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【分享】纳米纸电池

atlas

2009/12/15

A paper battery based on carbon nanotubes and silver nanowires could store an electric charge in a mobile device. Researchers also claim the new battery is disposable and that its shape could conform to the shape of different devices.

A Stanford University researcher said his team has demonstrated conductive coatings for battery components ranging from supercapacitors to inexpensive electrodes. The process could be commercially available in several years, according to Yi Cui, a Stanford assistant professor of materials science and engineering.

"Paper can now be used as a substrate to make functional conductive electrodes," the Stanford researcher said.

The conductive paper was prepared by coating it with a special nano-ink solution containing carbon nanotubes and silver nanowires, which assemble into a thin film of one-dimensional structures that adhere to the fibrous paper surface. The coated sheet of paper became a highly conductive storage device, which the researchers charged, then connected to power light-emitting diodes.

Batteries can store a charge longer than capacitors but cannot supply as much current per unit of time. Stanford''s conductive paper could be used to build either type, but the researchers claim that its high conductivity and high surface-to-volume ratio could enable supercapacitors for electric cars, which depend on quick jolts of electricity during acceleration.

The researchers also predict that paper storage devices could be used in massive arrays to store excess energy from power grids at night, then redistribute it during the day.

In tests, the Standford researchers were able to charge and discharge the paper battery up to 40,000 times, a 10-fold increase over conventional lithium-ion batteries.

Bing Hu, a Stanford Univeristy post-doctoral fellow, applies special ink to ordinary paper, depositing nanotubes on the surface that can then be charged to create a battery.

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该帖子已被版主-hhhmonkey加2积分，加2经验;加分理由:希望继续贴一些这样的知识贴

相关话题

bjeumb

第1楼2009/12/15

太有创意了，佩服

0

楚无伤

第2楼2009/12/15

传说中的纳米
不知道啥时候能够成为成熟的商业产品呢？
期待ing

0

梧桐

第3楼2010/01/18

全英文哦，看不懂

0

平古

第4楼2010/01/19

我想应该有待发展吧。

0

穿越时空

第5楼2010/01/31

连试产也不是,大批量生产再说吧.

0

medodo

第6楼2010/02/16

check out this
英国发明储电塑料10年内可取代电池中国质量新闻网 2010-02-11 07:18:05 据新华社电英国科学家研制出一种能够充放电的塑料。研究者称，这种新型塑料有望取代眼下手机、随身听、汽车等使用的电池。

英国《每日邮报》网络版近日报道，伦敦帝国理工学院研究人员制作的新型储电塑料样品约32平方厘米大，厚度与一块饼干相近，充电5秒后能为一个发光二极管供电20分钟。

这种储电塑料工作原理与传统电池类似，由3层纤维材料组成。上下两层碳纤维覆盖导电树脂，分别充当正负极；中间夹层为玻璃纤维。

但研究小组成员埃米尔·格林哈尔格称，这种储电塑料并不是真正的电池，而更类似一个超级电容器。它比传统电池更轻薄、充放电速度更快，使用时也不会发生化学反应，因此寿命更长。

研究人员眼下正与瑞典沃尔沃汽车公司合作，研究将这种材料应用于该公司的油电混合动力车，以减轻汽车重量并提升工作效率。但格林哈尔格说，这一研究成果的应用范围可以扩大至手机、随身听等小型设备。

按他的说法，假如这种储电塑料得到广泛应用，人们可能将拥有“信用卡大小”的手机，甚至可能出现带发热保暖功能的衣服。他预计，这种新型储电塑料“可能在10年内取代电池”。《中国质量报》

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