Technologies and implementations for graphene integrated energy storage devices having capacitive-like properties are generally disclosed. Such energy storage devices may comprise capacitive-like properties and may include a first electrode including graphene, one or more electrolytes arranged in contact with the first electrode, and a second electrode arranged in contact with the one or more electrolytes. The energy storage device may further be configured to provide pseudocapacitance based at least in part on a surface layer deposition of a chemical entity accompanied by a charge transfer at the first electrode.