The reading passage contends that hydrogen energy has various advantages.
On the other hand, the lecturer brings up several points that contradict this argument.
First, the speaker argues that hydrogen energy brings up costs an enormous amount of money costs. This is because, the way of generating hydrogen energy greatly relies on the electricity which causes a great costs. As a result, the cost of making energy from hydrogen is more huge than these from that of gasoline. This casts doubt on the reading, which states that hydrogen energy is very cost-efficient because water is the most abundant element of the earth.
Second, according to the lecturer, using hydrogen energy is not environmentally-friendly. One significant reason is that a great amount of electricity which is depended bys on hydrogen energy has a negative effect on the nature. This refutes the reading passage's argument that hydrogen energy is beneficial to the environment due to the absence of emission or any by-products.
The final point made in the lecture is that it is not easy to store and transfer hydrogen energy. This is because skills for storage and transportation of hydrogen energy are not complete. What is more, the alloy which is proposed to as a way of transfering hydrogen energy is still too heavy to carry. This rebuffs the reading passage's assertion that hydrogen energy can be stored and transported easily. |