Abstract
Lithium metal batteries are promising candidates for next generation high energy batteries. However, an undesirable dendrite growth hinders their practical applications. Herein, a three-dimensional (3D) porous carbon nanotube film decorated with Ag nanoparticles (CNT/Ag) has been synthesized via the thermal decomposition reaction of AgNO3 into Ag nanoparticles, and then is transformed into a 3D porous CNT/Ag/Li film via thermal infusion to obtain a high-performance free-standing lithium host. This as-formed 3D CNT/Ag/Li host can effectively restrain the dendrite growth by guiding Li deposition via the highly lithiophilic Ag nanoparticle seeds and lowering local current density of the highly conductive matrix. The as-prepared CNT/Ag/Li electrode exhibits long-term cycling stability over 200 cycles at a current density of 1 mA cm-2 with an areal capacity of 1.0 mA h cm-2. Moreover, the full cell paired with a sulfur/C cathode shows good cycling stability. Therefore, the 3D porous CNT/Ag/Li film formed via a facile three-step fabrication process can enlarge the cycle lifetime of a lithium metal anode.
| Original language | English |
|---|---|
| Pages (from-to) | 30880-30886 |
| Number of pages | 7 |
| Journal | RSC Advances |
| Volume | 10 |
| Issue number | 51 |
| DOIs | |
| Publication status | E-pub ahead of print - 20 Aug 2020 |
| Externally published | Yes |
Funding
This work was supported by the financial support from the startup funds from the University of Electronic Science and Technology of China (Y030202059018003).