Work

Sodium Alanate Nanoparticles − Linking Size to Hydrogen Storage Properties

Year: 2008

Type: article

Abstract: Important limitations in the application of light metal hydrides for hydrogen storage are slow kinetics and poor reversibility. To alleviate these problems doping and ball-milling are commonly applied, for NaAlH 4 leading to particle sizes down to 150 nm. By wet-chemical synthesis we have prepared carbon nanofiber-supported NaAlH 4 with discrete particle size ranges of 1-10 microm, 19-30 nm, and 2-10 nm. The hydrogen desorption temperatures and activation energies decreased from 186 degrees C and 116 kJ.mol (-1) for the largest particles to 70 degrees C and 58 kJ.mol (-1) for the smallest particles. In addition, decreasing particle sizes lowered the pressures needed for reloading. This reported size-performance correlation for NaAlH 4 may guide hydrogen storage research for a wide range of nanostructured light (metal) hydrides.

Source: Journal of the American Chemical Society

DOI: 10.1021/ja710667v

Authors: Cornelis P. Baldé, Bart P.C. Hereijgers, Johannes H. Bitter, Krijn P. de Jong

Institution: Utrecht University

Language: English

Topic: Hydrogen Storage and Materials

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: green

OpenAlex ID: W1983753725

FWCI: 13.7

Cites: 43

Cited by: 228

Related to: 10