增加石墨烯可储存的电荷量
文章来源:未知 文章作者:enread 发布时间:2015-04-23 06:51 字体: [ ]  进入论坛
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Engineers at the University of California, San Diego have discovered a method to increase the amount of electric charge that can be stored in graphene, a two-dimensional form of carbon. The research, published recently online in the journal1 Nano Letters, may provide a better understanding of how to improve the energy storage ability of capacitors for potential applications in cars, wind turbines2, and solar power. Capacitors charge and discharge3 very fast, and are more useful for quick large bursts of energy, such as in camera flashes and power plants. Their ability to rapidly charge and discharge is an advantage over the long charge time of batteries. However, the problem with capacitors is that they store less energy than batteries.
 
How can the energy storage of a capacitor be improved? One approach by researchers in the lab of mechanical4 engineering5 professor Prabhakar Bandaru at the Jacobs School of Engineering at UC San Diego was to introduce more charge into a capacitor electrode using graphene as a model material for their tests. The principle is that increased charge leads to increased capacitance, which translates to increased energy storage.


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1 journal g3Ex2     
n.日志,日记;议事录;日记帐;杂志,定期刊物
参考例句:
  • He kept a journal during his visit to Japan.他在访问日本期间坚持记日记。
  • He got a job as editor of a trade journal.他找到了一份当商业杂志编辑的工作。
2 turbines c5cbfae2d80cf3df655e741bb24ad7c2     
涡轮机( turbine的名词复数 )
参考例句:
  • These turbines can be broadly split into two basic types, the impulse and the reaction turbines. 这些汽轮机可大致分为两种基本类型,即冲动式和反动式。
  • The steam is carried through pipes to steam turbines which drive the electric generators. 蒸汽经过输送管进入汽轮机,汽轮机再带动发电机。
3 discharge QuKxG     
vt.释放;排出;vi.排出,放电;n.释放;排出
参考例句:
  • The water pipes discharge freely.水管畅流。
  • Some factories in this locality still discharge waste water into the river.这一地区有些工厂仍把废水排入河中。
4 mechanical YCDxt     
adj.机械(学)的;力学的;机械似的;手工操作的
参考例句:
  • He borrowed a mechanical book from me.他从我这儿借了一本力学方面的书。
  • He looks very mechanical.他看上去非常呆板。
5 engineering vtyzmS     
n.工程,工程学,管理,操纵
参考例句:
  • The science of engineering began as soon as man learned to use tools. 人类一学会使用工具,工程科学就开始了。
  • It was the first great engineering works in the world. 这是世界上第一家大型的工程工厂。
TAG标签: electric charge graphene
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