充电几秒钟通话一星期 美大学研发超级电容电池

 　　Scientists from the University of Central Florida (UCF) have created a supercapacitor battery prototype that works like new even after being recharged 30,000 times.

　　来自中佛罗里达大学（UCF）的科学家已经创造了一个超级电容电池的原型，即使充电3万次后仍然能够工作。

　　The research could yield high-capacity, ultra-fast-charging batteries that last over 20 times longer than a conventional lithium-ion cell.

　　这项研究可以得到高容量、秒充的电池，是传统的锂离子电池续航时间的20多倍。

　　"You could charge your mobile phone in a few seconds and you wouldn't need to charge it again for over a week," says UCF researcher Nitin Choudhary.

　　UCF的研究员尼廷·乔杜里表示：“你只要为你的手机充几秒钟的电，那么在接下来的一个多星期之内就不需要再次充电了。”

　　充电几秒钟通话一星期 美大学研发超级电容电池

　　Supercapacitors can be charged quickly because they store electricity on the surface of a material, rather than using chemical reactions. That requires "two-dimensional" material sheets that can hold lots of electrons.

　　超级电容可以快速充电，因为它们将电存储在材料的表面上，而不是使用化学反应。这需要可以保存大量电子的“二维”材料片。

　　However, much of the research, including that by Henrik Fisker and UCLA, uses graphene as the two-dimensional material.

　　然而，很多研究，包括亨利克·菲克斯和UCLA的研究，都是使用石墨烯作为二维材料。

　　Yeonwoong Eric Jung from UCF says it's a challenge to integrate graphene with other materials used in supercapacitors, though.

　　来自UCF的Yeonwoong Eric Jung说，将石墨烯与超级电容器中使用的其他材料集成是一个挑战。

　　That's why his team wrapped 2D metal materials (TMDs) just a few atoms thick around highly-conductive 1D nanowires, letting electrons pass quickly from the core to the shell. That yielded a fast charging material with high energy and power density¹ that's relatively² simple to produce.

　　这就是为什么他的团队在高度导电的1D纳米线周围包裹了几个原子厚度的2D金属材料（TMDs），使电子快速从核心传递到壳层。这产生了具有高能量和功率密度的快速充电材料，其制造相对简单。

　　"We developed a simple chemical synthesis approach so we can very nicely integrate the existing materials with the two-dimensional materials," Jung says.

　　Jung说道：“我们开发了一种简单的化学合成方法，因此我们可以很好地融合现有材料与二维材料。”

　　The research is in early days and not ready for commercialization, but it looks promising³.

　　这项研究还处于早期阶段，并没有商业化的准备，但它看起来很有前途。

　　"For small electronic devices, our materials are surpassing the conventional ones worldwide in terms of energy density, power density and cyclic stability," Choudhary said.

　　“对于小型的电子设备，我们的材料在能量密度、功率密度和循环稳定性方面超越了世界范围内的常规产品。”乔杜里说道。

1 density   

n.密集，密度，浓度

参考例句：

• The population density of that country is 685 per square mile.那个国家的人口密度为每平方英里685人。
• The region has a very high population density.该地区的人口密度很高。

2 relatively   

adv.比较...地，相对地

参考例句：

• The rabbit is a relatively recent introduction in Australia.兔子是相对较新引入澳大利亚的物种。
• The operation was relatively painless.手术相对来说不痛。

3 promising   

adj.有希望的，有前途的

参考例句：

• The results of the experiments are very promising.实验的结果充满了希望。
• We're trying to bring along one or two promising young swimmers.我们正设法培养出一两名有前途的年轻游泳选手。