[novrain @ Aug 6th 2008 8:05AM]

坦白说我看不出所谓的革命性所在，这无非就是一个“太阳能电池”+“电解水装置”+“燃料电池”，所有的这些都是已经存在的技术，我开始还以为可以直接在催化剂作用下光解水，仔细看才知道依然要有“solar cell”这么一步，whose效率最高不过40.7%。
然后我去看Engadget英文版，发现下面Highest Ranked是这样一条：
ds @ Aug 1st 2008 10:57AM

Wow.. Engadget you got this story all wrong. The discovery has nothing to do with solar panels and hydrogen fuel cells. The discovery is of a new cheap catalyst that makes electrolysis cheaper, yet still very efficient. They are using a catalyst that cost hundreds to thousands of times less than platinum for one of the electrodes. This is the step that is taking the process from very specialized expensive industrial applications to putting one in your basement. Yes, anyone with a 9v battery can get some H gas from water; but catalysts make the process work well enough to actually be useful on large scales.

所以，关键是，有个好的电解水催化剂了，就这么简单，和太阳能啊、燃料电池啊没什么关系~