The performance of electrode materials in lithium-ion (Li-ion), sodium-ion (Na-ion) and related batteries depends not only on their chemical composition but also on their microstructure. The choice of a synthesis method is therefore of paramount importance. Amongst the wide variety of synthesis or shaping routes reported for an ever-increasing panel of compositions, spray-drying stands out as a versatile tool offering demonstrated potential for up-scaling to industrial quantities. In this review, we provide an overview of the rapidly increasing literature including both spray-drying of solutions and spray-drying of suspensions. We focus, in particular, on the chemical aspects of the formulation of the solution/suspension to be spray-dried. We also consider the post-processing of the spray-dried precursors and the resulting morphologies of granules. The review references more than 300 publications in tables where entries are listed based on final compound composition, starting materials, sources of carbon etc.

The elusive Na₂Fe₂(SO₄)₃ stoichiometric compound was obtained through a precipitation method and is electrochemically active as a cathode.

Layered oxides Na_xFe_1/2Mn_1/2O₂ (x = 1 and 2/3) are characterized by little energy loss which is necessary for applications in electronic devices.

A CO ₂ -sourced self-standing solid electrolyte membrane is prepared and evaluated for room temperature operating lithium batteries.