New Storage possibility - halide splitting

mike95490 Solar Expert Posts: 9,583 ✭✭✭✭✭
Chemistry of Personalized Solar Energy

Given that the heat of formation of water is 237 kJ/mol, then the storage of 20 kW-h can be achieved by splitting only 5.5 L of water per day.

discrete multielectron excited state, we returned to the most basic element of chemistry, the two-electron, two-center (2e−2c) bond

and then we leave Mike in the dust....

Personalized energy (PE) is a transformative idea that provides a new modality for the planet’s energy future. By providing solar energy to the individual, an energy supply becomes secure and available to people of both legacy and nonlegacy worlds and minimally contributes to an increase in the anthropogenic level of carbon dioxide. Because PE will be possible only if solar energy is available 24 h a day, 7 days a week, the key enabler for solar PE is an inexpensive storage mechanism. HY (Y = halide or OH−) splitting is a fuel-forming reaction of sufficient energy density for large-scale solar storage, but the reaction relies on chemical transformations that are not understood at the most basic science level. Critical among these are multielectron transfers that are proton-coupled and involve the activation of bonds in energy-poor substrates. The chemistry of these three italicized areas is developed, and from this platform, discovery paths leading to new hydrohalic acid- and water-splitting catalysts are delineated. The latter water-splitting catalyst captures many of the functional elements of photosynthesis. In doing so, a highly manufacturable and inexpensive method for solar PE storage has been discovered.
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  • Solar Guppy
    Solar Guppy Solar Expert Posts: 1,989 ✭✭✭
    Re: New Storage possibility - halide splitting

    "Of course, compression efficiencies for H2 and the efficiency of the fuel cell must also be factored into the system"

    Translation, PV today is more efficient as fuel cells are at best about 40% and you have to have the ability to store hydrogen which in of itself is a real challenge both at the molecular level ( leaking ) and area ( very light = need lots of compression and liquid cooling )

    Sound like a DOD or DOE grant application to me