New Zinc Battery Runs 7 Months NON-STOP — This Changes Grid Storage Forever

[00:00:00]Imagine a battery that ran continuously for 5,128 hours. 5,128 hours.

[00:00:09]That's more than 7 months of non-stop operation. That's exactly what Chinese researchers have just demonstrated, and it could change how we store solar and wind energy at grid scale.

[00:00:21]Today, I want to talk you through what they've built and why it matters, and what it means for the renewable energy transition. Researchers at Fudan University and the Chinese Academy of Sciences have developed what's called a flowing zinc slurry battery.

[00:00:38]Flowing zinc slurry battery.

[00:00:41]The results were just published in the journal Nature Energy.

[00:00:45]Now, flow batteries are not new. They typically work by pumping liquid electrolytes through an electro- electrochemical cell, but zinc-based flow batteries have always had a problem. The fixed zinc electrode degrades over time.

[00:01:02]Zinc particles clump together, reactions become unstable, and then the interface breaks down.

[00:01:10]The team threw out the fixed electrode entirely.

[00:01:15]Instead, they turned zinc itself into a flowable energy carrier. A slurry of zinc nanoparticles suspended in a conductive liquid that continuously circulates between a storage tank and the battery cell, while the zinc reversibly switches between its metallic and ionic forms.

[00:01:34]The senior author, Fei Wang, said the idea came from visiting a zinc electrowinning plant, watching the industrial process where zinc ions are converted into metallic zinc, and realizing that same electron gaining process could be used directly for energy storage. The design combines nanoscale zinc particles with a hollow carbon framework and a ligand controlled electrolyte, which together stop the particles from clumping and keep the reaction stable through repeated charging and discharging.

[00:02:09]And the numbers are actually genuinely impressive.

[00:02:13]In laboratory testing, the system achieved an efficiency of 99.94%.

[00:02:19]Zinc manganese dioxide batteries built on the same architecture retained 81.1% of their original capacity after 5 and 1/2 thousand charge discharge cycles.

[00:02:32]That's better than lithium ion phosphate.

[00:02:34]I mean, that's 5 and 1/2 thousand cycles. The latest lithium ion phosphate batteries are rated to achieve 80% of their original capacity after around 4,000 cycles.

[00:02:45]And And as I said earlier, the system ran continuously for 5,128 hours.

[00:02:52]That's a lot of time to run a battery continuously.

[00:02:56]Here's why this matters so much for renewables. On the Electric Viking website, I'll put a link in the description below. We have more articles about electric cars and battery technology than any other website that I'm aware of in the world. So, check that out. Link is in the description.

[00:03:14]And there you'll find our videos and analysis and articles about everything going on in the EV world.

[00:03:20]The flowing architecture separates energy storage capacity from power delivery.

[00:03:25]Want more storage? You simply increase the volume of slurry in the external tanks.

[00:03:31]No need to redesign the electrochemical cell itself.

[00:03:35]That's exactly the kind of scalability you want for long-term duration storage, soaking up excess solar and wind generation during the day, and then, of course, releasing it when the sun goes down or the wind drops.

[00:03:48]Zinc is actually very cheap. It's abundant and it's safe. There is no thermal runaway risk and no exotic materials in these batteries at all.

[00:03:59]Now, the caveats. This is a laboratory scale demonstration. The team says their next step is translating the concept toward practical long duration storage systems, optimizing the slurry chemistry, improving system integration, and even exploring whether other metals would work as flowable energy carriers beyond zinc.

[00:04:18]These batteries won't go into EVs. This is for energy storage.

[00:04:22]Here's my take. The grid storage race is not just lithium versus sodium or lithium ion phosphate versus sodium.

[00:04:30]Long duration storage is the missing piece that makes 100% renewable grids possible.

[00:04:36]And a zinc slurry that runs for 7 months straight with near perfect efficiency is a pretty serious contender. Let's be real.

[00:04:45]If this scales, the economics of overnight and multi-day storage change completely. Will it scale? It actually really could. Iron flow batteries, vanadium batteries, they're actually quite similar to this and they're already being built all around the world. In fact, I just did a video a few days ago on the largest one in Australia that's going to start work apparently next year. Let me know in the comments. Do you think flow batteries will beat lithium for grid storage? I know some people do, some people don't.

[00:05:16]Let me know what your thoughts are.

[00:05:18]And I'll see you in the next video.

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