Hydrogen uptake by barium manganite at atmospheric pressure

Mandal, Tapas Kumar ; Sebastian, Litty ; Gopalakrishnan, J. ; Abrams, Lloyd ; Goodenough, J. B. (2004) Hydrogen uptake by barium manganite at atmospheric pressure Materials Research Bulletin, 39 (14-15). pp. 2257-2264. ISSN 0025-5408

PDF - Publisher Version

Official URL: http://linkinghub.elsevier.com/retrieve/pii/S00255...

Related URL: http://dx.doi.org/10.1016/j.materresbull.2004.08.009


Investigation of the interaction of hydrogen with alkaline earth manganites (IV) AMnO3 (A = Ca, Sr, Ba), dispersed with 1 at.% Pt, has revealed an unprecedented uptake of hydrogen by BaMnO3/Pt to the extent of ~ 1.25 mass% at moderate temperatures (190-260 °C) and ambient pressure. Gravimetric sorption isotherms and mass spectrometric analysis of the desorption products indicate that approximately three hydrogen atoms per mol of BaMnO3/Pt is inserted reversibly. The nature of hydrogen in the insertion product, BaMnO3H3, is discussed. The work suggests the possibility of developing new hydrogen storage materials based on electropositive metal-transition metal-oxide systems.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:A. Oxides; A. Hydrides; C. Thermogravimetric Analysis (TGA)
ID Code:12540
Deposited On:13 Nov 2010 13:23
Last Modified:16 May 2016 21:52

Repository Staff Only: item control page