Section change supplies have important utility prospects in thermal power storage and administration. Nonetheless, challenges similar to low thermal conductivity, liquid leakage and strong rigidity have hindered their sensible utility. On this examine, a twin encapsulation technique was adopted, utilizing highly-oriented graphite framework (HOGF) as the massive framework and polyimide/carbon nanotube (PI/CNTs) aerogel because the small framework to assemble an oriented carbon skeleton with excessive thermal conductivity. Subsequently, it was used to impregnate n-octadecane (OD), and composite part change supplies (OHPC-x) with bidirectional excessive thermal conductivity, warmth storage and excessive photothermal efficiency had been efficiently ready. The rise of OD endows OHPC with glorious warmth storage capability, and the enthalpy worth of OHPC-2 can attain 164.46 J/g. As well as, the lamellar construction of HOGF supplies phonon transmission channels, endowing the OHPC composite with a comparatively excessive in-plane thermal conductivity (5.8913 W/m·Ok). CNTs, as thermal conductive fillers and light-weight collectors, can’t solely increase the warmth switch space but in addition cut back thermal resistance. Their addition enabled OHPC to attain an enhanced axial thermal conductivity (2.2934 W/m·Ok) and a excessive photo-thermal conversion price (86.9%). The developed composite materials has achieved an ideal mixture of a number of features and holds nice utility potential within the environment friendly utilization of photo voltaic power, constructing thermal administration, and the safety of digital tools.
