Self-Healable Sandfish Scale-Inspired Scalable Triboelectric Layer for Hybrid Energy Harvesting in Desert Environment

被引：2

作者：

Chen, An-Rong ^{[1
]}

Parashar, Parag ^{[2
]}

Sharma, Manish Kumar ^{[1
]}

Shih, Jing-Siang ^{[3
]}

Yeh, Hsuan-Yu ^{[1
]}

Lin, Yen-Jui ^{[2
]}

Kaswan, Kuldeep ^{[4
]}

Fan, Kai-Po ^{[3
]}

Chen, Po-Yu ^{[1
]}

Lin, Zong-Hong ^{[2
]}

机构：

[1] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 30013, Taiwan

[2] Natl Taiwan Univ, Dept Biomed Engn, Taipei 10617, Taiwan

[3] Natl Tsing Hua Univ, Inst Biomed Engn, Hsinchu 30013, Taiwan

[4] Natl Tsing Hua Univ, Int Intercollegiate PhD Program, Hsinchu 30013, Taiwan

来源：

SMALL | 2024年

关键词：

biomimetic; hybrid energy harvesting; low adhesion; sandfish; self-healing fluorinated copolymer; solar cell; triboelectric nanogenerator; SOLAR POWER; DUST;

D O I：

10.1002/smll.202404637

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In deserts, sedimentation from frequent dust activities on solar cells poses a substantial technical challenge, reducing efficiency and necessitating advanced cost-inefficient cleaning mechanisms. Herein, a novel sandfish scale-inspired self-healing fluorinated copolymer-based triboelectric layer is directly incorporated on top of the polysilicon solar cell for sustained hybrid energy harvesting. The transparent biomimetic layer, with distinctive saw-tooth microstructured morphology, exhibits ultra-low sand adhesion and high abrasion-resistant properties, inhibits sedimentation deposition on solar cells, and concurrently harvests kinetic energy from wind-driven sand particles through triboelectric nanogenerator (TENG). The film exhibits a low friction coefficient (0.149), minimal sand adhesion force (27 nN), and a small wear area (327 mu m2). In addition, over 2 months, a solar cell with the sandfish scale-inspired structure demonstrates only a 16% decline in maximum power output compared to the bare solar cell, which experiences a 60% decline. Further, the sandfish scale-based TENG device's electrical output is fully restored to its original value after a 6-h self-healing cycle and maintains consistent stable outputs. These results highlight the exceptional advantages of employing biomimetic self-healing materials as robust triboelectric layers, showcasing sustained device stability and durability for prolonged use in harsh desert environments, ultimately contributing to a low cost-of-electricity generation paradigm. Herein, a sandfish scale-inspired self-healing fluorinated copolymer-based triboelectric layer is seamlessly integrated on top of a polysilicon solar cell to concurrently harvest both solar energy and kinetic energy associated with wind-driven sand particles via a triboelectric nanogenerator. The biomimetic triboelectric layer leverages ultra-low sand adhesion and high abrasion-resistant characteristics inherent in the sandfish scales' distinct saw-tooth morphology. image

引用

页数：14