Carbon in the atmosphere is a major driver of climate change. Now researchers from McGill University have designed a new catalyst for converting carbon dioxide (CO2) into methane – a cleaner source of energy – using tiny bits of copper called nanoclusters. While the traditional method of producing methane from fossil fuels introduces more CO2 into the atmosphere, the new process, electrocatalysis, does not. “On sunny days you can use solar power, or when it’s a windy day you can use that wind to produce renewable electricity, but as soon as you produce that electricity you need to use it,” says Mahdi Salehi, Ph.D. candidate at the Electrocatalysis Lab at McGill University. “But in our case, we can use that renewable but intermittent electricity to store the energy in chemicals like methane.”
By using copper nanoclusters, says Salehi, carbon dioxide from the atmosphere can be transformed into methane and once the methane is used, any carbon dioxide released can be captured and “recycled” back into methane. This would create a closed “carbon loop” that does not emit new carbon dioxide into the atmosphere. The research, published recently in the journal Applied Catalysis B: Environment and Energy, was enabled by the Canadian Light Source (CLS) at the University of Saskatchewan (USask). The team plans to continue refining their catalyst to make it more efficient and investigate its large-scale, industrial applications. Their hope is that their findings will open new avenues for producing clean, sustainable energy.
Making more methane seems like a risky option, given its role in climate change.
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This could be useful for making synthetic aviation fuel at scale. Need methane + hydrogen + lot of energy.
Copper is abundant compared to the other rare earth catalysts, thus reducing cost.
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Batteries may be more efficient, but we can’t use them to store all the energy we need. And heat pumps still need electricity when there is less renewable electricity available.
Looking at nature, long carbon chains are the way to store lots of energy and being able to use just electricity to get carbon out of the air is a great first step. Capturing the methane will allow us to process it further.
This is the best news regarding energy storage I’ve seen in a long time.
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If you have excess oil you build a really cheap metal container to put it in. If you have extra energy to go into the battery to need to spend the full amount to make a new battery to store it.
It’s fixed cost vs marginal cost. Marginal cost of oil storage is pretty low
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That’s correct. Electro-chemical storage is not limited by the Carnot efficiency limit like combustion engines are. Conversion losses should be a huge factor in choosing energy storage.
The fertilizer that’s propping up our unsustainable factory farming is created using the Faber process that turns methane and nitrogen into ammonia. Food prices are lower because methane is cheap as a byproduct of oil refining. It might be cool to instead take carbon out of the atmosphere and then convert it into fertilizer to grow plants that remove even more carbon from the air.
You said it yourself. Still undiscovered. The technology we have today can’t be used to save more than a day or so of electricity. We need to handle months. Finding more energy dense ways of doing it is crucial.
And even if we burn it and put it back in the air, it is still positive, because we won’t have added more from oil. And if we get enough of the stuff we can let the trees grow, which would be a carbon sink.
Step 1: stop using oil. If we use the methane as is, we’ve accomplished this step.
Step 2: scrub carbon from atmosphere. Upping the game and replacing wood for heating would let the trees scrub the atmosphere, creating carbon sinks
Step 3: accelerate. Can processed methsne be stored in energy dense compounds? Like oil was?
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Oh, you are aussie:) i should have guessed by your username.
Ok, for starters, where I live that big yellow thing stops shining. Practically (for electricity production anyways) for almost 6 months of the year and almost totally for 3. And even with heat pumps we still use several MWh of electricity every year to heat our homes. A battery park can keep a city running for 1h. Even those planned in NSW (BESS is it?) would struggle to keep things running for mire than a day. To be clear:
We need more energy storage than can be provided by electric batteries, than can be bought at battery prices and in scales larger than can be produced with any technology current or in the overseeable future. And we needed it yesterday. Any form of low cost, stable, easy to store solution we can use is a huge step forward. Solar is great! But we need the electricity when the sun doesn’t shine. Heat pumps are awesome! But their awesomness is needed when the sun doesn’t shine so much. That is why we need more energy storage solutions.
Summertime there are almost limitless electricity available, but that energy needs to be stored somehow. And with limitless (in practice) efficiency isn’t an issue. Even storing 1% is better than 0%. Regardless of efficiency.
