Efficient Output and Stability Triboelectric Materials Enabled by High Deep Trap Density

Area of Science:

• Materials Science
• Nanotechnology
• Sustainable Energy

Background:

• Paper is a sustainable material favored for its biodegradability and low cost.
• Integrating paper with triboelectric nanogenerators (TENGs) offers potential for self-powered applications.
• Existing paper-based triboelectric materials suffer from rapid charge dissipation due to poor charge storage.

Purpose of the Study:

• To develop a paper-based triboelectric material with efficient charge storage capabilities.
• To enhance the performance and stability of paper-based TENGs.
• To provide a practical solution for powering small electronic devices.

Main Methods:

• A novel paper-based triboelectric material was created using a hydrogen bond strategy to assemble deep traps.
• The material's deep trap density and dielectric properties were characterized.
• TENG devices were fabricated using the new material and tested for output power density and long-term stability.

Main Results:

• The developed material exhibited a ~54-fold increase in deep trap density compared to pure paper.
• A ~10-fold higher dielectric constant at high frequency was observed.
• The TENG device demonstrated a ~45-fold higher peak output power density and maintained stable voltage over 20,000 cycles.
• The material showed excellent environmental stability, with minimal voltage reduction in heat.

Conclusions:

• The hydrogen bond-assembled deep traps significantly improve charge storage in paper-based triboelectric materials.
• This advancement leads to substantially enhanced performance and durability in TENG devices.
• The material presents a viable and robust solution for powering electronics in demanding environments.