Synergetic and persistent harvesting of electricity and potable water from ambient moisture with biohybrid fibrils

Abstract

Harnessing ambiguous moisture for energy and water is attractive to address decentralized demand of sustainable energy and uncontaminated water supply, especially in arid and hydropenic regions. Despite that discontinuous harvest...

Spontaneous energy generation at the air–hydrogel interface with ultrahigh ion activity

“…A small internal resistance of the AIEG can be attributed to a high concentration of K + in the hydrogel and certainly an ultrahigh concentration of K + at the interface. Thus, compared to the performance of air-based electricity devices reported previously, 9,10,12,14,[46][47][48][49][50] the duration of the current output of the AIEG is much longer, which is also free of complex asymmetric material design or external energy, such as light and heat (Fig. 5d).…”

“…One common strategy of power generation directly in air is based on moisture adsorption. [9][10][11][12][13] The uneven distribution of moisture in materials would give rise to a proton gradient, thereby producing power output. However, the limited number of free carriers (H + ) places restrictions on the performance, especially a low duration time.…”

Two-Dimensional Nanomaterials for Moisture-Electric Generators: A Review

“…Therefore, Han et al initiated the introduction of a MOF into biofibers, and it was found that the voltage could be improved to 0.66 V at an RH of 99%. More surprisingly, the device could cogenerate water with a production rate of 0.8 g g –1 h –1 . In the study, sulfonate cellulose nanofibril membranes were decorated with nickel ions and organic ligand linker (e.g., HHTP) through hydrogen bonding (Figure a).…”

“…(ii) Comparison of the capability of water uptake, demonstrating the high affinity of water absorption of the Ni 3 (HHTP) 2 -decorated biofibrils. Reprinted with permission from ref . Copyright 2022 Royal Society of Chemistry.…”

“…More surprisingly, the device could cogenerate water with a production rate of 0.8 g g −1 h −1 . 125 In the study, sulfonate cellulose nanofibril membranes were decorated with nickel ions and organic ligand linker (e.g., HHTP) through hydrogen bonding (Figure 10a). The addition of the MOF to the biofibril membrane significantly enhances the conductivity, and more importantly, it offers a greater extent of porosity that increases the relevant surface area.…”