超级电容器
材料科学
电解电容器
纳米技术
数码产品
电解质
电容器
碳纤维
电极
电气工程
光电子学
电压
电容
复合材料
工程类
化学
物理化学
复合数
作者
John Chmiola,Céline Largeot,Pierre‐Louis Taberna,Patrice Simon,Yury Gogotsi
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2010-04-23
卷期号:328 (5977): 480-483
被引量:1192
标识
DOI:10.1126/science.1184126
摘要
Microbatteries with dimensions of tens to hundreds of micrometers that are produced by common microfabrication techniques are poised to provide integration of power sources onto electronic devices, but they still suffer from poor cycle lifetime, as well as power and temperature range of operation issues that are alleviated with the use of supercapacitors. There have been a few reports on thin-film and other micro-supercapacitors, but they are either too thin to provide sufficient energy or the technology is not scalable. By etching supercapacitor electrodes into conductive titanium carbide substrates, we demonstrate that monolithic carbon films lead to a volumetric capacity exceeding that of micro- and macroscale supercapacitors reported thus far, by a factor of 2. This study also provides the framework for integration of high-performance micro-supercapacitors onto a variety of devices.
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