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Rational robust hierarchical-porous Graphene/C/SiO2 hollow microspheres (G/C/SiO2) were designed as scaffold to load sulfur. The sulfur was impregnated into the microspheres to generate sulfur-Graphene/C/SiO2 composites (S-G/C/SiO2) for Li-S batteries. The 3D porous microspheres consist of SiO2 nanoparticles connected by interconnected graphene and carbon layer, which could leave enough room for volume...
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