Superior electrochemical performance of Ti-doped Na3V2O2(PO4)2F@C/CNF composites for sodium-ion batteries
Source abstract
Abstract
Vanadium based polyanion-type compounds are considered ideal cathode materials for SIBs due to their relatively high working voltage, specific capacity, and safety. However electronic conductivity and sodium ion diffusion rate need to be improved. In this work Ti-doped Na3V2O2(PO4)2F with carbon coating and CNF interwinding composites are prepared solvothermally. Ti-doping can inhibit agglomeration and reduce particle size of NVOPF which leads to enhanced electron and ion transport. The NVOPF@C/CNF-Ti0.1 can deliver 120.5 mAh g-1 capacity at 0.2 C and 81.9% retention rate after 1000 cycles at 5 C, offering a strategy for high-performance cathodes.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advancements in Battery Materials · Thermal Expansion and Ionic Conductivity · Transition Metal Oxide Nanomaterials
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References (10)
Show source-provided references
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