Additive Manufacturing for Nanogenerators: Fundamental Mechanisms, Recent Advancements, and Future Prospects

Area of Science:

• Materials Science
• Energy Harvesting Technologies
• Nanotechnology

Background:

• Additive manufacturing (AM) offers flexibility, cost-effectiveness, and customization, driving nanogenerator advancements.
• Nanogenerators are crucial for sustainable energy and the Internet of Things (IoT).

Purpose of the Study:

• To provide an in-depth review of AM for piezoelectric and triboelectric nanogenerators.
• To analyze fundamental mechanisms, recent advancements, and future prospects of AM in nanogenerator fabrication.

Main Methods:

• Systematic examination of common AM techniques (e.g., FDM, DIW, SLA, DLP) for nanogenerators.
• Analysis of AM-enabled advantages: material versatility, structural optimization, microstructure design, and integrated printing.

Main Results:

• AM enhances nanogenerator performance metrics like surface charge density and piezoelectric constant.
• AM techniques improve output voltage, current, and power density compared to conventional methods.
• Hierarchical relationships between AM technologies, performance optimization, and applications are elucidated.

Conclusions:

• AM significantly improves nanogenerator performance and enables diverse applications in energy harvesting, sensors, and human-machine interaction.
• Addressing challenges in fabrication quality, scalability, and efficiency is key for industrial deployment.
• Continued innovation in AM for nanogenerators promises further progress in sustainable energy solutions.