Solar Batteries Performance Enhancing Vitamins
Author: Source: Datetime: 2016-10-10 17:31:12
Flow batteries function much like lead-acid batteries, with a fluid that reacts with electrodes to store charge. However, the liquid is cycled through an external tank in the charge/discharge cycle.
The external “refresh” of a flow battery's fluid means it can handle very deep discharges, while lead acid batteries have to be kept above 50 per cent charge. For a static application like storage from solar power, that makes flow batteries an attractive third alternative to both lead acid and lithium-ion battery pack.
Harvard's research is on improving the electrolyte, so the external tanks can store more energy per unit of volume, and that's where the vitamin B2 molecule comes in.
The university had previously worked on naturally-occurring quinones in the electrolyte; B2 is similar, they say, but uses nitrogen as the electron carrier. The important molecule in B2 is alloxazine, which forms the backbone of how the vitamin stores energy in human bodies. Portable solar power generator is a good device to storage energy.
The solution the researchers produced achieved “open-circuit voltage approaching 1.2 V and current efficiency and capacity retention exceeding 99.7% and 99.98% per cycle”, they write in their paper at Nature Energy.
Since the vitamin is already produced at an industrial scale, the researchers reckon the electrolyte can similarly be manufactured at large scale, and at very low cost.
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