A New Kind of Cement Could Turn Homes and Roads Into Giant Batteries


Imagine your house not just standing strong but also powering your entire home. Sounds futuristic, right?

Well, thanks to some clever folks at MIT, this could soon be a reality. By blending water, cement, and a bit of a common substance called carbon black, they’ve created something remarkable—a supercapacitor.

Essentially, a giant, concrete battery.

Why Is This a Big Deal?

Concrete is everywhere. We use it so much that its production alone is responsible for 8% of global CO2 emissions—more than four billion tonnes a year!

But this new material could turn that environmental villain into a hero.

Concrete’s carbon footprint is colossal because making cement involves heating limestone to high temperatures, releasing vast amounts of CO2.

If this process could simultaneously yield a material that stores energy, we’d be turning a double negative into a significant positive.

The Magic Mix

So, what’s in this super cement? It’s a blend of three simple ingredients:

  1. Water
  2. Cement
  3. Carbon black (a sooty, ancient material that’s been around since the days of the Dead Sea Scrolls)

This combo creates a conductive nanocomposite.

In plain English, the carbon black forms a network of tiny wires throughout the cement as it sets, making it both strong and capable of storing electricity.

Carbon black’s history is fascinating. It was used as ink in ancient manuscripts and even in the Dead Sea Scrolls.

Now, it’s finding a new life in cutting-edge technology, proving that sometimes, old materials can find new purposes in modern innovations.

What Makes It Special?

Carbon black is highly conductive and repels water. This unique property helps form those tiny networks inside the cement, turning it into a supercapacitor.

Unlike traditional batteries that degrade over time, supercapacitors can release energy quickly and efficiently, which makes them perfect for specific tasks.

These properties mean the supercapacitor cement can handle many charge and discharge cycles without losing capacity.

Traditional lithium-ion batteries degrade with use, but supercapacitors can last much longer, making them ideal for applications where durability is crucial.

Practical Uses

The potential uses are mind-blowing. Here are a few:

  1. Paving Roads: Imagine highways that can charge your electric car as you drive. This new material could make that happen. Roads made from this supercement could store solar energy and wirelessly charge cars, giving them a quick boost on the go.
  2. Building Materials: Think about houses with foundations that can store a day’s worth of energy from solar panels or wind turbines. A single block of this new material (about the size of 55 Olympic swimming pools) could power an average US home for a day.

These applications could transform urban infrastructure.

Roads that double as power sources and buildings that can store their energy needs would reduce our reliance on external power grids and fossil fuels.

The Road Ahead

Scaling this technology could revolutionize energy storage.

With cement being so widely used, integrating this new material could make renewable energy storage more efficient and practical.

It’s a new way of looking at concrete and its potential in our sustainable future.

The challenge lies in mass production and integration. Current construction methods would need to adapt, and industries would have to invest in new manufacturing processes. However, the potential benefits make this a worthwhile pursuit.


From environmentally taxing to energy-storing powerhouse, this innovative cement could change the way we think about construction and energy.

Your future home or the road you drive on could soon be part of a giant battery, storing and supplying clean energy effortlessly. Now, that’s what we call a groundbreaking invention!

This development is not just about improving technology but about rethinking our approach to materials and sustainability.

With innovations like these, we can hope for a future where our infrastructure contributes positively to the environment rather than detracting from it.