Hydrothermal Synthesis of Manganese Dioxide Nanoparticles as Cathode Material for Rechargeable Batteries

DOI Web Site Web Site 被引用文献1件 参考文献15件
  • MOON Jin-Hee
    Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University
  • MUNAKATA Hirokazu
    Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University
  • KAJIHARA Koichi
    Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University
  • KANAMURA Kiyoshi
    Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University

この論文をさがす

抄録

Rod-shaped manganese dioxide (MnO2) nanoparticles with three different crystallographic phases, namely α-, β-, and γ-MnO2, were hydrothermally prepared. The products were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), Brunaure-Emmett-Teller (BET) method, and electrochemical measurements as cathode materials for secondary lithium-ion batteries. The crystalline phase of MnO2 depended mainly on the Mn concentration of precursor solution and reaction temperature whereas it was not influenced by the pH value of precursor solution. All the samples were obtained as secondary particles composed of rod-shaped nanoparticles and the sizes of α- and γ-MnO2 were smaller than that of β-MnO2. In electrochemical tests, the γ-MnO2 had the highest initial capacity of 190 mA h g−1 among three different crystal phases and maintained better performance than the other crystallographic samples in the subsequent discharge/charge cycles. As a result, the electrochemical performance of MnO2 depends on the crystal structure rather than the particle size.

収録刊行物

  • Electrochemistry

    Electrochemistry 81 (1), 2-6, 2013

    公益社団法人　電気化学会

被引用文献 (1)*注記

もっと見る

参考文献 (15)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ