Ultrahigh current output performance in piezoelectric energy harvesters enabled by phase boundary-bandgap synergistic engineering.

ABSTRACT: With the rapid expansion of the Internet of Things, piezoelectric energy harvesting has become essential for sustainable self-powered microsystems. However, achieving sufficient output current under operating conditions remains a persistent challenge. Herein, a phase-boundary and bandgap co-engineering strategy is implemented for potassium sodium niobate-based ceramics by incorporating BiFeO₃ into 0.97(K_0.5Na_0.5)(Nb_0.96Sb_0.04)O₃-0.03(Bi_0.5Na_0.5)_0.85(Li_0.5Nd_0.5)_0.15ZrO₃. This induces a rhombohedral-tetragonal phase boundary that establishes nanoscale multiphase coexistence alongside an elevated average polarization displacement, enabling an exception

SUBMITTER: Lin Y 

PROVIDER: S-EPMC12696096 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature