Facile synthesis and electrochemical properties of MoO₂/reduced graphene oxide hybrid for efficient anode of lithium-ion battery

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• 作者：Chunyan Zhang^a ; ^b ; Peigen Zhang^c ; Juan Dai^c ; Hui Zhang^a ; Anjian Xie^a ; ^c ; ^{anjx@ahu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Yuhua Shen^c ; ^{s_yuhua@163.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：MoO2/RGO hybrid ; Freeze-drying method ; Lithium-ion battery ; Anode
• 刊名：Ceramics International
• 出版年：2016
• 出版时间：1 February 2016
• 年：2016
• 卷：42
• 期：2
• 页码：3618-3624
• 全文大小：2177 K

文摘

In this work, we developed the freeze-drying method with thermal annealing in nitrogen atmosphere to prepare a hybrid containing molybdenum dioxide (MoO₂) and reduced graphene oxide (RGO) from ammonium molybdate (NH₄)₆Mo₇O₂₄·4H₂O and graphene oxide (GO). As a result, MoO₂ nanoplates were uniformly anchored on RGO matrix, and when used as an anode material for lithium ion batteries, the hybrid delivered excellent electrochemical properties including high rate capability and stable cycle performance, the reversible capacity remained at ~800 mA h g⁻¹ after 120 cycles at a current density of 100 mA g⁻¹. The high capacity over prolonged cycling achieved could be attributed to the formation of two-dimensional electrical percolating networks, homogeneous dispersion and immobilization of MoO₂ nanoparticles.