Harvesting energy via stimuli‐free water/moisture dissociation by mesoporous SnO ₂ –based hydroelectric cell and CuO as a pump for atmospheric moisture

Abstract

Water dissociation, in general, requires external stimuli such as light energy or electricity. Here, we present a stimuli-free water dissociation using mesoporous SnO 2 -based hydroelectric cell that can directly be exploited to generate electric power for portable applications. The device configuration is almost identical to metal-air batteries but follows altogether a different reaction pathway. The mesoporous SnO 2 -based hydroelectric cell dissociates water molecule into hydroxyl ions (OH -) and hydronium ion without any stimuli, transports hydronium ions to the opposite end, and simultaneously acts as the separator. The OHreact with Al electrode to release the electrons, whereas hydronium ions get reduced at the Ag electrode to produce a potential difference as high as 1000 ± 20 mV between the electrodes that is stable over 3500 hours. The device also shows its potential toward electric power generation from atmospheric moisture with the help of CuO layer that acts as moisture pump.

Cobalt‐based metal organic framework ( Co‐MOFs )/graphene oxide composites as high‐performance anode active materials for lithium‐ion batteries

“…However, Co‐MOFs as active materials illustrate a pair of obvious oxidation and reduction peaks. This means that Co‐MOFs as active materials show a similar electrochemical reaction process for metal compound such as CuO or SnO 2 33‐35 . Contact current charge and discharge tests show that graphene oxide has a quite high initial discharge specific capacity at various current densities.…”

“…This means that Co-MOFs as active materials show a similar electrochemical reaction process for metal compound such as CuO or SnO 2 . [33][34][35] Contact current charge and discharge tests show that graphene oxide has a quite high initial discharge specific capacity at various current densities. But the speed of capacity decay is very fast.…”

Electricity generation by splitting of water from hydroelectric cell: An alternative to solar cell and fuel cell

“…It results into a continuous flow of electric current and voltage developed in the cell. Till now 12 research papers have been published in SCI peer reviewed international journals by Kotnala et al group and nine from other groups in last 3 years 37‐46 . With further study of base material, the initial key material magnesium ferrite with nominal lithium substitution has been strategically processed and engineered to make it Nano porous and oxygen deficient for water splitting at room temperature.…”

“…Till now 12 research papers have been published in SCI peer reviewed international journals by Kotnala et al group and nine from other groups in last 3 years. [37][38][39][40][41][42][43][44][45][46] With further study of base material, the initial key material magnesium ferrite with nominal lithium substitution has been strategically processed and engineered to make it Nano porous and oxygen deficient for water splitting at room temperature. Magnesium ferrite is a soft magnetic material (general formula AB 2 O 4 ) and it is highly resistive among all ferrites due to oxygen vacancies.…”

Shining New Light on the Kinetics of Water Uptake by Organic Aerosol Particles

“…Inspired by these natural phenomena, the uptake of water vapor by various surfaces has become a vibrant research topic. For example, it has been shown that atmospheric water harvesting can be used to produce freshwater, − support irrigation systems, or generate electric power. − …”