Composition and Manufacturing Effects on Electrical Conductivity of Li/FeS 2 Thermal Battery Cathodes

Reinholz, Emilee L.; Roberts, Scott A.; Apblett, Christopher A.; Lechman, Jeremy B.; Schunk, P. Randall

doi:10.1149/2.1191608jes

Title: Composition and Manufacturing Effects on Electrical Conductivity of Li/FeS ₂ Thermal Battery Cathodes

Journal Article · Sat Jun 11 00:00:00 EDT 2016 · Journal of the Electrochemical Society

DOI:https://doi.org/10.1149/2.1191608jes· OSTI ID:1257804

Reinholz, Emilee L. ^[1];

^[2]; Apblett, Christopher A. ^[2]; Lechman, Jeremy B. ^[2]; Schunk, P. Randall ^[1]

Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Univ. of New Mexico, Albuquerque, NM (United States)
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

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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Research Organization:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC04-94AL85000

OSTI ID:: 1257804

Report Number(s):: SAND2016-2364J; 622005

Journal Information:: Journal of the Electrochemical Society, Vol. 163, Issue 8; ISSN 0013-4651

Publisher:: The Electrochemical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 9 works

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Title: Composition and Manufacturing Effects on Electrical Conductivity of Li/FeS ₂ Thermal Battery Cathodes