Table 2. ΔH, packing density and energy density of thermal storage based on experimental measurement and calculation.

			Energy Density (kJ/kg)
	ΔH (eV)	Packing Density (wt%)	Calculation	Experiment
Para-AZO	0.558		217.9	/
RGO-para-AZO	1.38	57.9	372.2	269.8
Ortho-AZO	0.77		282.4	/
RGO-ortho-AZO	1.224	60.6	274.9	149.6[a]

^[a]The thermal energy were measured until the half-ives of thermal reversion of Z-isomers.