Coordination Polymer Framework Based On-Chip Micro-Supercapacitors with AC Line-Filtering Performance.
Angew Chem Int Ed Engl
; 56(14): 3920-3924, 2017 03 27.
Article
en En
| MEDLINE
| ID: mdl-28267257
ABSTRACT
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). Herein, we demonstrated a facile layer-by-layer method towards on-chip MSCs based on an azulene-bridged coordination polymer framework (PiCBA). Owing to the good carrier mobility (5×10-3 â
cm2 V-1 s-1 ) of PiCBA, the permanent dipole moment of azulene skeleton, and ultralow band gap of PiCBA, the fabricated MSCs delivered high specific capacitances of up to 34.1â
F cm-3 at 50â
mV s-1 and a high volumetric power density of 1323â
W cm-3 . Most importantly, such MCSs exhibited AC line-filtering performance (-73° at 120â
Hz) with a short resistance-capacitance constant of circa 0.83â
ms.
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