I'm developing a compact, water-activated metal fuel cell (MFC), and here is how my very first test went.

​Core Components: A custom 300 mL 3D-printed modular reaction chamber using magnesium alloy anodes and air cathodes.

​Test Conditions: Tested under a 0.5W constant power (CP) load using a 3.5% saline solution.

​Test Results: As shown in the discharge curve, the cell successfully self-activated. Over the initial 1-hour run, the voltage steadily climbed from 0.844V to over 1.03V while maintaining a stable 0.5W output.

​(Image 1: The LGOOO Power Core module connected to the load tester; Image 2: Close-up of the active load screen showing real-time specs; Image 3: The 1-hour constant-power discharge curve.)

​I'm currently optimizing the electrode spacing and venting structure to hit my 1W output target. Let's discuss and share ideas!