Hierarchical NiCo2O4 spinel nanowire array (H-NCO-NWA) electrocatalysts have been prepared through a facile template-free co-precipitation route. The as-prepared H-NCO-NWA exhibits a mesoporous (ca. 8 nm) structure and a high specific surface area of 124 m2 g−1. The assembled Li–air batteries presented lower overpotentials, reasonable specific capacity, and enhanced cyclability.
The article was received on 27 Jun 2014, accepted on 26 Aug 2014 and first published on 26 Aug 2014
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