Elucidating metal and ligand redox activities of a copper-benzoquinoid coordination polymer as the cathode for lithium-ion batteries

Cheng Han Chang, An Che Li, Ilja Popovs, Watchareeya Kaveevivitchai, Jeng Lung Chen, Kai Chun Chou, Ting Shen Kuo, Teng Hao Chen

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

A novel redox-active quinone-based organic building block 1,4-dicyano-2,3,5,6-tetrahydroxybenzene (LH4) has been synthesized and used as a bridging ligand to form a new 1D copper-benzoquinoid coordination polymer [CuL(DMF)2]n. The compound is able to deliver an initial capacity as high as 268 mA h g-1 at 30 mA g-1 (∼C/2.5) when used as the cathode in Li batteries. Ex situ XPS and FT-IR reveal the involvement of both Cu and organic moieties in the multi-electron redox reaction. Cu K-edge XANES and EXAFS measurements confirm the change in the oxidation state and coordination environment of Cu during the discharge-charge process. In situ generated metallic nanoparticles have been observed by TEM. The obtained mechanistic understanding of the metal-organic electrode materials for Li-based batteries may pave the way for the design of next-generation energy-storage systems.

Original languageEnglish
Pages (from-to)23770-23774
Number of pages5
JournalJournal of Materials Chemistry A
Volume7
Issue number41
DOIs
Publication statusPublished - 2019

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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