Lithium Intercalation in Core-Shell Materials-Theoretical Analysis

Journal Article · Tue Mar 04 00:00:00 EST 2014 · Journal of the Electrochemical Society

DOI:https://doi.org/10.1149/2.004405jes· OSTI ID:1211482

Suthar, B; Subramanian, VR

Core-shell composite structures are potential candidates for Li-ion battery electrodes as they can take advantage of materials with higher energy density and materials with higher cyclability. This paper derives an analytical solution for isotropic 1-dimensional diffusion with galvanostatic boundary condition in composite slab, cylinder and sphere using separation of variables method. A general interfacial condition has been used to represent the dynamics at the interface of the composite material rendering the solution useful for wide variety of battery materials. Using the derived analytical solution for diffusion, intercalation induced stresses were estimated for spherical core-shell materials. (C) 2014 The Electrochemical Society. All rights reserved.

• Sponsoring Organization: USDOE Advanced Research Projects Agency - Energy (ARPA-E)
• DOE Contract Number: DE-AR0000275
• OSTI ID: 1211482
• Journal Information: Journal of the Electrochemical Society, Vol. 161, Issue 5; ISSN 0013-4651
• Country of Publication: United States
• Language: English