Implementation of Polypyrrole‐Modified Cleanroom Wiper as Electrode for Moisture‐Electricity Generation

Moisture‐electricity generation is a widely studied green power generation technology in recent years. Aiming at the defects of low output power and unsustainable output signal of moisture‐electricity generator (MEG), a new type of MEG is prepared using polypyrrole‐modified cleanroom wiper (PPy‐CRW) as electrodes. The electrodes exhibit good conductivity and can be infiltrated by sodium alginate (SA)‐based functional material, which reduces the contact resistance between electrode and functional material. In addition, graphene oxide (GO) is introduced to enhance the ion conductivity while increasing the amount of active functional groups. Additionally, the addition of hygroscopic salt LiCl and crosslinking with Ca 2+ makes MEG adsorb moisture continuously and maintain structural stability. The maximum output voltage of the PPy‐CRW‐MEG can reach 700 mV, with a stable output duration of up to 27 h in ambient, and the output power density reaches 37 μw cm −2 . This work expands the selection range of electrode materials for MEGs and provides a new view for MEG design.