Coal-based heat storage carbon material and preparation method therefor and application thereof, and composition for preparing coal-based heat storage carbon material and application of composition

A composition for preparing a coal-based heat storage carbon material, wherein the composition comprises coal, a binder, and an optional thermally conductive filler;

• wherein based on total weight of the composition, a content of the coal is in a range of 10 to 80 wt %, a content of the binder is in a range of 10 to 40 wt %, and a content of the thermally conductive filler is in a range of 0 to 55 wt %;
• wherein based on total weight of the coal, the coal contains 0.5 to 20 wt % of ash and 0 to 30 wt % of volatile;
• and
• wherein the coal has a C/H ratio of greater than 2.

A method for preparing a coal-based heat storage carbon material, wherein the method comprises steps of:

• S1:
• mixing components of a composition to obtain a mixture;
• S2:
• subjecting the mixture to compaction and molding to obtain a molded sample;
• S3:
• roasting the molded sample under vacuum or inert atmosphere to obtain the coal-based heat storage carbon material;
• wherein the composition comprises coal, a binder, and an optional thermally conductive filler;
• wherein based on total weight of the composition, a content of the coal is in a range of 10 to 80 wt %, a content of the binder is in a range of 10 to 40 wt %, and a content of the thermally conductive filler is in a range of 0 to 55 wt %;
• and
• wherein based on total weight of the coal, the coal contains 0.5 to 20 wt % of ash and 0 to 30 wt % of volatile, and has a C/H ratio of greater than 2.