Effects of Process Variables on the Growth of Dendrite in the Electrochemical Alane(AlH3) Production Process

전기화학적 알레인(AlH3) 제조 공정에서 덴드라이트의 성장에 미치는 공정 변수 영향


  • Received : 2015.11.13
  • Accepted : 2015.12.30
  • Published : 2015.12.30


Electrochemical alane ($AlH_3$) production process can be provided as a synthesis route which close a reversible cycle. In this study, growth inhibition of dendrite as key issues in this process was investigated. Main cause of dendrite growth was because Al fine powder separated in consumption process of Al electrode was moved to Pd electrode. In an effort to avoid this, use of glass block with uniform holes was the most effective to inhibit the amount of dendrite to that of $AlH_3$. Furthermore, effects of Al electrode (anode) type and electrolyte concentration were investigated and the optimal condition for inhibiting dendrite formation was proposed.


Hydrogen storage;Alane;Electrochemical;Dendrite


  1. J. Graetz, J. J. Reilly, V. A. Yartys, J. P. Maehlen, B. M. Bulychev, and V. E. Antonov et al., "Aluminum hydride as a hydrogen and energy storage material: Past, present and future", J. Alloy. Comp., Vol. 509S, 2011, p. S517.
  2. S. Beattie, T. Humphries, L. Weaver, and S. McGrady, "Watching the dehydrogenation of alane ($AlH_3$) in a TEM", in 2008 APS March Meeting, American Physical Society, New Orleans, Louisiana, 2008.
  3. J. Graetz, and J. J. Reilly, "Decomposition Kinetics of the $AlH_3$ Polymorphs", J. Phys. Chem. B, Vol. 109, 2005, p. 22181.
  4. A. E. Finholt, A. C. Bond, and H. I. Schlesinger, "Lithium Aluminum Hydride, Aluminum Hydride and Lithium Gallium Hydride, and Some of their Applications in Organic and Inorganic Chemistry1", J. Am. Chem. Soc., Vol. 69, 1947, p. 1199.
  5. F. M. Brower, N. E. Matzek, P. F. Reigler, H. W. Rinn, C. B. Roberts, D. L. Schmidt, J. A. Snover, and K. Terada, "Preparation and properties of aluminum hydride", J. Am. Chem. Soc., Vol. 98, 1976, p. 2450.
  6. T. Kato, Y. Nakamori, S. Orimo, C. Brown, and C. M. Jensen, "Thermal properties of $AlH_3$-etherate and its desolvation reaction into $AlH_3$", J. Alloys Compd., Vol. 446, 2007, p. 276.
  7. R. Zidan, B. L. Garcia-Diaz, C. S. Fewox, A. C. Stowe, J. R. Gray, and A. G. Harter, "Aluminium hydride: a reversible material for hydrogen storage", Chem. Commun., 2009, p. 3717.
  8. R. Zidan, "Electrochemical reversible formation of alane", 2013 U.S. DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation meeting, 2013.
  9. R. Zidan, Teprovich, D. Knight, and S. Greenway, "Electrochemical reversible formation of alane", FY 2013 Annual Progress Report, DOE Hydrogen and Fuel Cells Program.
  10. C. Ni, and L. Yang, "Reaction pathways and roles of N-alkylmorpholine in amine.alane transamination: A mechanistic study", Int. J Hydrogen Energ., Vol. 39, 2014, p. 5003.
  11. M. J. Martinez-Rodriguez, B. L. Garcia-Diaz, J. A. Teprovich Jr., D. A. Knight, and R. Zidan, "Advances in the electrochemical regeneration of aluminum hydride", Appl. Phys. A, Vol. 106, 2012, p. 545.