We Finally Found a Green Use for Coal

TL;DR

Scientists are exploring the use of coal to create hydrogen batteries, providing a potential solution to the challenge of storing hydrogen as a clean energy source.

Transcript

It’s going to take some pretty big innovations to address this climate crisis we’ve created for ourselves. Among them, hydrogen could be the answer to a lot of the problems faced by the transportation, manufacturing, and electricity generation industries. Hydrogen has been held back by a few problems of its own, though. If you want to learn about t... Read More

Key Insights

• 🪡 Hydrogen is a promising clean energy source, but its storage challenges need to be overcome for widespread adoption.
• 😘 Storing hydrogen in large amounts is difficult due to its low boiling point and propensity to damage container walls.
• 🧑‍🔬 Scientists propose using coal beds as hydrogen batteries, taking advantage of coal's adsorption capabilities.
• 🧑‍🏭 Different coal types and factors like diffusion potential and adsorption capability affect the efficiency of coalbed hydrogen batteries.
• 👨‍🔬 Research is ongoing to determine the feasibility of coalbed-based hydrogen storage systems in real-world applications.
• 💦 Further work is needed to develop methods for extracting hydrogen from coal beds efficiently.
• ⛽ The existing infrastructure from the fossil fuel industry could potentially be repurposed for coalbed hydrogen storage.

Questions & Answers

Q: Why is hydrogen seen as a promising alternative to fossil fuels?

Hydrogen, when burned, only produces water as a waste product, making it a clean energy source. Finding a way to efficiently produce hydrogen is crucial to replace current fuels.

Q: Why is storing hydrogen challenging?

Hydrogen has a low boiling point and is highly diffusive, making it difficult to contain. The high pressure required for storage causes hydrogen molecules to damage container walls.

Q: How do researchers propose using coal as a solution?

Scientists suggest pumping hydrogen into coal beds, utilizing coal's adsorption capabilities. Coal's porous structure and ability to retain gas make it a potentially effective medium for hydrogen storage.

Q: Do all coal types work equally well for hydrogen storage?

No, the effectiveness of coalbed hydrogen batteries depends on factors like coal type, diffusion potential, and adsorption capability. Higher rank coals like anthracite have better adsorption potential, while lower rank coals like sub-bituminous are better at storing hydrogen.

Summary & Key Takeaways

• Hydrogen could be an alternative to fossil fuels, but its storage is challenging due to its low boiling point and ability to diffuse into container walls.

• Researchers propose using coal beds as hydrogen batteries, utilizing coal's ability to adsorb and store gas, similar to the concept of storing excess carbon dioxide underground.

• Different factors, such as coal type, diffusion potential, and absorption capability, affect the efficiency of coalbed hydrogen batteries.