Fig. 1: Structural design and performance comparison of BHMEG.
From: Micro-meso-macroporous channels finely tailored for highly efficient moisture energy harvesting
a Schematic of the structural composition of BHMEG. The upper electrode is a porous gold electrode, while the two middle layers consist of different charged MXene and PVA composite hydrogels, and the lower electrode is a gold electrode. b Surface grafting modification of Ti3C2Tx MXene. c Flowchart of the process for the preparation of the freeze-assisted salting-out hydrogels, where (i) is the mixing and stirring of MXene nanosheets with the PVA solution, (ii) is the directional freeze molding, (iii) is the salting-out-induced recrystallization process, and (iv) is the SEM image of the surface and cross-section structure of the gel after removing the salting-out ions. d Comparison of the performance of the salting-out BHMEG for power generation with Hofmeister sequence ions. e Comparison of the performance of the BHMEG with that of the reported pure hydrovoltaic MEGs (left)33,34,35,36,37,38,39 and the active electrode assisted MEGs (right)40,41,42,43,44,45,46,47 in the medium humidity range (30%RH–60%RH) at 25 °C. The source data are available in the “Data availability” section.
