Electronic Materials Research Group, Hyosung Corporation, Gyeonggi-do (Republic of Korea).
ChemSusChem. 2015 Apr 24;8(8):1484-91. doi: 10.1002/cssc.201500200. Epub 2015 Apr 2.
Hybrid nanostructures based on graphene and metal oxides hold great potential for use in high-performance electrode materials for next-generation lithium-ion batteries. Herein, a new strategy to fabricate sequentially stacked α-MnO2 /reduced graphene oxide composites driven by surface-charge-induced mutual electrostatic interactions is proposed. The resultant composite anode exhibits an excellent reversible charge/discharge capacity as high as 1100 mA h g(-1) without any traceable capacity fading, even after 100 cycles, which leads to a high rate capability electrode performance for lithium ion batteries. Thus, the proposed synthetic procedures guarantee a synergistic effect of multidimensional nanoscale media between one (metal oxide nanowire) and two dimensions (graphene sheet) for superior energy-storage electrodes.
基于石墨烯和金属氧化物的杂化纳米结构在下一代锂离子电池的高性能电极材料中具有很大的应用潜力。在此，提出了一种新的策略，通过表面电荷诱导的相互静电相互作用来制备顺序堆叠的α-MnO2/还原氧化石墨烯复合材料。所得复合阳极具有优异的可逆充放电容量，高达 1100 mA h g-1，没有任何可检测的容量衰减，即使在 100 次循环后，这导致了锂离子电池的高倍率性能电极性能。因此，所提出的合成程序保证了一维（金属氧化物纳米线）和二维（石墨烯片）之间的多维纳米级介质的协同效应，用于优异的储能电极。
