AlF 修饰的碳纳米纤维作为多功能 3D 夹层用于稳定的锂金属负极。
AlF-Modified carbon nanofibers as a multifunctional 3D interlayer for stable lithium metal anodes.
机构信息
Shanghai Electrochemical Energy Devices Research Center, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
出版信息
Chem Commun (Camb). 2018 Jul 24;54(60):8347-8350. doi: 10.1039/c8cc04422h.
A versatile interlayer in which AlF3 particles are embedded within carbon nanofibers (AlF3@CNFs) is reported to induce controllable Li+ deposition and achieve a dendrite free Li metal anode. Due to the AlF3 reducing Li nucleation overpotential and CNFs providing high Young's moduli up to 47 GPa, a high Coulombic efficiency (97.2%) and a long lifespan (900 h) are achieved in the carbonate-based electrolyte. A long cycling life is also realized by using interlayer-protected lithium anodes in Li-S batteries.
本文报道了一种多功能夹层，其中嵌入了碳纳米纤维中的 AlF3 颗粒（AlF3@CNFs），可诱导可控的 Li+沉积并实现无枝晶 Li 金属阳极。由于 AlF3 降低了 Li 成核过电位，而 CNFs 提供了高达 47 GPa 的高杨氏模量，因此在碳酸盐电解质中实现了高库仑效率（97.2%）和长寿命（900 h）。通过在 Li-S 电池中使用层间保护的锂阳极，也实现了长循环寿命。
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