29 Dec '14, 12pm

Berkeley Lab/MIT team identifies promising multivalent cathode materials for high energy-density batteries:

Berkeley Lab/MIT team identifies promising multivalent cathode materials for high energy-density batteries 29 December 2014 A team from Lawrence Berkeley National Laboratory and MIT has used high-throughput first-principles calculations to evaluate systematically the performance of spinel-structure compounds as multivalent intercalation cathode materials. Their work, reported in the RSC journal Energy & Environmental Science , spanned a matrix of five different intercalating ions and seven transition metal redox active cations. Batteries using multivalent ions—such as Mg2+ and Ca2+ (e.g., earlier post )—are promising candidates for achieving higher energy density than available with current Li-ion technology. As an example, Mg, being divalent and denser, is theoretically capable of delivering a higher volumetric energy-density (3833 mAh cm-3 ) than Li (2061 mAh cm-3 ). How...

Full article: http://www.greencarcongress.com/2014/12/20141229-multival...

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