Enhanced Output Performance of a Flexible Piezoelectric Nanogenerator Realized by Lithium-Doped Zinc Oxide Nanowires Decorated on MXene

• DOI: 10.1021/acsami.2c05857
• Publication Date: 2022-06-06T18:50:31Z
• Authors: Viet Anh Cao; Minje Kim; Sol Lee; Chang Geun Kim; Phuoc Cao Van; Trinh Nguyen Thi; Jong-Ryul Jeong; Junghyo Nah
• Keywords: Nanogenerator; Poling; Lead zirconate titanate

A flexible piezoelectric composite is composed of a polymer matrix and ceramic fillers to achieve good mechanical flexibility processability. The overall performance largely determined by the filler inside. Thus, different dispersion methods additives that can promote ceramics optimal structures have been actively investigated. However, relatively few attempts made develop effectively contribute enhancement devices. In present work, we introduce fabrication devices Li-doped ZnO nanowires (Li: NWs) grown on surface MXene (Ti3C2) via hydrothermal process. Through this approach, semiconductor–metal hybrid structure formed, increasing permittivity. Moreover, Ti3C2 layer serve as local ground in so ferroelectric phase-transformed Li: NWs its be more polarized during poling addition, NW-covered prevents aggregation metallic particles, promoting uniform electric field distribution As result, output nanogenerator (PENG) fabricated with NW/Ti3C2 was greatly improved compared without platform. Specifically, demonstrated twofold higher power density (∼9 μW/cm2) values obtained from PENG based NWs. approach introduced work easily adopted for an effective design improve composite.