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A novel composite, functionalized N-doped hollow carbon spheres (F-NHCS), is proposed as cathode host for improving the cycle stability and rate capability of a Li-S battery, which involves the functionalization of NHCS with oxygen-containing groups. The high electronic conductivity and abundant oxygen-containing functional groups of F-NHCS can not only be served as the conductive matrix for loading...
A novel gel polymer electrolyte (GPE) based on an electrospun polymer membrane of polyimide (PI) activating with poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) and further coating with nano-Al2O3 was prepared, and its performance for lithium-sulfur (Li-S) cell was investigated. It is found that the Li-S cell using the new GPE enabled achieving a stable discharge capacity of 820 mAh g−1...
LiNi0.5Mn1.5O4 is synthesized by a sol–gel method, and its performance as cathode of high-voltage lithium-ion battery is improved by using poly(vinylidene fluoride-co-hexafluoropropene)-based gel polymer electrolyte (GPE). The results obtained from charge/discharge tests demonstrate that the cyclic stability of LiNi0.5Mn1.5O4 is significantly improved by using the GPE, especially at elevated temperature...
Carbon-coated LiNi 0.5 Mn 1.5 O 4 cathode was prepared using phenolic resin as a carbon precursor. The morphology and structure of the prepared samples were characterized by powder X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and thermogravimetry, and its performance as cathode of lithium ion battery was investigated...
A novel carbon-sulfur composite, mesoporous carbon-sulfur, was developed as cathode of lithium/sulfur battery. The mesoporous carbon was prepared with sucrose as carbon precursor and calcium carbonate nanoparticles as pore producer. The sulfur was encapsulated in the mesoporous carbon via a simple chemical deposition strategy and a subsequent low-temperature thermal treatment process. The morphology...
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