每周分享：《Journal of the American Chemical Society》发表文章

       今天给大家分享的是2014年1月份《Journal of the American Chemical Society》上发表的一篇名为：Ultrahigh-Power Flexible Electrochemical Capacitors Using Binder-Free Single-Walled Carbon Nanotube Electrodes and Hydrogel Membranes 。

文章摘要如下：

Binder-free single-walled carbon nanotubes were self-assembled to form a highly dense 20 μm thick carbon nanotube electrode to be used in electrochemical capacitors. Fabrication of symmetric nanotube capacitors using these electrodes and highly ionically conducting poly(vinyl alcohol)-based hydrogel membranes soaked in aqueous sulfuric acid resulted in a capacitor with power density as high as 1040kW/kg based on the mass of both electrodes. The time constant of the assembled capacitor was 15 ms. The capacitors showed no degradation in performance even after 10000 cycles. Pseudocapacitance was further induced by modifying the surface of nanotube electrodes to almost double the specific capacitance while retaining the high power and cycling performance.

该文章中材料表征采用的是美国麦克仪器ASAP 2020，使用该仪器获得材料氮气吸附脱附等温线。

详情可参考下面链接：

http://pubs.acs.org/doi/abs/10.1021/jp410502s