Hierarchical porous ZnMn2O4 microspheres assembled by nanosheets for high performance anodes of lithium ion batteries,Inorganic Chemistry Frontiers

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Hierarchical porous ZnMn2O4 microspheres assembled by nanosheets for high performance anodes of lithium ion batteries
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2017-08-10 00:00:00 , DOI: 10.1039/c7qi00364a
Junsong Zeng _{1,

2,

3,

4} , Yanbiao Ren _{1,

2,

3,

4} , Shengbin Wang _{1,

2,

3,

4} , Yu Hao _{1,

2,

3,

4} , Hao Wu _{1,

2,

3,

4} , Shichao Zhang _{1,

2,

3,

4} , Yalan Xing _{1,

2,

3,

4}

Affiliation

Hierarchical porous ZnMn₂O₄ microspheres assembled by nanosheets with an average thickness of several nanometers are successfully synthesized by a facile hydrothermal method and subsequent calcination at 500 °C in air. When used as an anode electrode of lithium ion batteries (LIBs), the ZnMn₂O₄ microspheres exhibit a high discharge capacity of 1132 mA h g⁻¹ after 500 cycles at a current density of 500 mA g⁻¹ and excellent rate capability. It is believed that the outstanding electrochemical performance benefits from the hierarchical porous structure that can not only increase the contact area between the electrode and the electrolyte to facilitate the transfer of Li⁺ ions, but also provide sufficient space for volume expansion of the electrode during the cycling process.

中文翻译：

纳米片组装的多层多孔ZnMn ₂ O ₄微球用于锂离子电池的高性能阳极

通过简便的水热法并随后在空气中于500°C下煅烧，成功地合成了平均厚度为几纳米的纳米片组装的多层多孔ZnMn ₂ O ₄微球。当用作锂离子电池（LIB）的阳极电极时，ZnMn ₂ O ₄微球在500次循环后在500 mA g ^-1的电流密度下表现出1132 mA hg ^-1的高放电容量和优异的倍率能力。可以认为，出色的电化学性能得益于分层多孔结构，该结构不仅可以增加电极与电解质之间的接触面积，还可以促进Li ⁺的转移。离子，还为循环过程中电极的体积膨胀提供了足够的空间。

更新日期：2017-09-07

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