One-step combustion method for pomegranate Si/Ni compostie anode
One-step combustion method for pomegranate Si/Ni compostie anode
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DOI：
10.1016/j.matlet.2018.08.035
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发表时间：
2018-11
影响因子：
3
通讯作者：
Chaoqun Liu;Zhixin Zhang;Xiu Li;L. Qiao;Yujun Fu
中科院分区：
文献类型：
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作者：
Chaoqun Liu;Zhixin Zhang;Xiu Li;L. Qiao;Yujun Fu
硅由于其高理论容量和低充电电位而被认为是下一代锂离子电池阳极的有希望的候选者。然而，在锂离子插入和拔出过程中的大体积变化阻碍了其实际应用。在这项工作中，我们开发了一种简单的方法来制备石榴Si/Ni复合材料，以解决上述问题。石榴复合材料通过Ni纳米泡沫连接在一起，可以通过简单的机械压缩直接转化为电极，而不使用集流体，导电剂和粘合剂。石榴石Si/Ni复合材料在1000次循环后表现出良好的循环稳定性和0.84 mAh的高可逆容量。这种燃烧法是一种简便、经济的方法，为硅阳极材料的工业化应用提供了一种新的思路。
Silicon is considered as a promising candidate for next-generation lithium-ion battery anodes due to its high theoretical capacity and low charge potential. However, large volume change during Li-ion insertion and extraction hinders its practical application. In this work, we develop a facile approach to fabricate pomegranate Si/Ni composite to solve the aforementioned problem. The pomegranate composites are linked together by Ni nanofoams, which can be directly converted into electrode by simple mechanical compression without the use of current collector, conductive agent, and binder. The pomegranate Si/Ni composite exhibits good cycling stability after 1000 cycles and a high reversible capacity of 0.84 mAh. This combustion method is a facile and economical approach, which provides a new idea for the commercial application of Si anode materials.