Electrochemical performance of MIL-53(Fe)@RGO as an Organic Anode Material for Li-ion Batteries

Chuanhui Zhang, Weiqiang Hu, Heng Jiang, Jeng-Kuei Chang, Mingsen Zheng*, Qi Hui Wu, Quanfeng Dong

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

Metal–organic frameworks (MOFs) may be promising multifunctional materials attributing to their large internal surface areas and high porosities that can favor charge transport. In this article, MIL-53(Fe) has been investigated as an anode material for Li-ion batteries. It showed decent performance on account of the redox reaction (Fe 3+  ↔ Fe 0 ). However, the carboxylate groups of terephthalate acid ligands did not show electrochemical activity due to the poor electrical conductivity of MIL-53(Fe) and the formation of thick solid electrolyte interphase layer. In this case, reduced graphene oxide (RGO) was then composited to resolve the problem, which named as MIL-53(Fe)@RGO. The composite exhibited better electrochemical performance than the sole MIL-53(Fe). Specifically, a reversible discharge specific capacity of 550 mA h g −1 could be still achieved at 100 mA g −1 after 100 cycles within the voltage range of 0.01–3.0 V, an reversible discharge capacity of about 300 mA h g −1 was obtained even at 2 A g −1 . These values are much higher than those of currently used graphitic materials. RGO makes it even more possibility for MOFs to be adopted as electrode materials for Li-ion batteries.

Original languageEnglish
Pages (from-to)528-535
Number of pages8
JournalElectrochimica Acta
Volume246
DOIs
StatePublished - 20 Aug 2017

Keywords

  • Metal–organic frameworks
  • MIL-53(Fe)
  • Reduced graphene oxide
  • Terephthalate acid ligands

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