摘要
硅基微型超级电容器(MSCs)是小型电子产品中重要的硅基兼容电源备份。尽管具有巨大的优势,但MSCs需要苛刻的处理条件,当过滤交流电的波纹时,通常表现得像电阻一样。上海交通大学介熵物质研究室庄小东教授和冯新亮教授等报道了一种简便的基于薁基桥联的配位聚合物框架(PiCBA)的MSCs。此类MSCs表现出优异的交流线路滤波性能(120 Hz时的阻抗相位角为-73°),电阻电容时间常数较小,约为0.83 ms。PiCBA具有良好的载流子迁移率(5×10^-3 cm^2/(V·s))、薁基骨架的永久偶极矩和PiCBA的低带隙,由这种材料制备的MSCs可在50 mV/s下实现34.1 F/cm^3的高比电容和1 323 W/cm^3的高体积功率密度。
On-chip micro-supercapacitors(MSCs) are important Si-compatible power-source backups for miniaturized electronics. Despite their tremendous advantages, current on-chip MSCs require harsh processing conditions and typically perform like resistors when filtering ripples from alternating current(AC). A facile layer-by-layer method was reported to fabricate on-chip MSCs based on an azulene-bridged coordination polymer framework(PiCBA) by Prof. Zhuang and Prof.Feng at the Meso-Entropy Lab, Shanghai Jiao Tong University and their coworkers. Such MCSs exhibited AC line-filtering performance(phase angle-73° at 120 Hz) with a short resistance-capacitance constant of 0.83 ms. Furthermore, owing to the good carrier mobility(5×10^-3 cm^2/(V·s)) of PiCBA, the permanent dipole moment of azulene skeleton, and ultralow bandgap of PiCBA, the as-fabricated MSCs delivered high specific capacitance of up to 34.1 F/cm^3 at 50 mV/s and high volumetric power density of 1 323 W/cm^3.
作者
陈彧
CHEN Yu(School of Chemistry and Molecular Engineering,East China University of Science and Technology,Shanghai 200237,China)
出处
《功能高分子学报》
CAS
CSCD
北大核心
2020年第2期105-107,共3页
Journal of Functional Polymers
基金
国家自然科学基金(51333002)。
