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Lightweight borohydrides electro-activity in lithium cells

TitleLightweight borohydrides electro-activity in lithium cells
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2016
AuthorsMeggiolaro, D., Farina L., Silvestri L., Panero S., Brutti S., and Reale P.
KeywordsBorohydrides, Complex metal hydrides, Conversion process, Conversion reactions, Electric batteries, Electro-activity, Electrochemical electrodes, Electrodes, Hydrides, Ions, Lithium, Lithium alloys, Lithium compounds, Lithium-ion batteries, Negative electrode, Negative electrode material, Performance limits

As a substitute for graphite, the negative electrode material commonly used in Li-ion batteries, hydrides have the theoretical potential to overcome performance limits of the current state-of-the-art Li-ion cells. Hydrides can operate through a conversion process proved for some interstitial hydrides like MgH2: MxAy + n Li = x M + y LimA, where m = n/y. Even if far from optimization, outstanding performances were observed, drawing the attention to the whole hydride family. Looking for high capacity systems, lightweight complex metal hydrides, such as borohydrides, deserve consideration. Capacities in the order of 2000-4000 mAh/g can be theoretically expected thanks to the very low formula unit weight. Although the potential technological impact of these materials can lead to major breakthroughs in Li-ion batteries, this new research field requires the tackling of fundamental issues that are completely unexplored. Here, our recent findings on the incorporation of borohydrides are presented and discussed. © 2016 by the authors.


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Citation KeyMeggiolaro2016