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Report RSE 18002341

Prototypal NIB battery based on anodic (MXenes) and catodic material fully developed in RSE



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M. Broglia (RSE SpA), M. Balordi (RSE SpA) , S. Marchionna (RSE SpA), I. Quinzeni (UniversitĂ  di Pavia), M. Soleimanzade (Politecnico di Milano)

ACCUMULO 2017 - Energy storage materials and technologies for the electric

This report presents the development activities of cathodic and anodic materials for sodium-ion batteries (NIB). MAXenes as cathode materials are obtained by chemical exfoliation of MAXphases, produced at RSE by Spark Plasma Sintering. Moreover, the cathode material (Na0.44MnO2) development has gone on, compering two different synthesis processes (sol-gel Vs. solid state). According to the obtained data, a NIB single cell has been simulated, retrieving performances equivalent to the state of the art.

This report describes the activities carried out in RSE labs to develop anodic and cathodic materials toassemble Sodium-ion batteries (NIB). Particular attention has been given to the development of theanodic component, focusing on the production and characterization of 2D compounds materials, knownas MXenes. Experimental tests have been carried out to correlate the effect of the various steps in theirproduction sequence with the electrochemical performances (e.g. specific capacity).

In addition, scaleuptests have been launched to validate the Spark Plasma Sintering (SPS) as a potential technique for thesynthesis of the MAXphases on industrial scale; these compounds are the starting materials for theproduction of MXenes. Also for the development of cathode materials further synthesis tests (via sol-gelvs. solid state) of Manganese-Sodium oxides have been done, in order to maximize their electrochemicalperformances and correlate them with their chemical-physical properties.

Overall, the experimentalresults for both classes of electrode materials confirm that RSE labs have optimized synthesis andcharacterization procedures for the development and assembly of NIB systems; in particular, it has beenverified how the compounds developed in this experimentation, Ti3C2 as anode and Na0.44MnO2 ascathode are extremely compatible each other in terms of Na-ion storage performance. A prototypal NIBmono-cell assembled with two separate coin electrodes, each one composed of an independent semi-cellfully developed in RSE, has been tested, showing results consistent with the state-of-the-art available in literature.

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