Na ion batteries have prospects as sustainable solutions for electrochemical energy storage. The use of Na+ rather than Li+ ions as shuttle open possibilities to replace expensive and partially rare or critical transition metals such as Cu, Co, and Ni by other, abundant and non-toxic elements. The talk will deal with a new approach to stabilize layered cathode materials based on Mg and Mn oxides and on a novel class of inorganic binders which are ionically conducting, have excellent thermal properties and binder capabilities and can be used in water-based processes.