Fig. 5: Regulation of PCNH-MEG’s output performance.
From: Cellulose hydrogel with in-situ confined nanopores for boosting moist-electric conversion
PCNH and MEG are defined as delignified pomelo peel (DPP)-confined carboxymethyl cellulose (CMC) nanofluidic hydrogel and moist-electric generator, respectively. Performance optimization of PCNH-MEG in terms of open-circuit voltage (Voc) and short-circuit current (Isc) with different A Thickness, B CMC’s DS, and C CA’s concentration. D The calculated binding energy values of the two pairs of components in PCNH’s polymer networks based on the density functional theory (DFT) optimized structures. The curves of E Voc and F Isc versus time at different RH conditions. G The charging and discharging behavior of PCNH-MEG at 70% relative humidity (RH). H Continuous output voltage of PCNH-MEG over a long duration for over 180 h at 90% RH. The inset is an illustration of the PCNH-MEG device (left) and a graph of data collected from 174 h to 178 h (right). I The Voc of PCNH-MEG before and after turning over the upper side of the PCNH. J Output voltage (orange curve decorated with the rhombus), current density (green curve decorated with the ball), and power density (cyan curve) of PCNH-MEG at 90% RH with external resistances varied from 100 to 108 Ω (the inset is an equivalent circuit diagram). K The performance comparison of representative MEGs based on the active electrode: the power density with the variation of RH.
