Hydrogen–oxygen fuel cells · 氢-氧燃料电池
| English | 中文 | Pinyin · 拼音 |
|---|---|---|
| fuel cell/ˈfjuːəl sel/ | 燃料电池 | rán liào diàn chí |
Power from hydrogen
- Imagine a battery whose only waste is water. That's a hydrogen–oxygen fuel cell 燃料电池.
- It turns chemical energy straight into electricity.
来自氢的动力
- 想象一个唯一废物是水的电池。那是一个氢-氧燃料电池(hydrogen–oxygen fuel cell)。
- 它把化学能直接变成电。
The only product of a hydrogen–oxygen fuel cell is: · 一个氢-氧燃料电池唯一的产物是:
Hydrogen + oxygen → water. · 氢 + 氧 → 水。
How it works
- Hydrogen and oxygen are supplied to a fuel cell.
- They react in a controlled way that produces electricity, with water as the only product.
A hydrogen-oxygen fuel cell makes electricity, with water as the only product
它如何起作用
- 氢和氧被供给一个燃料电池。
- 它们以一种受控的方式反应,产生电,以水作为唯一的产物。
一个氢-氧燃料电池制造电,以水作为唯一的产物
Inside a hydrogen–oxygen fuel cell · 一个氢-氧燃料电池内部
Step through a fuel cell. Hydrogen and oxygen combine to make water, and the energy of that reaction is released as electricity — with no carbon dioxide. · 逐步看一个燃料电池。氢和氧结合制造水,而那个反应的能量作为电被释放——没有二氧化碳。
A fuel cell releases the energy of the reaction as: · 一个燃料电池把反应的能量作为以下释放:
It produces electricity directly. · 它直接产生电。
The overall reaction in the cell is hydrogen + oxygen → ______. · 电池中的总反应是氢 + 氧 → ______。
Water is the only product. · 水是唯一的产物。
The overall reaction
- The overall reaction is hydrogen + oxygen → water (the same as burning hydrogen).
- But instead of a flame, the energy is released as electrical energy.
Metals and hydrogen form at the cathode; non-metals at the anode
总反应
- 总反应是氢 + 氧 → 水(与燃烧氢相同)。
- 但不是一个火焰,能量作为电能被释放。
A key advantage of fuel cells over petrol engines is that they: · 燃料电池相对于汽油发动机的一个关键优势是它们:
The fuel cell itself emits only water. · 燃料电池本身只排放水。
A drawback of fuel cells is that hydrogen is difficult to store and transport. · 燃料电池的一个弊端是氢难以储存和运输。
Hydrogen storage is a major challenge. · 氢的储存是一个重大挑战。
Advantages and drawbacks
- Advantages: only product is water (no CO₂), efficient, quiet.
- Drawbacks: hydrogen is hard to store and transport, and is often made using fossil fuels.
"Clean" depends on how the hydrogen is made. The fuel cell itself only makes water, but if the hydrogen comes from fossil fuels, the pollution just moves elsewhere. Truly clean needs renewable hydrogen.
优点和弊端
- 优点:唯一的产物是水(没有 CO₂)、高效、安静。
- 弊端:氢难以储存和运输,且常常用化石燃料制造。
"清洁"取决于氢如何被制造。 燃料电池本身只制造水,但如果氢来自化石燃料,污染只是移到别处。真正清洁需要可再生的氢。
You've got it
- a hydrogen–oxygen fuel cell makes electricity from hydrogen and oxygen
- the overall reaction is hydrogen + oxygen → water — water is the only product
- pros: no CO₂, efficient; cons: hydrogen is hard to store and often fossil-derived
你掌握了
- 一个氢-氧燃料电池从氢和氧制造电
- 总反应是氢 + 氧 → 水——水是唯一的产物
- 优点:没有 CO₂、高效;缺点:氢难以储存且常常源自化石