▎ 摘　　要

Nanostructured bulk composites consisting of Bi2Te3 nanowires (NWs) with graphene particles are fabricated with different graphene content, and their thermoelectric properties were examined. As-prepared graphene materials were evenly distributed into the Bi2Te3 NW matrix, leading to the formation of the graphene/Bi2Te3 composite structures. The sintered composite with 0.5 wt% graphene content generated improved thermoelectric power factor of 688.9 mu W/m K-2, compared to the Bi2Te3 NW sample without grapheme, because of the enhanced Seebeck coefficient of the composite originating from the decreased carrier concentration. Our synthesized graphene/Bi2Te3 NW hybrid composites are promising route to achieve high performance of thermoelectric materials.