▎ 摘　　要

NOVELTY - Single-atom material coated based on host and guest comprises target single-atom guest material A, host material B with a specific inclusion effect on A, and the auxiliary material C with a regulating effect, where the amount target single-atom guest material A is 0.1-50%, the main material B with a specific inclusion effect on A is 0.1-70%, and the auxiliary material C with regulating effect is 0.1-70%. USE - The single atom material based on host-guest coating is useful in photo-catalytic reaction, electro-catalysis reaction, lithium sulphur battery, zinc air battery, toxic gas adsorption and fuel cell. ADVANTAGE - The method uses industrialized cyclodextrin and sandwich compound as raw materials, utilizes intermolecular force, provides hydrophobic binding site as a host (host) to wrap various suitable objects (guests) e.g. sandwich compounds, avoids use of organic reagents, is more environmentally friendly, and has low cost. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparation method of single-atom material based on host-guest coating, comprising (i) stirring and mixing vessel, using the target single-atom guest material A and host material B with a specific inclusion effect on A, dissolving the two materials in water to form an aqueous solution, and stirring until the aqueous solution becomes a transparent solution, (ii) adding the auxiliary material C which has the adjustment function, continuously stirring and mixing evenly, and obtaining the precursor of the product through homogeneous reaction process, and (iii) drying the homogeneously mixed solution, and carbonizing to obtain single-atom material based on host-guest coating.