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Energy crisis and environmental pollution are two types of problems urgently needed to address in the world.To alleviate these two issues, much effort has been devoted to develop new-generation supercapacitors as green energy and storage.Various promising electrode materials have been investigated, such as transition metal oxides, metal hydroxides or layered double hydroxides (LDHs).In the case of LDH-based supercapacitors, one typical avenue is to build up integrated architectures with micro-/nanostructures using a simple and facile approach.