Yafei Cheng

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Abundant disorderly-distributed surface functional groups, such as hydroxyl, carboxyl, ether and amino groups, endow an isolated graphene oxide quantum dot (GOQD) the polar property due to the symmetry breaking, although the aggregated counterparts present no polarization owing to the random orientation. Here, flexible polarized films were fabricated using(More)
Cost-effective catalysts for electrocatalytic water splitting play a key role in the renewable energy research. Although Pt has been regarded as the best catalyst, its wide applications have been impeded by its high cost and scarce natural abundance. Therefore, decreasing the Pt usage for electrocatalyst design is significant toward the hydrogen evolution(More)
Location algorithm based on fingerprint has been applied to underground tunnel of coal mines. However, obvious and unignorable errors will occur if reference locations are selected sparsely when detecting unknown points, which may make it difficult for locating people in coal mines. Hence, an underground location algorithm based on convex sets of Received(More)
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