Role of electrodes in ambient electrolytic decomposition of hydroxylammonium nitrate (HAN) solutions

Kai Seng Koh, Jit Kai Chin, Tengku F. Wahida Ku Chik

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)


Decomposition of hydroxylammonium nitrate (HAN) solution with electrolytic decomposition method has attracted much attention in recent years due to its efficiencies and practicability. However, the phenomenon has not been well-studied till now. By utilizing mathematical model currently available, the effect of water content and power used for decomposition was studied. Experiment data shows that sacrificial material such as copper or aluminum outperforms inert electrodes in the decomposition of HAN solution. In the case of using copper wire to electrolyse HAN solutions, approximately 10 seconds is required to reach 100 °C regardless of concentration of HAN. In term of power consumption, 100 W–300 W was found to be the range in which decomposition could be triggered effectively using copper wire as electrodes.

Original languageEnglish
Pages (from-to)194-200
Number of pages7
JournalPropulsion and Power Research
Issue number3
Publication statusPublished - Sept 2013


  • Copper wire
  • Electrode
  • Electrolytic decomposition
  • Hydroxylammonium nitrate (HAN)
  • Inert carbon rod

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Fuel Technology
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes


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