▎ 摘　　要

Piezoelectric materials are becoming increasingly attractive in the modern energy industry since its unique capability to harvest discrete mechanical energy. Nevertheless, most piezoelectric materials are fabricated into low dimensional (1D or 2D) products which are difficult to produce ideal output performance due to the limited utilization of strain in the normal direction. Selective laser sintering (SLS) 3D printing technique is featured with manufacturing customized three-dimensional structure for the purpose of magnifying piezoelectric output but lacks high performance printable piezoelectric materials. Herein in this work, we successfully prepared a novel polyvinylidene fluoride (PVDF)/graphene (GP) nanocomposite suitable for SLS 3D printing with boosted piezoelectric performance due to the synergistic effect of improved electrical properties, interface interaction and 3D structure design. This work not only enriches piezoelectric material varieties for SLS 3D printing, but also demonstrates the huge potential that 3D structural design can bring to piezoelectric performance optimization.