阳极
材料科学
分离器(采油)
纳米颗粒
锂(药物)
化学工程
化学吸附
电极
离子
磷
吸附
粒子(生态学)
锂离子电池
无机化学
电池(电)
纳米技术
化学
冶金
物理化学
有机化学
海洋学
量子力学
医学
热力学
内分泌学
功率(物理)
物理
地质学
工程类
作者
Cheng Liu,Xinpeng Han,Cheng‐Lung Chen,Jingzhou Yin,Lili Zhang,Jie Sun
出处
期刊:Nano Letters
[American Chemical Society]
日期:2023-04-07
卷期号:23 (8): 3507-3515
被引量:23
标识
DOI:10.1021/acs.nanolett.3c00656
摘要
Phosphorus has been regarded as one of the most promising next-generation lithium-ion battery anode materials, because of its high theoretical specific capacity and safe working potential. However, the shuttle effect and sluggish conversion kinetics hamper its practical application. To overcome these limitations, we decorated SnO2 nanoparticles at the surface of phosphorus using an electrostatic self-assembly method, in which SnO2 can participate in the discharge/charge reaction, and the Li2O formed can chemically adsorb and suppress the shuttle of soluble polyphosphides across the separator. Additionally, the Sn/Li–Sn alloy can enhance the electrical conductivity of the overall electrode. Meanwhile, the similar volume changes and simultaneous lithiation/delithiation process in phosphorus and SnO2/Sn are beneficial for avoiding additional particle damage near two-phase boundaries. Consequently, this hybrid anode exhibits a high reversible capacity of ∼1180.4 mAh g–1 after 120 cycles and superior high-rate performance with ∼78.5% capacity retention from 100 to 1000 mA g–1.
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