Effect of gel ageing and electrode corrosion on the performance of direct laser writing carbonization-enabled hydrogel-based moist-electric generators

Abstract

and delivered stable operation for more than 300 h in an ambient environment. In-depth studies further revealed the effect of time-ageing treatment of the hydrogel active material on its ionic conductivity and water uptake ability and the power performance of the finally assembled MEGs. Lastly, the combined investigations using microscopy, spectroscopy and electrochemical corrosion tests allowed us to unambiguously identify the critical roles of the corrosion reaction occurring at the metallic electrodes in enhancing the voltage and current performance of the hydrogel-based MEG.

Topics & Concepts