1754-5692(2009)2:7;1-Z Energy& Environmental Science www.rsc.org/ees Volume 2 | Number 7 | July 2009 | Pages 713–804 COVER ARTICLE Aron Walsh et al. Ternary cobalt spinel oxides for solar driven hydrogen production: Theory and experiment REVIEW Nigel Brandon et al. Fuel cells for micro-combined heat and power generation ISSN 1754-5692