Cyclical hydrogen storage and retention in polyaniline

Hydrogen adsorption in porous nanostructured polyaniline (PANI) has been investigated to determine its potential as a hydrogen storage media. Residual gas analysis and thermogravimetric analysis were used to investigate the cyclical hydrogen adsorption in PANI. A hydrogen storage capacity of up to 3 wt % was obtained by charging the polymers at up to 3.0 × 106 Pa hydrogen at elevated temperature. Multiple charge and discharge cycles have been shown, with good retention beyond 106 sec. Hydrogen absorption with retention for greater than 10E6 sec and with multiple charge–discharge cycles has been shown in porous nanostructured polyaniline at the 3% absorption level.