Assembling laminated films: Via the synchronous reduction of graphene oxide and formation of copper-based metal organic frameworks

Li Li, Ruyi Chen, Yujiao Gong, Chenyang Yu, Zengyu Hui, Hai Xu, Xi Zhao, Yue Sun, Wen Zhao, Gengzhi Sun, Wei Huang

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

Metal organic frameworks (MOFs) with small particle sizes and incorporated redox sites have attracted tremendous attention as promising electrode materials in supercapacitors (SCs). However, their wide adoption is seriously limited by their poor conductivity and complicated preparation route. Herein, we report a low-cost, single-step method to assemble free-standing laminated hybrid films via the synchronous reduction of graphene oxide (GO) and formation of copper-based MOFs. During this process, small Cu-MOF nanoparticles (NPs) with a mean diameter of 50 nm are in situ embedded in reduced graphene oxide (rGO) to overcome the insulating problem of MOFs and the restacking of the rGO nanosheets. Due to the positive synergistic effects between Cu-MOF crystals and rGO nanosheets, the hybrid Cu-MOF/rGO film electrode delivers a high specific capacitance of 1871 F g -1 at 0.5 A g -1 and a good electrochemical stability with 89% retention after 5000 charge-discharge cycles.

Original languageEnglish
Pages (from-to)107-111
Number of pages5
JournalJournal of Materials Chemistry A
Volume7
Issue number1
DOIs
StatePublished - 2019

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