadium Acetylacetonate and Chromium Acetylacetonate for Symmetric Nonaqueous Flow Batteries," J. Electrochem. Soc. 163 (2016), A1239-A1246.

  • More