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Monitoring of CoS2 reactions using high-temperature XRD coupled with gas chromatography (GC)

Published online by Cambridge University Press:  18 April 2016

Mark A. Rodriguez*
Affiliation:
Sandia National Laboratories, Albuquerque, New Mexico 87185-1411
Eric N. Coker
Affiliation:
Sandia National Laboratories, Albuquerque, New Mexico 87185-1411
James J. M. Griego
Affiliation:
Sandia National Laboratories, Albuquerque, New Mexico 87185-1411
Curtis D. Mowry
Affiliation:
Sandia National Laboratories, Albuquerque, New Mexico 87185-1411
Adam S. Pimentel
Affiliation:
Sandia National Laboratories, Albuquerque, New Mexico 87185-1411
Travis M. Anderson
Affiliation:
Sandia National Laboratories, Albuquerque, New Mexico 87185-1411
*
a)Author to whom correspondence should be addressed. Electronic mail: marodri@sandia.gov

Abstract

High-temperature X-ray diffraction with concurrent gas chromatography (GC) was used to study cobalt disulfide cathode pellets disassembled from thermal batteries. When CoS2 cathode materials were analyzed in an air environment, oxidation of the K(Br, Cl) salt phase in the cathode led to the formation of K2SO4 that subsequently reacted with the pyrite-type CoS2 phase leading to cathode decomposition between ~260 and 450 °C. Independent thermal analysis experiments, i.e. simultaneous thermogravimetric analysis/differential scanning calorimetry/mass spectrometry (MS), augmented the diffraction results and support the overall picture of CoS2 decomposition. Both gas analysis measurements (i.e. GC and MS) from the independent experiments confirmed the formation of SO2 off-gas species during breakdown of the CoS2. In contrast, characterization of the same cathode material under inert conditions showed the presence of CoS2 throughout the entire temperature range of analysis.

Type
Technical Articles
Copyright
Copyright © International Centre for Diffraction Data 2016 

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References

Bao, S-J., Li, C. M., Guo, C-X., and Qiao, Y. (2008). “Biomolecule-assisted synthesis of cobalt sulfide nanowires for application in supercapacitors,” J. Power Sources 180, 676681.Google Scholar
Butler, P., Wagner, C., Guidotti, R., and Francis, I. (2004). “Long-life, multi-tap thermal battery development,” J. Power Sources 136, 240245.Google Scholar
Choi, D., Xiao, J., Joon Choi, Y., Hardy, J. S., Vijayakumar, M., Bhuvaneswari, M. S., Liu, J., Xu, W., Wang, W., Yang, Z., Graff, G. L., and Zhang, J-G. (2011). “Thermal stability and phase transformation of electrochemically charged/discharged LiMnPO4 cathode for Li-ion batteries,” Energy Environ. Sci. 4, 45604566.Google Scholar
Coker, E. N., Ambrosini, A., Rodriguez, M. A., and Miller, J. E. (2011). “Ferrite-YSZ composites for solar thermochemical production of synthetic fuels: in operando characterization of CO2 reduction,” J. Mater. Chem. 21, 1076710776.Google Scholar
Fawcett, T. (1987). “Greater than the sum of its parts – a new instrument,” Chemtech 17, 564569.Google Scholar
Goriparti, S., Miele, E., De Angelis, F., Di Fabrizio, E., Proietti Zaccaria, R., and Capiglia, C. (2014). “Review on recent progress of nanostructured anode materials for Li-ion batteries,” J. Power Sources 257, 421443.Google Scholar
ICDD (2015). PDF-4+ 2015 (Database), edited by Dr. Soorya Kabekkodu, International Centre for Diffraction Data, Newtown Square, PA, USA.Google Scholar
Mrowec, S., Danielewski, M., and Wojtowicz, A. (1998). “Sulphidation of cobalt at high temperatures,” J. Mater. Sci. 22, 26172628.Google Scholar
Trionfetti, C., Babich, I. V., Seshan, K., and Lefferts, L. (2006). “Formation of high surface area Li/MgO-Efficient catalyst for the oxidative dehydrogenation/cracking of propane,” Appl. Catal. A: Gen. 310, 105113.Google Scholar