Herein, a N-doped carbon nanotube encapsulated FeF nanoparticle (FeF@N-CNTs) composite was developed pyrolysis and gas-phase fluorination strategies. The 3D carbon constrained scaffold enhances conversion reaction kinetics and effectively suppresses significant volume changes in the FeF cathode during cycling. Consequently, FeF@N-CNTs exhibits excellent rate capability and maintains a high discharge capacity of 110.6 mA h g after 5000 cycles at 2 A g. It is believed that this study presents an innovative strategy for the development of long-cycling conversion-type cathode materials.
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| http://dx.doi.org/10.1039/d4cc04960h | DOI Listing |
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