Yolk-shell Co<sub>3</sub>O<sub>4</sub>-CoO/Carbon Composites for Lithium-Ion Batteries with Enhanced Electrochemical Properties

Gongrui Wang; Yanshuang Meng; Lei Wang; Jun Xia; Fuliang Zhu; Yue Zhang

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Yolk-shell Co₃O₄-CoO/Carbon Composites for Lithium-Ion Batteries with Enhanced Electrochemical Properties

机译：蛋黄壳Co _{3 O _{4 -CoO /碳复合材料用于增强锂离子电池的电化学性能}}

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A novel yolk-shell structured Co3O4-CoO/Carbon (Co3O4-CoO/C) composite was prepared and applied as cathode active materials in lithium ion batteries. The composites were prepared through a facile copolymerization of ionic liquid and acrylonitrile, which were used as carbon sources, followed by carbonization. The yolk-shell structure of the composite endows the electrodes with excellent cycling performance due to improved electronic conductivity, reduced strain and depressed aggregation of active materials compared with bare Co3O4. Thus, the Co3O4-CoO/C composite showed a high reversible capacity and cycling life of 590 mAh·g-1 after 50 charge/discharge cycles at a current rate of 890 mAh·g-1.

机译：制备了一种新型的蛋黄壳结构的Co3O4-CoO /碳（Co3O4-CoO / C）复合材料，并将其用作锂离子电池的正极活性材料。通过将用作碳源的离子液体和丙烯腈轻松共聚，然后进行碳化来制备复合材料。与裸露的Co3O4相比，复合材料的蛋黄-壳结构使电极具有出色的循环性能，这是由于提高了电子导电性，降低了应变并降低了活性物质的聚集。因此，在以890mAh·g-1的电流速率进行50次充电/放电循环后，Co3O4-CoO / C复合材料显示出高的可逆容量和590 mAh·g-1的循环寿命。

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《International Journal of Electrochemical Science》 |2017年第4期|共10页
作者
Gongrui Wang; Yanshuang Meng; Lei Wang; Jun Xia; Fuliang Zhu; Yue Zhang;
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4. Design of carbonaceous materials for enhanced electrochemical performances of silicon/carbon composite nanofiber lithium-ion battery anode [C] . Byoung-Sun LEE, Ho-Sung YANG, Heechul JUNG Annual World Conference on Carbon . 2015

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5. SnO2/Graphene Nanocomposites as High-Capacity Anode Materials for Lithium-Ion Batteries: Synthesis and Electrochemical Performance [D] . Zhu, Xiuming. 2018

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6. Preparation and Electrochemical Properties of Li3V2(PO4)3−xBrx/Carbon Composites as Cathode Materials for Lithium-Ion Batteries [O] . Xiaoyu Cao, Lulu Mo, Limin Zhu, 2017

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7. Yolk-shell Co3O4-CoO/Carbon Composites for Lithium-Ion Batteries with Enhanced Electrochemical Properties [O] . Gongrui Wang 2017

机译：用于锂离子电池的Yolk-Shell Co3O4-CoO /碳复合材料，具有增强的电化学性能

Yolk-shell Co3O4-CoO/Carbon Composites for Lithium-Ion Batteries with Enhanced Electrochemical Properties

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Yolk-shell Co₃O₄-CoO/Carbon Composites for Lithium-Ion Batteries with Enhanced Electrochemical Properties