科研之友
微信
新浪微博
Facebook
分享链接
摘要
Nanostructured electrochemical capacitors (ECs) are advantageous for charge and energy storage due to their intrinsically large surface area, which contributes to a large electrostatic/double layer capacitor (C-dl). However, the intrinsically small density of states in nanostructures results in a quantum capacitor (C-Q) in series with C-dl which could diminish the total device capacitance value (C-tot). We investigate, through comparison with experiment, the relative magnitudes of C-dl and C-Q in electrodes constituted of carbon nanotube arrays. Consequently, we attribute the increase in C-tot resulting from ionizing radiation to an increase in C-Q and suggest limits to the capacitance in ECs.
- 出版日期2013-4-29
