nanosurface 2007-08-15 00:11
美国科学家发明纸张电池 电池生产就像印刷报纸
[size=5][b]美国科学家发明纸张电池 电池生产就像印刷报纸[/b][/size],c ~/^
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【纳米科技世界快讯】CNET科技资讯网2007年8月14日报道 美国研究人员8月13日表示,已经发明出形状像纸张那样的超轻、超灵活、生物可降解的电池,这一技术将引起消费电子产品厂商的兴趣。
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通过利用纳米以及其它技术,研究人员找到了如何将普通锂离子电池技术缩小、封闭到一张纤维素纸张上的办法。早期原型产品能够被夹在姆指和食指之间,它的电压为2.5伏,中心带动一个小风扇,或一个小灯泡。
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研究人员表示,他们能够很容易地提高这款产品的电压,为任何电子产品提供电能。莱塞拉尔理工学院的生物化学教授罗伯特说,我们可以将电池堆叠起来提高电压,我们已经进行了堆叠10块电池的试验,但用户可以将500块电池堆叠起来,而且可以折叠成任何形状。
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锂离子电池被广泛地应用在各种消费电子产品中,例如笔记本电脑、数码相机、手机。厂商在不断地寻找缩小锂离子电池尺寸和提高它们效率的方法,提高产品的实用性和便携性。,q~7s([
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与许多公司一样,莱塞拉尔理工学院的研究人员使用了碳纳米管。他们利用碳纳米管作为电极,利用离子态溶液作为电池的电解液,碳纳粹管被嵌入在纤维素中,电解液被浸入在纤维素中,纤维素则充当了绝缘材料。t%Qw7aF)zD0@
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原型产品中使用的材料都非常廉价,但研究人员仍然在研究廉价地大规模生产这种电池的方法。他们希望能够象印刷报纸那样“印刷”电池。
nanosurface 2007-08-15 00:11
英文的消息可以看看这里
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[url]http://www.nanost.net/bbs/thread-11904-1-1.html[/url]
caitokyo 2007-08-16 12:42
楼上的能否给出PNAS中这篇文章的链接?我怎么找了3天都没看到这篇文章呢?
nanost-admin 2007-08-16 12:45
回复 #3 caitokyo 的帖子
也许在下一篇上,有时候学校的新闻内容也不是100%的准确。可以直接向作者发信所要,一般会给的。找到了在这里说明一下。谢谢!
goinfall 2007-09-13 00:42
Flexible energy storage devices based on nanocomposite papery]Ng tv
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Published online before print August 15, 2007, 10.1073/pnas.0706508104 VC'fr.s9td
PNAS | August 21, 2007 | vol. 104 | no. 34 | 13574-13577v f|%p-~x*\)tE k
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Victor L. Pushparaj*, Manikoth M. Shaijumon*, Ashavani Kumar*, Saravanababu Murugesan, Lijie Ci*, Robert Vajtai, Robert J. Linhardt, Omkaram Nalamasu*, and Pulickel M. Ajayan*,, ur:x-^+{*sOpM
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There is strong recent interest in ultrathin, flexible, safe energy storage devices to meet the various design and power needs of modern gadgets. To build such fully flexible and robust electrochemical devices, multiple components with specific electrochemical and interfacial properties need to be integrated into single units. Here we show that these basic components, the electrode, separator, and electrolyte, can all be integrated into single contiguous nanocomposite units that can serve as building blocks for a variety of thin mechanically flexible energy storage devices. Nanoporous cellulose paper embedded with aligned carbon nanotube electrode and electrolyte constitutes the basic unit. The units are used to build various flexible supercapacitor, battery, hybrid, and dual-storage battery-in-supercapacitor devices. The thin freestanding nanocomposite paper devices offer complete mechanical flexibility during operation. The supercapacitors operate with electrolytes including aqueous solvents, room temperature ionic liquids, and bioelectrolytes and over record temperature ranges. These easy-to-assemble integrated nanocomposite energy-storage systems could provide unprecedented design ingenuity for a variety of devices operating over a wide range of temperature and environmental conditions.j'RNDQMYJ
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[[i] 本帖最后由 goinfall 于 2007-09-12 11:45 编辑 [/i]]