中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 34 No. 10 October 2024 |
（1. Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province, School of Materials Science and Engineering, Central South University, Changsha 410083, China;
2. School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, China）
Abstract:A highly stable zinc metal anode modified with a fluorinated graphite nanosheets (FGNSs) coating was designed. The porous structure of the coating layer effectively hinders lateral mass transfer of Zn ions and suppresses dendrite growth. Moreover, the high electronegativity exhibited by fluorine atoms creates an almost superhydrophobic solid-liquid interface, thereby reducing the interaction between solvent water and the zinc substrate. Consequently, this leads to a significant inhibition of hydrogen evolution corrosion and other side reactions. The modified anode demonstrates exceptional cycling stability, as symmetric cells exhibit sustained cycling for over 1400 h at a current density of 5 mA/cm2. Moreover, the full cells with NH4V4O10 cathode exhibit an impressive capacity retention rate of 92.2% after undergoing 1000 cycles.
Key words: fluorinated graphite; hydrophobic coating; anti-corrosion; dendrite suppression; zinc metal anode
