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Hee-Dae Lim, Kyu-Young Park, Hyelynn Song, Eui Yun Jang, Hyeokjo Gwon, Jinsoo Kim, Yong Hyup Kim, Márcio D. Lima, Raquel Ovalle Robles, Xavier Lepró, Ray H. Baughman and Kisuk Kang Enhanced Power and Rechargeability of a Li−O2 Battery Based on a Hierarchical-Fibril CNT Electrode Advanced Materials 25

Version of Record online: 19 DEC 2012 | DOI: 10.1002/adma.201204018

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Hierarchical carbon electrodes with highly aligned carbon nanotube (CNT) fibrils are fabricated, and it is demonstrated that these electrodes, with aligned pores, can significantly enhance the cyclability and rate capability of Li−O2 batteries. The highly aligned pore structure enables good accessibility of oxygen to the inner electrode, which leads to a uniform deposition of discharge products on the individual CNTs.

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