Mechano-Thermo-Electrochemical Interactions in Energy Storage: Perspective toward Safety and Life (M09)

Recent years have witnessed a critical imperative to accelerate innovation toward improved performance (energy/power), safety and life of energy storage devices for vehicle electrification, renewable energy integration and grid storage. Lithium-ion batteries, in particular, are leading the race for electric drive vehicles. These are complex, dynamical systems, which include a multitude of coupled physicochemical processes encompassing electronic, ionic, diffusive transport in solid/electrolyte phases, electrochemical and phase change reactions and stress generation in multi-scale porous electrodes. The performance and lifetime of such electrochemical energy storage devices is dependent on complex reaction/transport processes spanning across multiple length and time scales. Computational models of mechanical, thermal and electrochemical processes play an important role in providing insight into coupled interactions that in many cases are impossible to directly observe.

For example, swelling and shrinking of battery electrodes occurs due to rate- and temperature- dependent intercalation processes. Mechanical strain leads to fatigue and fracture of cell structures at the grain, particle, and electrode length scales. Some promising energy dense electrode materials tend to change morphology as they operate, with uncertain consequence on lifetime. Computational models of in electrode microstructure models are pointing to new needs for characterization.

This symposium aims to capture, including, but not limited to:

  • Models coupling electrochemical, thermal, and mechanical physics
  • Models bridging physical processes across length scales
  • Methods for model characterization across length scales
  • Mesoscale physics of microstructure – transport – chemistry interactions
  • Degradation processes controlling safety and lifetime
  • Origin and evolution of safety events such as thermal runaway
  • Evolution of morphology with electrochemical cycling

Organizers:

Partha P. Mukherjee, Texas A&M University
Kandler Smith, National Renewable Energy Laboratory

Abstracts in this Minisymposium

Day and time information for the blocks in this Minisymposium