木材制作的环保型电池

时间：2013-06-20 06:46:52

（单词翻译:单击）

Taking inspiration from trees, scientists have developed a battery made from a sliver1（梳棉，裂片） of wood coated with tin that shows promise for becoming a tiny, long-lasting, efficient and environmentally friendly energy source. Their report on the device -- 1,000 times thinner than a sheet of paper -- appears in the journal Nano Letters. Liangbing Hu, Teng Li and colleagues point out that today's batteries often use stiff, non-flexible substrates, which are too rigid2 to release the stress that occurs as ions flow through the battery. They knew that wood fibers3 from trees are supple4 and naturally designed to hold mineral-rich water, similar to the electrolyte in batteries. They decided5 to explore use of wood as the base of an experimental sodium6-ion battery. Using sodium rather than lithium would make the device environmentally friendly.

 
Lead author Hongli Zhu and other team members describe lab experiments in which the device performed successfully though 400 charge-discharge cycles, putting it among the longest-lasting of all sodium-ion nanobatteries. Batteries using the new technology would be best suited for large-scale energy storage applications, such as wind farms or solar energy installations, the report indicates.
 
The authors acknowledge support from the National Science Foundation and the University of Maryland NanoCenter.

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1 sliver sxFwA     
n.裂片，细片，梳毛；v.纵切，切成长片，剖开
参考例句：
  • There was only one sliver of light in the darkness.黑暗中只有一点零星的光亮。
  • Then,one night,Monica saw a thin sliver of the moon reappear.之后的一天晚上，莫尼卡看到了一个月牙。
2 rigid jDPyf     
adj.严格的，死板的；刚硬的，僵硬的
参考例句：
  • She became as rigid as adamant.她变得如顽石般的固执。
  • The examination was so rigid that nearly all aspirants were ruled out.考试很严，几乎所有的考生都被淘汰了。
3 fibers 421d63991f1d1fc8826d6e71d5e15f53     
光纤( fiber的名词复数 )； （织物的）质地； 纤维，纤维物质
参考例句：
  • Thesolution of collagen-PVA was wet spined with the sodium sulfate as coagulant and collagen-PVA composite fibers were prepared. 在此基础上，以硫酸钠为凝固剂，对胶原-PVA共混溶液进行湿法纺丝，制备了胶原-PVA复合纤维。
  • Sympathetic fibers are distributed to all regions of the heart. 交感神经纤维分布于心脏的所有部分。
4 supple Hrhwt     
adj.柔软的，易弯的，逢迎的，顺从的，灵活的；vt.使柔软，使柔顺，使顺从；vi.变柔软，变柔顺
参考例句：
  • She gets along well with people because of her supple nature.她与大家相处很好，因为她的天性柔和。
  • He admired the graceful and supple movements of the dancers.他赞扬了舞蹈演员优雅灵巧的舞姿。
5 decided lvqzZd     
adj.决定了的，坚决的；明显的，明确的
参考例句：
  • This gave them a decided advantage over their opponents.这使他们比对手具有明显的优势。
  • There is a decided difference between British and Chinese way of greeting.英国人和中国人打招呼的方式有很明显的区别。
6 sodium Hrpyc     
n.（化）钠
参考例句：
  • Out over the town the sodium lights were lit.在外面，全城的钠光灯都亮了。
  • Common salt is a compound of sodium and chlorine.食盐是钠和氯的复合物。

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