An energy-efficient and sustainable economy requires the development of novel materials for energy storage and conversion. Carbon materials and their nanocomposites are widely used in energy storage and conversion systems because of their stable physicochemical properties, good electrical conductivity, low cost, and facile availability [1-2]. The technical application of carbon materials generally need precise control over their mesoscale and microscale architectures, which call for the development of easy and efficient synthetic protocols towards unprecedented carbon and metal/carbon composite materials.
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