23 Feb '15, 10am

Stable, high-capacity zinc iron oxide electrode for Li-ion batteries

Stable, high-capacity zinc iron oxide electrode for Li-ion batteries 23 February 2015 A team from Australia and India have developed a novel zinc iron oxide nanocomposite ZnFe2 O4 –C as an electrode material for rechargeable Li-ion batteries. The composite ZnFe2 O4 –C electrodes are capable of delivering a very stable reversible capacity of 681 mAh g−1 (96% retention of the calculated theoretical capacity of ∼710 mAh g−1 ) at 0.1 C after 100 cycles. In their paper in the Journal of Power Sources , they report that the rate capability of the composite is significantly improved and obtained capacity was as high as 702 at 0.1, 648 at 0.5, 582 at 1, 547 at 2 and 469 mAh g−1 at 4 C (2.85 A g−1 ), respectively. When cell is returned to 0.1 C, the capacity recovery was still ∼98%. Overall, the electrochemical performance (in terms of cycling stability, high rate capability, and c...

Full article: http://www.greencarcongress.com/2015/02/20150223-zinc.html

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