Yang Jing, Tan Rou, Li Di, Ma Jianmin, Duan Xiaochuan
Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen, 361005, P. R. China.
Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, P. R. China.
Chemistry. 2020 Apr 24;26(24):5341-5346. doi: 10.1002/chem.201905140. Epub 2020 Mar 24.
In pursuit of high-performance cathode materials for lithium-ion batteries with high energy and power densities, porous LiFe Mn PO /CNF free-standing electrodes have been successfully prepared through a facile ionic liquid (IL) assisted electrospinning method. Owing to the hierarchical porosity and N-doped carbon layer derived from the ionic liquid, the resulting electrodes exhibited superior electrochemical performances with an improvement of conductivity and pseudocapacitive contribution, delivering a discharge capability of 162.7, 133.5, 114.5, and 102.6 mAh g at the current rates of 0.1, 1, 5, and 10 C, respectively. It is highly expected that this facile IL-assisted electrospinning method will lead to further developments for other phosphate-based free-standing electrodes, which offers a new route in designing polyanionic cathodes for high-performance Li-ion batteries.
为了寻求具有高能量和功率密度的锂离子电池高性能阴极材料，通过一种简便的离子液体（IL）辅助静电纺丝方法成功制备了多孔LiFeMnPO/CNF自支撑电极。由于离子液体产生的分级孔隙率和N掺杂碳层，所得电极表现出优异的电化学性能，导电性和赝电容贡献得到改善，在0.1、1、5和10C的电流速率下分别具有162.7、133.5、114.5和102.6 mAh g的放电容量。高度期望这种简便的IL辅助静电纺丝方法将推动其他基于磷酸盐的自支撑电极的进一步发展，这为设计用于高性能锂离子电池的聚阴离子阴极提供了一条新途径。
