How carbon affects hydrogen desorption in NaAlH4 and Ti-doped NaAlH4

Cento C., Gislon P., Bilgili M., Masci A., Zheng Q., Prosini P. P.

JOURNAL OF ALLOYS AND COMPOUNDS, cilt.437, ss.360-366, 2007 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 437
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1016/j.jallcom.2006.09.025
  • Dergi Adı: JOURNAL OF ALLOYS AND COMPOUNDS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.360-366
  • Anahtar Kelimeler: metal hydrides, hydrogen storage materials, SODIUM ALANATES, STORAGE, BEHAVIOR, DOPANT
  • Gazi Üniversitesi Adresli: Evet

Özet

The hydrogen storage properties of doped and undoped NaAlH4 samples are studied after mixing them with different percentages of high surface carbon. Manually mixed samples are compared with ball milled ones; it was found that manual mixing was a simple and effective way to dope NaAlH4. A morphological and micro-structural analysis has been carried out in order to understand the effect of carbon. Carbon added samples show a marked enhancement of hydrogen desorption rate. The desorption temperature and the total hydrogen content remain almost unchanged for undoped sample. The desorption temperatures of Ti-doped samples increase with carbon content. (C) 2006 Elsevier B.V. All rights reserved.