Electrochemical properties of nanostructured copper hydroxysulfate mineral brochantite upon reaction with lithium

Ran Zhao, Ting Yang, Michael A. Miller, Candace Chan

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

Cu-containing conversion electrodes have received much study as high capacity electrodes for lithium-ion batteries, but many suffer from poor reversibility. The electrochemical properties of the copper hydroxysulfate compound, Cu4(OH)6SO4, more commonly known as the mineral brochantite and as a patina constituent on the Statue of Liberty, were investigated. Nanostructured brochantite was synthesized using precipitation and microwave-assisted hydrothermal reactions and evaluated in half-cells with Li metal counter electrodes. Reversible capacities >400 mAh/g corresponding to the 2 electron reduction of Cu2+ and discharge potential of 1.8 V versus Li/Li+ were observed in brochantite with a nanoplate morphology. Detailed characterization using X-ray diffraction, scanning and transmission electron microscopy, and X-ray photoelectron spectroscopy was performed to better understand the conversion process.

Original languageEnglish (US)
Pages (from-to)6055-6063
Number of pages9
JournalNano Letters
Volume13
Issue number12
DOIs
StatePublished - Dec 11 2013

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Keywords

  • Lithium-ion battery
  • conversion electrode
  • copper hydroxysulfate
  • nanoplates
  • polyanion

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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