Combustion Product Characterization of the Iron-Heated Powders in Thermal Batteries

Authors

Jin CHONG, Tianjin Institute of Power Sources,Tianjin 300381,China;Institute of New Energy Material Chemistry,Nankai University,Tianjin 300071,China;
Xue-ping GAO, Institute of New Energy Material Chemistry,Nankai University,Tianjin 300071,China;
Ji-qiang WANG, Tianjin Institute of Power Sources,Tianjin 300381,China;

Corresponding Author

Jin CHONG(ChongJ@ATLBattery.com)

Abstract

The combustion products of thermal battery used iron-heated powders have been studied.It is identified by X-ray diffraction(XRD) analysis that the main compositions of the combustion products are Fe、FeO and KCl.The transmission electron microscopy(TEM) shows a typical core-shell structure with un-reacted Fe particle core coated by FeO shell with a shell thickness of around 200 nm.The combusted iron-heated powders exhibit no metal property,which is contrast to previous assumption.Further measurement indicates that at the ambient temperature the combustion products show semiconductor property of the p-type with conductivity in the order of 103 S·cm-1,which is five order lower than that of the iron at 800 K.Since the FeO layer formed during the iron-heated powders combustion is thin,its contribution to the internal resistance of the thermal batteries is negligible.

Keywords

thermal battery, iron heat powder, semiconductor, electrical conductivity

DOI Link

https://doi.org/10.61558/2993-074X.1924

Publication Date

2008-11-28

Online Available Date

2008-11-28

Revised Date

2008-11-28

Received Date

2008-11-28

Recommended Citation

Jin CHONG, Xue-ping GAO, Ji-qiang WANG. Combustion Product Characterization of the Iron-Heated Powders in Thermal Batteries[J]. Journal of Electrochemistry, 2008 , 14(4): 373-377.
DOI: 10.61558/2993-074X.1924
Available at: https://jelectrochem.xmu.edu.cn/journal/vol14/iss4/5

References

[1]CHONG Jin,GUAN Yi,AN Jian-min,et al.Mensura-tion of the heat quantity of iron heat powder used inthermal battery[J].Chinese Journal of Power Sources,2006,(6):507-510.
[2]David Linden,Thomas B Reddy.Handbook of Batteries[M].third edition,New York:McGraw-Hill,2002,21.5-21.5.
[3]Austin Attewell,John H Grimes.A novel type of ironpowder for use in thermal battery pyrotechnics;proceed-ings of the 31th power sources conference symposia[C].New Jersey:Cherry Hill,1984.23-27.
[4]Tianjin Institute of Power Sources.Physical powersources[M].first edition,Beijing:Electronic IndustryPress,1985.92-92.
[5]Beijing Normal University,Central China Normal Uni-versity,Nanjing Normal University.Inorganic chemistry[M].third edition,Beijing:High Education Press,1992.321-322.
[6]Beijing Normal University,Central China Normal Uni-versity,Nanjing Normal University.Inorganic chemistry[M].third edition,Beijing:High Education Press.1992.41-41.
[7]David R Lide.Handbook of chemistry and physics[M].the 85st edition,USA:The CRC Press,2005.2122-2123.
[8]Zhang Lili(张丽丽),ZHANG Jianzhong(张建中),REN Baoguo(任保国).Performance analysis of n-typePbTe prepared at super high pressure[J].ChineseJournal of Power Sources,2005,(11):758-761.
[9]Zhao Jinfeng(赵晋锋),CHUDewei(褚德威),ZHANG Weihong(张卫红).Internal resistance of ther-mal batteries with lithium alloy negative electrodes[J].Chinese Journal of Power Sources,2006,(2):137-140.