Electricity form water without any any energy
Scientist Dr.R.K.Kotala and his team has successfully find a way to produce electricity from water at Delhi's National Physical Laboratory (NPL) that can be produced at room temperature itself.
Basic concept:
They used an Nano porous magnesium ferrite to split the water in Hydronium(H3O) ions and Hydroxide(OH) ions.
And used the silver and Zinc electrodes to make the cell to produce electricity.
Working:
The Hydroelectric cell uses the magnesium ferrite of 2inch dia to produce 150ma of current.When it is connected in series with four cells they produced 3.70volts which is capable to run a small plastic fan or a LED light of 1 Watt.
It can also be extended to one week.
From the publication:
"Dissociation of water molecule occurs
on octahedrally coordinated unsaturated suface cations and oxygen vacancies
created by lithium substitution in magnesium ferrite. Lower synthesis
temperature of ferrite has generated nanopores in microstructure. Dissociated
hydronium and hydroxyl ions are transported through surface and capillary
diffusion in porous ferrite network towards attached zn and ag electrodes.
Water molecule dissociation ability of nanoporous ferrite has been exploited to
develop a green electrical energy cell, which is a combination of material
science and electrode chemistry. The innovated cell has been nomenclatured as
hydroelectric cell (hec). When hec is partially dipped in deionized water,
spontaneously hydroxide and hydronium ions are produced by water molecule
dissociation. Hydronium ions trapped in nanopores develop enough electric field
that further dissociates physisorbed water molecules. Thereby, the process of
water molecule dissociation is accelerated in a bigger way to increase ionic
current in the cell. Oxidation of zn electrode by hydroxide ion and reduction
of h3o+ at ag electrode develop voltage and electric current in the
cell. The hec cell of a 17 cm2 area is able to generate a short circuit current of 82 ma
and 920 mv emf with a maximum output power of 74 mw, which is three order
higher than reported output power 1.4 μw/cm2 produced by water in cement matrix. Hydroelectric cell
performance is repetitive, stable and possesses potential to replace
traditional ways of generating renewable energy in terms of cost and safety.
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