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Journal of Materials Science

, Volume 54, Issue 5, pp 4089–4104 | Cite as

Spray pyrolysis of conductor- and binder-free porous FeS2 films for high-performance lithium ion batteries

  • Shadi Al Khateeb
  • Taylor D. Sparks
Energy materials

Abstract

To improve battery performance a high cathode surface area is needed to maximize the electrode–electrolyte contact area. For this purpose, and for the first time, conductor- and binder-free porous FeS2 films through the entire thickness were deposited by spray pyrolysis. 1 M of Fe(NO3)3.9H2O, FeCl3, and NH2CSNH2 were utilized as the precursors. Film deposition was performed at 400 °C in open atmosphere. The deposited films were then sulfurized at 500 °C for 4 h with H2S gas or in sealed quartz ampoules with sulfur flakes. The best crystallized films were obtained using FeCl3 and NH2CSNH2 precursors followed by sulfurization in the sealed ampoules. The films were characterized with X-ray diffraction, scanning electron microscopy, and electrochemical impedance spectroscopy. The films were cycled at C/10 and C/20 and despite having no binder or conductive additives gave comparable capacities compared to the literature finding for FeS2 powders mixed with conductor and binder additions.

Notes

Acknowledgements

This work has been carried out during sabbatical leave granted to Shadi Al Khateeb from Al-Balqa Applied University (BAU) during the academic year 2017/2018. The authors would like to thank the Arab Fund Fellowship program—Kuwait, and USTAR UTAG program for their financial support and equipment during this work.

Compliance with ethical standards

Conflict of interest

The authors report that they are listed as co-inventors on two patents associated with this technology that have been filed through the University of Florida and the University of Utah.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Materials Engineering, Faculty of EngineeringAl-Balqa Applied UniversityAl-SaltJordan
  2. 2.Department of Material Science EngineeringUniversity of UtahSalt Lake CityUSA

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