New Energy Storage Systems Eat Carbon Dioxide For Breakfast, Lunch, & Dinner

All-day energy storage is the avenue through which more wind and solar power will stroll, but getting there has been a tough row to hoe. Lithium-ion battery backs only last a few hours. The only long duration option in widespread use today is pumped hydropower, which is geographically limited. On the plus side, new technologies are beginning to emerge, and some of them have the added benefit of deploying carbon dioxide to store clean kilowatts from wind and solar resources.

On the bright side, the ORNL research team has found that pulsing the charge/discharge cycle can help prevent film from accumulating, so that’s area of further improvement. The team will also concentrate its next steps on focus on developing a “very fine, dense, mechanically stable ceramic membrane,” to separate the battery chambers.

That’s not the only cherry on top. The new Al-CO2 battery can also store electricity for 10 hours or more, meeting the Energy Department’s definition of long duration energy storage. The lab anticipates that the pharmaceutical and cement industries are two leading markets for battery-generated carbon products. They also note that the batteries produce oxygen and hydrogen, both of which can be captured for re-use.

Whether or not an energy storage system is involved, carbon-capturing technology is also being deployed to provide a more sustainable source for the graphite used in lithium-ion batteries.and converting it into graphite. Aside from sustainability, the aim is to release the EU supply chain from dependence on graphite from China.

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