Song, K.Jung, J.Heo, Y. -ULee, Y. C.Cho, KyeongjaeKang, Y. -M2014-08-222014-08-222013-10-11Song, K., J. Jung, Y. -U Heo, Y. C. Lee, et al. 2013. "α-MnO₂ nanowire catalysts with ultra-high capacity and extremely low overpotential in lithium-air batteries through tailored surface arrangement." 15(46): 20075-2007914639076http://hdl.handle.net/10735.1/3919We here report on very high capacity (11000 mA h g⁻¹), superb rate capability (4500 mA h g⁻¹ at 5000 mA g⁻¹) and high reversibility of Li-air batteries using α-MnO₂ NW catalysts mainly associated with their relatively large amount of Mn³⁺ exposed on the NW surface and a unique mechanism for deposition of discharge products. Our findings of the unprecedentedly fast Li-ion transport and reversible formation-decomposition of discharge products attributed to the modified surface arrangement of α-MnO₂ NWs suggest a strategy for achieving high-power Li-air batteries in combination with nano-architecture tailoring.en©2013 The Owner Societies.Manganese oxidesLithium-air batteriesLithium peroxidearticle154620075