Coordination Polymer Framework Based On-Chip Micro-Supercapacitors with AC Line-Filtering Performance

Chongqing Yang, Karl Sebastian Schellhammer, Frank Ortmann, Sai Sun, Renhao Dong, Melike Karakus, Zoltán Mics, Markus Löffler, Fan Zhang, Xiaodong Zhuang, Enrique Cánovas, Gianaurelio Cuniberti, Mischa Bonn, Xinliang Feng

Research output: Contribution to journalArticlepeer-review

136 Scopus citations

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 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 34.1 F cm−3 at 50 mV s−1 and a high volumetric power density of 1323 W cm−3. Most importantly, such MCSs exhibited AC line-filtering performance (−73° at 120 Hz) with a short resistance–capacitance constant of circa 0.83 ms.

Original languageEnglish
Pages (from-to)3920-3924
Number of pages5
JournalAngewandte Chemie International Edition in English
Volume56
Issue number14
DOIs
StatePublished - 27 Mar 2017
Externally publishedYes

Keywords

  • AC line-filtering
  • azulene
  • coordination polymers
  • layer-by-layer methods
  • micro-supercapacitors

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