Experimental study demonstrates reversible oxygen reduction and evolution in ZnCo2O4-decorated carbon nanotubes, indicating high utility for rechargeable zinc-air batteries.
ZnCo2 O4 quantum dots anchored on nitrogen-doped carbon nanotubes (N-CNT) retain the high catalytic activity of ZnCo2 O4 to oxidize water while enabling an efficient oxygen reduction performance thereby combining these desirable features. These advantages realize a bifunctional catalytic activity for ZnCo2 O4 /N-CNT that can be used in rechargeable zinc-air batteries.
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Liu et al. (2016) studied this question.