This week we’re back in the swing of things. Not everyone posted updates so please try to remember to record your progress every week on google drive. It’ll help us all stay connected and get better results by the end of the year.
First update is from Oakwood School. They debriefed on the CCI Solar Annual Meeting and decided that they will continue to test plates (though still working on the parameters for that research), so they started by making an iron nitrate plate at the last meeting. They will also focus on writing up a report on how to build and use their UV Ozone cleaner. That way all the other teams will be able to follow the plans to build their own device and achieve more uniform spotting. If you’re interested in learning more about the UV ozone cleaner, reach out to Oakwood in the comments section and let them know any questions you have that they should address in their report.
Poly reviewed what they learned at the Annual Meeting as well. They had a discussion about the Juice from Juice project, and then retrieved new batteries to improve the UV light conditions for their HARPOON testing. They then did calculations to prepare a solution of a HARPOON standard (Ni/Fe/Co) used by all the other HARPOON sites, and cleaned plates for next time.
San Marino had a conversation on the Annual Meeting too and decided that they want to try using a UV ozone cleaner too if possible. They also saw materials that other groups are working with and are willing to potentially revisit bismuth (despite previous experiences with the material flaking) and cobalt. They particularly were impressed with a result shown of CoZn that was in the red with very high current.
At Mayfield, team PEAK contacted Mike McDonald (MIT) who spoke at the conference about his experience studying variation in SEAL results and received an excel file where they can input various current values for the same material and determine the standard deviation of the current. They also tested a CoZnFe plate and found another promising material (similar to their one CoZn material). They plan to epoxy a new wire to the opposite side of the plate to verify that the material being close to the bias potential didn’t affect the result.
Team RAM made two new plates: plate 11 contains Bismuth, Vanadium, and Tungsten (with the ratio of 8:1:1, 8:1:5, and 8:1:8), and plate 12 contains Bismuth, Vanadium, and Nickel, with the same ratio of plate 11. They used ammonium metavanadate for these plates that wasn’t very soluble so the ratios will likely be off. Hopefully next week the sodium metavanadate will be available to remake the materials and compare efficacy. Team SEA continued making plates with their colored and non-colored salts in more ratios (1:8, 4:7, 5:8).