A Carbon/Titanium Vanadium Nitride Composite for Lithium Storage

摘要

capacity fade. Among a variety of options, carbonaceous materials are prom-ising candidates. Graphite is widely used nowadays as anodes in commercial cells, nevertheless its capacity is re-stricted to 372 mAhg[1]1(maximum stage by forming LiC6). Therefore, extensive research is currently focusing on the elec-trochemical performance of carbon-based composites which promise advantages for lithium-storage applications owing to their intrinsic characteristics possessing a vast number of active sites and offering presuppositions for a fast electronic and ionic transporting network. On the other hand, low cost, high molar density and superior chemical resistance of the transition metal nitrides render them desirable candidates for the next-generation of lithium batteries and supercapacitors. Among them, TiN was reported to possess a good electronic conductivity but with minor capacity and hence usually used as current collector, whereas VN was reported to exhibit a larger capacity for thin film lithium battery and supercapacitor applications despite poor electronic conductivity.