Abstract
Lithium-ion batteries are receiving considerable attention for large-scale energy-storage systems. However, to date the current cathode/anode system cannot satisfy safety, cost, and performance requirements for such applications. Here, a lithium-ion full battery based on the combination of a Li3 VO4 anode with a LiNi0.5 Mn1.5 O4 cathode is reported, which displays a better performance than existing systems. Carbon-coated Li3 VO4 spheres comprising nanoscale carbon-coating primary particles are synthesized by a morphology-inheritance route. The observed high capacity combined with excellent sample stability and high rate capability of carbon-coated Li3 VO4 spheres is superior to other insertion anode materials. A high-performance full lithium-ion battery is fabricated by using the carbon-coated Li3 VO4 spheres as the anode and LiNi0.5 Mn1.5 O4 spheres as the cathode; such a cell shows an estimated practical energy density of 205 W h kg-1 with greatly improved properties such as pronounced long-term cyclability, and rapid charge and discharge.
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