Porous, hollow Li<sub class="a-plus-plus">1.2sub>Mn<sub class="a-plus-plus">0.53sub>Ni<sub class="a-plus-plus">0.13sub>Co<sub class="a-plus-plus">0.13sub>O<sub class="a-plus-plus">2sub> microspheres as a positive electrode material for Li-ion batteries

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• 作者：Shanmughasundaram Duraisamy ; Tirupathi Rao Penki…
• 关键词：Sacrificial MnO2 template ; Hollow microspheres ; Lithium excess manganese oxide composite ; High discharge capacity ; High rate capability
• 刊名：Journal of Solid State Electrochemistry
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：21
• 期：2
• 页码：437-445
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Physical Chemistry; Electrochemistry; Energy Storage; Characterization and Evaluation of Materials; Analytical Chemistry; Condensed Matter Physics;
• 出版者：Springer Berlin Heidelberg
• ISSN：1433-0768
• 卷排序：21

文摘

A porous, hollow, microspherical composite of Li<sub>2sub>MnO<sub>3sub> and LiMn<sub>1/3sub>Co<sub>1/3sub>Ni<sub>1/3sub>O<sub>2sub> (composition: Li<sub>1.2sub>Mn<sub>0.53sub>Ni<sub>0.13sub>Co<sub>0.13sub>O<sub>2sub>) was prepared using hollow MnO<sub>2sub> as the sacrificial template. The resulting composite was found to be mesoporous; its pores were about 20 nm in diameter. It also delivered a reversible discharge capacity value of 220 mAh g−1 at a specific current of 25 mA g−1 with excellent cycling stability and a high rate capability. A discharge capacity of 100 mAh g−1 was obtained for this composite at a specific current of 1000 mA g−1. The high rate capability of this hollow microspherical composite can be attributed to its porous nature.