Composite　phase　change　materials　(CPCMs)　play　a　key　role　in　solar　energy　conversion　and　storage.　However,　it　is　difficult　to　efficiently　utilize　solar　energy　due　to　their　inherent　low　thermal　conductivity,　low　light　absorption　and　the　usual　competitive　nature　between　thermal　conductivity　and　latent　heat.　In　this　work,　novel　CPCMs　were　developed　by　using　TiO2-TiC-C　loaded　expanded　vermiculite　(EVT)　as　a　supporting　matrix　and　lauric-myristic-stearic　eutectic　mixture　(LA-MA-SA)　as　a　PCM.　The　EVT　was　further　acidized　(EVTa)　to　enhance　its　PCM　absorbability.　Owing　to　the　high　thermal　conductive　and　light　absorption　nature　of　TiO2-TiC-C　nanocomposite,　the　prepared　CPCMs　exhibit　efficient　light-thermal　energy　conversion.　The　thermal　conductivities　of　LA-MA-SA/EVT　and　LA-MA-SA/EVTa　were　0.694　and　0.676　W/(m　K),　respectively.　And　the　PCM　content　in　LA-MA-SA/EVT　and　LA-MA-SA/EVTa　were　64.5　and　70.6　wt%,　respectively.　Moreover,　the　feasibility　of　CPCM　being　a　water　heating　source　was　experimentally　confirmed.　These　novel　CPCMs　have　good　application　prospect　in　low　temperature　solar-thermal　installations,　such　as　temperature　adaptable　greenhouse　and　water　heating　system.　©　2019　International　Solar　Energy　Society