Boosting output of biopolymer-based moisture electricity generation via synergistic mechanisms

Moisture electricity generation (MEG) devices based on biomass materials often face limitations in practical applications due to their poor power generation performance. To address this challenge, this study developed a biomass-based MEG device by chitosan and sodium lignosulfonate, significantly improving the energy output of biomass-based moisture generation devices. The MEG device achieves an open-circuit voltage up to 1.4 V and a short-circuit current of approximately 40 μA·cm −2 at a relative humidity of 75 %, enabled by the synergy of multiple mechanisms. Additionally, the device exhibits excellent linear scalability and supports series-parallel configurations, enabling it to power small electronic devices such as calculators and light-emitting diodes, as well as serve as a sensor for respiration detection. This work presents an innovative strategy for utilizing biomaterials in energy generation, offering new opportunities for sustainable development and advancing green energy technologies.