阳极
材料科学
阴极
纳米线电池
硅
电池(电)
锂(药物)
纳米技术
扫描电子显微镜
纳米线
纳米结构
透射电子显微镜
电极
锂离子电池
化学工程
光电子学
磷酸钒锂电池
化学
复合材料
物理
内分泌学
物理化学
功率(物理)
工程类
医学
量子力学
作者
Nian Liu,Liangbing Hu,Matthew T. McDowell,Ariel Jackson,Yi Cui
出处
期刊:ACS Nano
[American Chemical Society]
日期:2011-06-28
卷期号:5 (8): 6487-6493
被引量:525
摘要
Silicon is one of the most promising anode materials for the next-generation high-energy lithium ion battery (LIB), while sulfur and some other lithium-free materials have recently shown high promise as cathode materials. To make a full battery out of them, either the cathode or the anode needs to be prelithiated. Here, we present a method for prelithiating a silicon nanowire (SiNW) anode by a facile self-discharge mechanism. Through a time dependence study, we found that 20 min of prelithiation loads ∼50% of the full capacity into the SiNWs. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) studies show that the nanostructure of SiNWs is maintained after prelithiation. We constructed a full battery using our prelithiated SiNW anode with a sulfur cathode. Our work provides a protocol for pairing lithium-free electrodes to make the next-generation high-energy LIB.
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