Recently, LiNiCoMnO has drawn much attention because of its high energy density. Here, 3D-porous LiNiCoMnO and the one with residual carbon have been synthesized using a resorcinol-formaldehyde-assisted sol-gel approach. Scanning electron microscopy images verify that the synthesized LiNiCoMnO possesses a 3D-porous morphology. X-ray photoelectron spectroscopy analysis and transmission electron microscopy-mapping images indicate the existence of residual carbon in the secondary particle of 3D-porous LiNiCoMnO. Furthermore, 3D-porous LiNiCoMnO with residual carbon exhibits outstanding electrochemical properties. At a current density of 1900 mA g, the 3D-porous LiNiCoMnO with residual carbon can still deliver a reversible capacity of 113 . Moreover, after 150 cycles at 0.2 C, the capacity retention of 3D-porous LiNiCoMnO with residual carbon reaches to 95%. The excellent electrochemical properties can be ascribed to the unique 3D-porous morphology and residual carbon in the secondary particle.
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| http://dx.doi.org/10.1021/acsami.8b17800 | DOI Listing |
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