▎ 摘　　要

NOVELTY - Concrete composite comprises concrete and a thermoelectric material comprising a composite sulfide mineral, where the composite comprises at least 20 wt.% concrete. USE - The concrete composite is useful for electrical circuit, and generating electricity, and used in wall, a floor, a post or a building (all claimed). ADVANTAGE - The concrete composite generates electricity in an environmentally-friendly state, and is energy efficient, and improves thermoelectric effect. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: an electrical circuit comprising the concrete composite, and a pair of electrical conductors; a method for generating a potential difference, involving providing the concrete composite, providing a temperature difference between a first side of the composite and a second side of the composite, and connecting the composite via a pair of electrical conductors to an electrical circuit; and a method of making the concrete composite, involving (a) providing aggregate, (b) providing a binder, (c) providing the thermoelectric material, (d) mixing the aggregate, binder and thermoelectric material to form a mixture, and (e) forming the mixture into the composite comprising at least 20 wt.% concrete.