Manganese oxide octahedral molecular sieves as insertion electrodes for rechargeable Mg batteries

Shahid Rasul, Shinya Suzuki, Shu Yamaguchi, Masaru Miyayama

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

Magnesium has been inserted electrochemically into manganese oxide octahedral molecular sieves (OMS-5 MnO2) at room temperature. Discharge/charge profiles show that a large amount of Mg, i.e., 0.37 Mg/Mn can be inserted electrochemically using 1 M Mg(ClO4)2/AN electrolyte when OMS-5 is prepared in presence of acetylene black. X-ray diffraction analysis and discharge/charge profiles verify that a solid state solution reaction takes place upon Mg insertion into the host lattice with concurrent reduction of Mn4+ to Mn2+. However, upon each reduction of Mn by Mg insertion and resultant dissolution into electrolyte, decrease in the active compound occurs consequently. A low intrinsic electronic conductivity of OMS-5 was suggested to play a vital role in Mg insertion into the host. © 2013 Elsevier Ltd.
Original languageEnglish (US)
Pages (from-to)247-252
Number of pages6
JournalElectrochimica Acta
Volume110
DOIs
StatePublished - Nov 2013

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

Fingerprint Dive into the research topics of 'Manganese oxide octahedral molecular sieves as insertion electrodes for rechargeable Mg batteries'. Together they form a unique fingerprint.

Cite this