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  • Title: Urchin like inverse spinel manganese doped NiCo2O4 microspheres as high performances anode for lithium-ion batteries.
    Author: Liang Z, Tu H, Kong Z, Yao X, Xu D, Liu S, Shao Y, Wu Y, Hao X.
    Journal: J Colloid Interface Sci; 2022 Jun 15; 616():509-519. PubMed ID: 35228047.
    Abstract:
    The ternary transition metal oxides are promising anode material for lithium-ion batteries (LIBs). However, their practical applications are greatly hindered by the poor conductivity and huge volume changes. To solve the issues, urchin-like inverse spinel manganese (Mn) doped NiCo2O4 hierarchical microspheres were fabricated through a facile hydrothermal approach and subsequent annealing treatment. The as-obtained Mn-doped NiCo2O4 hold microsphere and sharp fiber-shaped needle multilevel nanoscale architecture, which effectively shortened Li ions (Li+) transmission path and improved the conductivity. In addition, the hierarchical urchin-like Mn-doped NiCo2O4 synthesized at annealing temperature (600 °C) manifested a larger capacity and better cycling performance by controlling the crystallinities and morphologies. As expected, it displays an outstanding cycling performance with a reversible capacity of about 945 mAh g-1 after 500 cycles at 2000 mA g-1. The kinetic analysis and galvanostatic intermittent titration technique (GITT) testing also verifies the superior pseudocapacitance contribution and fast elevated ion migration of Li+. Our work provides a promising design to develop suitable anode materials based on transition metal oxides for high-performance LIBs.
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