Evaporation-Driven Energy Generation Using an Electrospun Polyacrylonitrile Nanofiber Mat with Different Support...

Area of Science:

• Materials Science
• Energy Harvesting
• Nanotechnology

Background:

• Water evaporation-driven energy harvesting offers a low-cost green energy solution.
• Polyacrylonitrile (PAN) nanofiber mats are a potential material for these generators.
• PAN nanofiber mats require support substrates for stability and performance enhancement.

Purpose of the Study:

• To develop PAN nanofiber-based evaporation-driven electricity generators (PEEGs).
• To investigate the impact of various support substrates on PEEG performance.
• To confirm the feasibility of electrospun PAN nanofiber mats in energy harvesting.

Main Methods:

• Electrospun PAN nanofiber mats were fabricated.
• Mats were dip-coated in nanocarbon black (NCB) solution to enhance hydrophilicity.
• PEEGs were constructed using different substrates: fiberglass, copper, stainless mesh, and fabric screen.
• Electrical outputs (voltage and current) were measured for each substrate configuration.

Main Results:

• PAN nanofiber mats were successfully modified into hydrophilic materials using NCB.
• PEEGs with fiberglass, copper, stainless mesh, and fabric screen substrates showed varying electrical outputs.
• The fabric screen substrate achieved the highest peak electricity outputs (215.9 mV and 121.4 μA).

Conclusions:

• The study confirms the feasibility of using electrospun PAN nanofiber mats for evaporation-driven energy harvesting.
• Support substrate selection significantly impacts the electrical generation performance of PEEGs.
• This research provides insights for developing advanced nanofiber-based evaporation-induced electricity devices.