Three-dimensional reconstruction and computational analysis of a structural battery composite electrolyte

Abstract Structural batteries are multifunctional composite materials that can carry mechanical load and store electrical energy. Their multifunctionality requires an ionically conductive stiff electrolyte matrix material. For this purpose, a bi-continuous polymer is used where porous solid phase holds the structural integrity of system, liquid phase, which occupies pores, conducts lithium ions. To assess structure, three-dimensional topology information needed. Here we study structure battery material using combined focused ion beam scanning electron microscopy transfer into finite element models. Numerical analyses provide predictions elastic modulus ionic conductivity Characterization also provides on diameter volume distributions as well geodesic tortuosity.