Aluminium forms a thin coating of passive aluminium oxyde when oxydizing, so I'd... | Hacker News

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		littlestymaar on July 9, 2023 \| parent \| context \| favorite \| on: Algae powers computer for a year using only light ... Aluminium forms a thin coating of passive aluminium oxyde when oxydizing, so I'd be surprised if it could have lasted for a year this way. Also, that wouldn't explain why it continues to produce power after light goes dark.

HPsquared on July 9, 2023 [–]

Passive layer depends on the chemistry. Power production after dark would be residual oxygen.

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