Limiting the shuttle effect of polysulfides is an important means to realizing high energy density lithium-sulfur batteries (Li-S). In this study, an efficient electrocatalyst (CNFs@NiFeN) is synthesized by anchoring NiFeN in the carbon nanofibers (CNFs). The CNFs@NiFeN shows electrocatalytic activity and enhances the conversion of polysulfides. After assembling a battery, a high initial capacity (1452 mA h g) and favorable long-time cycling stability (100 cycles) with a capacity retention rate of 83% are obtained by the electrocatalysis of NiFeN. Compared with unmodified CNFs, the cycling stability of CNFs@NiFeN can be greatly improved. The catalytic mechanism is further deduced by X-ray photoelectron spectroscopy (XPS). Our work will inspire the rational design of CNFs@support hybrids for various electrocatalysis applications.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8982135 | PMC |
| http://dx.doi.org/10.1039/d1ra09041k | DOI Listing |
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