On the existence of A-site deficiency in perovskites and its relation to the electrochemical performance.

Konysheva, Elena Yu; Xu, Xiaoxiang; Irvine, John T S · Adv Mater · 2012

basic_science · Level V

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Abstract

The low range of A-site deficiency in perovskite structures with Ni cations was verified by neutron powder diffraction, transmission electron microscopy, and thermogravimetric analysis. A thermodynamic approach has been utilized, for the first time, to predict the extent of A-site deficiencies within the perovskite structure, introducing simple prediction criteria that could be adopted for designing advanced materials.

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