Binder-Free Cathode for Thermal Batteries Fabricated Using FeS2 Treated Metal Foam

In this study, we fabricated a cathode with lower amounts of additive materials and higher amounts of active materials than those of a conventional cathode. A thermal battery was fabricated using FeS 2 treated foam as the cathode frame, and its feasibility was verified. X-ray diffraction, transmissi...

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Published inFrontiers in chemistry Vol. 7; p. 904
Main Authors Kim, In Yea, Woo, Sung Pil, Ko, Jaehwan, Kang, Seung-Ho, Yoon, Young Soo, Cheong, Hae-Won, Lim, Jae-Hong
Format Journal Article
LanguageEnglish
Published Frontiers Media S.A 10.01.2020
Subjects
cathode frame
Chemistry
FeS2 foam
metal foam
thermal battery
thermal sulfidation
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Summary:In this study, we fabricated a cathode with lower amounts of additive materials and higher amounts of active materials than those of a conventional cathode. A thermal battery was fabricated using FeS 2 treated foam as the cathode frame, and its feasibility was verified. X-ray diffraction, transmission electron microscopy, and scanning electron microscopy were used to analyze the effects of thermal sulfidation temperature (400 and 500°C) on the structure and surface morphology of the FeS 2 foam. The optimal temperature for the fabrication of the FeS x treated foam was determined to be 500°C. The FeS 2 treated foam reduced the interfacial resistance and improved the mechanical strength of the cathode. The discharge capacity of the thermal battery using the FeS 2 treated foam was about 1.3 times higher than that of a thermal battery using pure Fe metal foam.
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Edited by: Nosang Vincent Myung, University of California, Riverside, United States
Reviewed by: Pankaj Madhukar Koinkar, Tokushima University, Japan; Xianhong Rui, Guangdong University of Technology, China
This article was submitted to Electrochemistry, a section of the journal Frontiers in Chemistry
ISSN:2296-2646
2296-2646
DOI:10.3389/fchem.2019.00904