Shanghai Electrochemical Energy Devices Research Center, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
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。
