ZIF-L/PBA-derived transition metal-based N-doped CNT modified membranes for lithium-sulfur batteries

• Published in: The Journal of physics and chemistry of solids 2024-09, Vol.192, p.112088, Article 112088
• Main Authors: Gao, Song, Li, Siqi, Han, Miao, E, Yuanlong, Jia, Hongsheng
• Format: Article
• Language: English
• Subjects: Lithium-sulfur battery; MOF; Separator; Transition metal
• ISSN: 0022-3697; 1879-2553
• DOI: 10.1016/j.jpcs.2024.112088

The dual MOF framework ZIF-L/X-PBA (X = Fe, Co, and Ni) was formed by combining ZIF-L with Prussian blue (PBA), from which Fe3C-NCNT, Co-NCNT, and Ni-NCNT were derived. The effect of NCNT derived from different transition metals PBA on batteries performance was studied. Tests showed that the Li–S batteries using Fe3C-NCNT obtained an initial discharge capacity of 1456 mAh g−1 at 0.2 C, while the batteries using Co-NCNT and Ni-NCNT had inferior performance in all aspects compared to Fe3C-NCNT. It was found that Fe3C-NCNT had the best performance, and that the inhibitory effect of MOF derivatives on LiPS varied due to the different characteristics of the metal centers, but they all could suppress shuttle effect and extend the life of the batteries. •Dual MOF framework ZIF-L/X-PBA was formed by combining ZIF-L with Prussian blue.•Fe3C–N-CNT, Co–N-CNT and Ni–N-CNT could suppress shuttle effect and extend cycle life.•Fe3C–N-CNT with a superior performance than Co–N-CNT and Ni–N-CNT.