A nitrogen doped carbonized metal-organic framework for high stability room temperature sodium-sulfur batteries

Yu Ming Chen, Wenfeng Liang, Si Li, Feng Zou, Sarang M. Bhaway, Zhe Qiang, Min Gao, Bryan D. Vogt, Yu Zhu

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Abstract

A nanoporous nitrogen doped carbon matrix was prepared by carbonization of metal-organic framework zeolitic imidazolate framework (ZIF-8) precursors. The doped carbon matrix was melt-infiltrated with sulfur to form a carbonized ZIF-8/S composite. The composite material exhibited good performance as the cathode for room-temperature sodium-sulfur battery (Na-S) systems. A reversible specific capacity of around 1000 mA h g-1 could be achieved at a rate of 0.1C; and a reversible specific capacity of 500 mA h g-1 was obtained at a rate of 0.2C after 250 cycles. The good performance of the Na-S battery could be attributed to the synergistic effect from the nanoporosity of the carbon matrix and the high nitrogen-doping content (ca. ∼18 at%). These attributes enhanced the entrapment of the sulfur molecules inside the carbon matrices.

Original languageEnglish (US)
Pages (from-to)12471-12478
Number of pages8
JournalJournal of Materials Chemistry A
Volume4
Issue number32
DOIs
StatePublished - Jan 1 2016

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All Science Journal Classification (ASJC) codes

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

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