Chemistry SL
Chemistry SL
6
Chapters
243
Notes
Chapter 1 - Models Of The Particulate Nature Of Matter
Chapter 1 - Models Of The Particulate Nature Of Matter
Chapter 2 - Models Of Bonding & Structure
Chapter 2 - Models Of Bonding & Structure
Chapter 3 - Classification Of Matter
Chapter 3 - Classification Of Matter
Chapter 4 - What Drives Chemical Reactions?
Chapter 4 - What Drives Chemical Reactions?
Chapter 5 - How Much, How Fast & How Far?
Chapter 5 - How Much, How Fast & How Far?
Chapter 6 - What Are The Mechanisms Of Chemical Change?
Chapter 6 - What Are The Mechanisms Of Chemical Change?
IB Resources
Chapter 4 - What Drives Chemical Reactions?
Chemistry SL
Chemistry SL

Chapter 4 - What Drives Chemical Reactions?

Direct-Methanol Fuel Cells: High Energy Density & Environmental Impact

Word Count Emoji
557 words
Reading Time Emoji
3 mins read
Updated at Emoji
Last edited on 5th Nov 2024

Table of content

🎉 Fun Introduction: Imagine having a pocket-sized power source more efficient than your phone's battery! That's the promise of Direct-methanol fuel cells.

Direct-methanol Fuel Cell (DMFC)

  • Uses methanol (a liquid fuel) as a source of hydrogen ions (H+) instead of hydrogen gas.
  • Advantage: Methanol can be made from renewable resources (think: fermentation, like brewing beer! 🍺).
  • Green Bonus: Producing methanol is cleaner for the planet - fewer greenhouse gases compared to hydrogen production.

💡 Real-world example: Think of methanol as a "greener" fuel, like opting for a reusable straw over a plastic one.

Energy Density Fun-fact

  • Energy density = Energy per unit volume.
  • Methanol has a much greater energy density than hydrogen gas.
  • This means you get more bang for your buck with methanol. 💥

💡 Real-world example: Imagine a tiny battery powering an entire city! That's energy density for you.

The Science Behind DMFCs

Anode Reaction
CH3OH(aq) + H2O(l) → CO2(g) + 6H⁺(aq) + 6e⁻

Cathode Reaction
1.5 O2(g) + 6H⁺(aq) + 6e⁻ → 3H2O(l)

Overall Reaction
CH3OH(aq) + 1.5 O2(g) → CO2(g) + 2H2O(l)

💡 Did you know? The reaction produces carbon dioxide, which is the same gas we exhale when we breathe!

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IB Resources
Chapter 4 - What Drives Chemical Reactions?
Chemistry SL
Chemistry SL

Chapter 4 - What Drives Chemical Reactions?

Direct-Methanol Fuel Cells: High Energy Density & Environmental Impact

Word Count Emoji
557 words
Reading Time Emoji
3 mins read
Updated at Emoji
Last edited on 5th Nov 2024

Table of content

🎉 Fun Introduction: Imagine having a pocket-sized power source more efficient than your phone's battery! That's the promise of Direct-methanol fuel cells.

Direct-methanol Fuel Cell (DMFC)

  • Uses methanol (a liquid fuel) as a source of hydrogen ions (H+) instead of hydrogen gas.
  • Advantage: Methanol can be made from renewable resources (think: fermentation, like brewing beer! 🍺).
  • Green Bonus: Producing methanol is cleaner for the planet - fewer greenhouse gases compared to hydrogen production.

💡 Real-world example: Think of methanol as a "greener" fuel, like opting for a reusable straw over a plastic one.

Energy Density Fun-fact

  • Energy density = Energy per unit volume.
  • Methanol has a much greater energy density than hydrogen gas.
  • This means you get more bang for your buck with methanol. 💥

💡 Real-world example: Imagine a tiny battery powering an entire city! That's energy density for you.

The Science Behind DMFCs

Anode Reaction
CH3OH(aq) + H2O(l) → CO2(g) + 6H⁺(aq) + 6e⁻

Cathode Reaction
1.5 O2(g) + 6H⁺(aq) + 6e⁻ → 3H2O(l)

Overall Reaction
CH3OH(aq) + 1.5 O2(g) → CO2(g) + 2H2O(l)

💡 Did you know? The reaction produces carbon dioxide, which is the same gas we exhale when we breathe!

Unlock the Full Content! File Is Locked Emoji

Dive deeper and gain exclusive access to premium files of Chemistry SL. Subscribe now and get closer to that 45 🌟

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