篇章:太阳能电池板可将二氧化碳转化为甲酸
Research to curb global warming caused by rising levels of atmospheric greenhouse gases, such as carbon dioxide, usually involves three areas: Developing alternative energy sources, capturing and storing greenhouse gases, and repurposing excess greenhouse gases. Drawing on two of these approaches, researchers in the laboratory of Andrew Bocarsly, a Princeton professor of chemistry, collaborated with start-up company Liquid Light Inc. of Monmouth Junction, N.J. to devise an efficient method for harnessing sunlight to convert carbon dioxide into a potential alternative fuel known as formic acid. The study was published June 13 in the Journal of CO2 Utilization. The transformation from carbon dioxide and water to formic acid was powered by a commercial solar panel generously provided by the energy company PSE G that can be found atop electric poles across the state. The process takes place inside an electrochemical cell, which consists of metal plates the size of rectangular lunch-boxes that enclose liquid-carrying channels.
To maximize the efficiency of the system, the amount of power produced by the solar panel must match the amount of power the electrochemical cell can handle, said Bocarsly. This optimization process is called impedance matching. By stacking three electrochemical cells together, the research team was able to reach almost 2 percent energy efficiency, which is twice the efficiency of natural photosynthesis. It is also the best energy efficiency reported to date using a human-made device.
A number of energy companies are interested in storing solar energy as formic acid in fuel cells. Additionally, formate salt -- readily made from formic acid -- is the preferred de-icing agent on airplane runways because it is less corrosive to planes and safer for the environment than chloride salts. With increased availability, formate salts could supplant more harmful salts in widespread use.
Using waste carbon dioxide and easily obtained machined parts, this approach offers a promising route to a renewable fuel, Bocarsly said.
英语学习之易犯的语法错误
英语学习之倒装句之部分倒装
英语学习之不定式、-ING分词和-ED分词三者间的关系
英语学习之简单了解句子结构
四级英语中的否定转移
英语学习之作表语的英语形容词
大学英语四级语法精要(上)
四级考试with用法解析
虚拟语气讲解资料
英语学习之不可数名词量的表示
英语学习之四级考试虚拟语气考点及对策
英语学习之to ones+情感名词 结构的句子
老师谈四级句型的灵活运用
英语学习之掌握四级代名词
“while”的含义及译法
不能用代词Which的几种情况
英语学习之零冠词的用法
英语学习之谓语动词用复数的情况
英语学习之四级英语中的情态动词
英语学习之否定意义副词引起的倒装
英语学习之分词的独立结构精讲
英语学习之没有被动语态的及物动词
英语学习之四级基本介词问答
四级语法中似动词而非动词的边缘介词
英语学习之不定冠词的用法
英语学习之情态动词+现在完成式
四六级七种语法特点介绍
英语学习之数词的用法
英语学习之英语特殊的常用字眼
英语学习之副词要点讲解
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |