Open AccessComposition and Manufacturing Effects on Electrical Conductivity of Li/FeS2Thermal Battery Cathodes
Author(s) -
Emilee Lolita Reinholz,
Scott Alan Roberts,
Christopher A. Apblett,
Jeremy B. Lechman,
Peter Randall Schunk
Publication year - 2016
Publication title -
journal of the electrochemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.258
H-Index - 271
eISSN - 1945-7111
pISSN - 0013-4651
DOI - 10.1149/2.1191608jes
Subject(s) - battery (electricity) , cathode , materials science , microstructure , electrical resistivity and conductivity , dielectric spectroscopy , thermal conductivity , conductivity , electrical impedance , composite material , electrode , electrical engineering , electrochemistry , thermodynamics , chemistry , power (physics) , physics , engineering
The electrical conductivity is key to the performance of thermal battery cathodes. In this work we present the effects of manufacturing and processing conditions on the electrical conductivity of Li/FeS2 thermal battery cathodes. Finite element simulations were used to compute the conductivity of three-dimensional microcomputed tomography cathode microstructures and compare results to experimental impedance spectroscopy measurements. A regression analysis reveals a predictive relationship between composition, processing conditions, and electrical conductivity; a trend which is largely erased after thermally-induced deformation. Moreover, the trend applies to both experimental and simulation results, although is not as apparent in simulations. This research is a step toward a more fundamental understanding of the effects of processing and composition on thermal battery component microstructure, properties, and performance.
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