jedder78 Posted December 9, 2018 Posted December 9, 2018 Nice development. Always thought that the constant tapping of rain could be utilised. https://www.theguardian.com/environment/2018/mar/13/rain-or-shine-new-solar-cell-captures-energy-from-raindrops
fiveworlds Posted December 10, 2018 Posted December 10, 2018 Are they for sale? Might be a good investment since it is always raining here.
jedder78 Posted December 10, 2018 Author Posted December 10, 2018 8 hours ago, fiveworlds said: Are they for sale? Might be a good investment since it is always raining here. Not yet. The abstract of their latest study is here: https://www.researchgate.net/publication/323189156_Integrating_Silicon_Solar_Cell_with_Triboelectric_Nanogenerator_via_a_Mutual_Electrode_for_Harvesting_Energy_from_Sunlight_and_Raindrop
swansont Posted December 10, 2018 Posted December 10, 2018 "a peak short-circuit current of ~33.0 nA and a peak open-circuit voltage of ~2.14 V, " Even under the conditions where you might maximize both simultaneously, that's 66 nW. You need 30 million of these to generate an amp, which could then charge up your 2000 mAh AA rechargeable battery in roughly 1 hour, assuming 100% efficiency. Quote Varun said the power the device generates from falling rain needs to be significantly higher to start making an overall difference to a solar panel’s output. “It’s really not clear whether this is a big deal or not – I suspect it’s not.” Bingo! 1
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