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We have developed binder-free electrode materials composed of CoO quantum dots on three-dimensional (3D) graphene hydrogels. The CoO quantum dots with size of only 3∼6nm are uniformly decorated onto the surface of graphene, then as building blocks assembled to 3D structures during a solvothermal process. The designed electrode configuration takes advantage of ultra-small particle sizes, large surface...
NiOOH nanosheet/graphene hydrogels (H–NiOOH/GS), with mesoporous NiOOH nanosheets uniformly dispersed within the highly interconnected 3D graphene network, are constructed and studied for the first time by a mixed solvothermal and hydrothermal reaction. The effect of solvent composition on the morphology, phase, dispersibility of nanocrystal and hydrogel strength is systematically studied. As binder-free...
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