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Oxygen reduction reaction (ORR) is crucial to energy conversion technologies such as fuel cells and metal–air batteries. Three-dimensional (3D) heteroatom-doped graphene-based materials have been reported to be efficient electrocatalysts for ORR in fuel cells for energy conversion. In this study, a novel cobalt-embedded nitrogen-doped graphene xerogel (denoted as Co-NGX) was prepared by a facile one-step...
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