The engine, about the size of a ten-cent coin, starts with a combustion chamber(燃烧室)that burns hydrogen(氢). Its tiny parts are etched onto silicon wafers(硅片) in the same manner that computer parts are imprinted onto integrated circuits(集成电路). The first engine is made up of five...
hydrogen is a potential energy and it is eco-friendly.On the basis of the above discussion, I would concede that increasing the price of petrol is not the best solution to solve the troubles about traffic and pollutions. More importantly, I firmly believe strengthen people’s cognition of ...
electricity have become available at grid(输电网)scale; rather than storing excess electricity in arrays of batteries, the extra electricity can be used to drive the electrolysis of water, “storing” the electricity in the form of hydrogen. Second, electrolyzers are getting more efficient. ...
根据划线词上文“More than 90% of transport fuel is petrol based, but if more vehicles used hydrogen(超过90%的交通燃料是以汽油为基础的,但如果更多的车辆使用氢)”可知,如果使用氢气的话温室气体排放量会“下降”。由此可知,划线词的意思是“下降”。故选B项。2.主旨大意题。根据第三段中的“However, ...
And probably not here, either – we’ve already gone over how hydrogen is less efficient than battery power, how the infrastructure isn’t there for hydrogen but we already have an electricity grid, and every other argument that just seems to invite... well, more arguments. Unless hydrogen ...
Since electric cars don’t need catalytic converters, one of the key components of vehicles that require platinum, there’s a continuous drop in demand. That said, this plunge may be countered with other sources of demand, like platinum to produce fuel cells. Hydrogen-fuelled vehicles need plat...
businesses outside core oil and gas (Convenience and EV Charging, Hydrogen) and more broadly on investment hurdles; and (vi) strengthen the Board of Directors, adding the necessary capabilities to oversee large capital deployment in areas which are not BP's core business and have BlackRoc...
Fuel cell cars (燃料电池车):Fuel cell cars use hydrogen and oxygen to make power. The only exhaust they produce is clean water. But fuel cell cars are still much too expensive to make. Solar cars: This kind of car has large panels on the top that take power from the sunshine. The ...
The hydrogen fuel cell on the other hand, is more like an energy converter than the energy storage device of a battery. The chemical reaction of a fuel cell converts the hydrogen fuel and oxygen into electricity producing water as a by-product. Then a fuel cell will continue to provide po...
theHydrogen Championrecommended blending up to 20% hydrogen into the gas grid, similar to how most petrol now has 10% ethanol blended in. This is listed in the report under the heading "Stimulate Demand" and it seems clear the aim is to encourage hydrogen production rather than reducecarbon ...