Optimization of battery life and capacity by setting dense mesopores on the surface of nanosheets towards electrode

Nanosheets with mesopores on the surface have been prepared using molybdenum trioxide (α-MoO3). The effect of mesopores on the performance of the electrode remains elusive. The MoO3 nanosheets obtained in this study exhibited great battery performance, including good capacity, prolonged recycling life cycles, and excellent rate performance; e.g., 780 mAh/g when charged under a super high current-density of 1000 mA/g. These nanosheets demonstrated excellent stability, maintaining a capacity of 1189 mAh/g after 20 cycles, and 1075 mAh/g after 50 cycles; thus preventing the capacity to decrease to values under the scanning rate of 100 mA/g. These high-purity MoO3 nanosheets are well-ordered and have dense mesopores on the surface; these micropores contribute to the excellent electrode performance of the host electrode materials; the performance parameters include prolonged battery life and capacity. Setting mesopores or active sites on the electrode surface can be an alternative way to obtain stable electrodes in the future.