China’s COMAC Wants To Build An Electric Passenger Aircraft

[Ich]

The future of air travel isn’t electric its most likely hydrogen. Scientists have already found a way to store and release hydrogen on demand from solids and they are well on their way to make the first solid state hydrogen fuel cell.

It already exists. Its like a PB-batterie. No high pressure ect.

Hocheffiziente Wasserstoffbatterie entwickelt

Eine hocheffiziente Wasserstoffbatterie aus günstigen Materialien kann den Energieträger reversibel speichern.

www.forschung-und-wissen.de

 

[antonius123]

You need 480 watt-hour per kilogram for a small regional aircraft. The energy density of sodium nickel chloride is 120 WH/kg.

You must show physics law that prevent possibility of battery from any material/with any technology to narrow the gap with kerosene in term of energy density, if you say it is impossible for human technology to reach such a battery in the future. Can you?

 

[dbc]

You must show physics law that prevent possibility of battery from any material/with any technology to narrow the gap with kerosene in term of energy density, if you say it is impossible for human technology to reach such a battery in the future. Can you?

I’m not going to waste my time feeding your fantasies. You are the one to claim electric engines will replace kerosene powered engines for mass air transport so the onus is on YOU to prove it.

 

[antonius123]

I’m not going to waste my time feeding your fantasies. You are the one to claim electric engines will replace kerosene powered engines for mass air transport so the onus is on YOU to prove it.

No I didn't. You that started to say "china physics" which mean it is impossible (according to real physical law) for plane to use battery as source of energy in the future.

 

[dbc]

No I didn't. You that started to say "china physics" which mean it is impossible (according to real physical law) for plane to use battery as source of energy in the future.

The theoretical maximum energy density of the most electro-positive elements in the periodic table (Potassium, Sodium, Lithium e.t.c.)hits a limit of 50% percent. Even if the science advances to hit that theoretical limit it still can’t compete with Gasoline on efficiency. Science cannot overcome the limits imposed by nature.

 

[antonius123]

The theoretical maximum energy density of the most electro-positive elements in the periodic table (Potassium, Sodium, Lithium e.t.c.)hits a limit of 50% percent. Even if the science advances to hit that theoretical limit it still can’t compete with Gasoline on efficiency. Science cannot overcome the limits imposed by nature.

The statement you provide is incorrect. Let's break down the points:

1. Theoretical Maximum Energy Density: It is true that the energy density of the most electro-positive elements (like lithium, sodium, and potassium) is limited due to their atomic properties. In batteries, the energy density is determined by the chemical reactions taking place, and there are physical and chemical limitations to the energy storage capacity of these elements.
2. Limit of 50% Percent: This part is a bit unclear. If it refers to the maximum efficiency of converting stored energy to useful work, then it's worth noting that energy efficiency can be expressed as a percentage, but it's not directly related to the theoretical energy density of the elements. The efficiency depends on the specific energy conversion process, and batteries can achieve efficiencies higher than 50%.
3. Can't Compete with Gasoline on Efficiency: This statement is incorrect. Gasoline has a high energy density, which is why it has been a dominant energy source for transportation. However, comparing the efficiency of gasoline engines with electric batteries is not a straightforward task. The efficiency of gasoline engines is typically measured as the percentage of energy converted to useful work from the combustion process, while electric batteries' efficiency is determined by the percentage of stored energy that can be retrieved as electricity. Each technology has its own advantages and limitations.
4. Science Cannot Overcome the Limits Imposed by Nature: This statement is partly true and partly false. While it is true that there are fundamental physical and chemical limitations imposed by nature, science continually works to optimize and improve energy storage technologies. Researchers are exploring new materials, designs, and chemistries to enhance battery performance and increase energy density. While it's essential to acknowledge the limitations, scientific advancements can still lead to substantial improvements in battery technology.

In conclusion, while there are limitations to the energy density of electro-positive elements in batteries, it is incorrect to say that science cannot compete with gasoline on efficiency or that it can't overcome the limits imposed by nature. Scientific research and advancements can lead to significant improvements in energy storage technologies, making electric batteries more competitive with gasoline and other conventional energy sources.

 

[jhungary]

Do you understand physics?

Do you really have to ask this question??

You are talking about @beijingwalker