fig7
From: Phase change materials microcapsules reinforced with graphene oxide for energy storage technology

Figure 7. (A) Fabrication of PCM@CNTs microcapsules. (B) FE-SEM image of CNTs distributed in phase change microcapsules. (C) Thermal conductivity of different content of CNTs in phase change microcapsules[75] (Copyright 2020, Elsevier).