Structurally stable Mg-doped P2-Na<sub>2/3</sub>Mn<sub>1−y</sub>Mg<sub>y</sub>O<sub>2</sub> sodium-ion battery cathodes with high rate performance: insights from electrochemical, NMR and diffraction studiesRaphaële J. Clément, Clare P. Grey|Energy & Environmental Science|2016Cited by 360