부산대학교 도서관

In this paper, Ni.sub.2P nanoparticles is incorporated onto the graphene & carbon nanotubes composite (Ni.sub.2P NPs/rGO & CNTs) to form flexible free-standing intertwining network film anodes for improving the cycle-life of sodium-ion batteries (SIBs). Benefited from the volume accommodation by this Ni.sub.2P NPs/rGO & CNTs structure and its excellent electronic conductive network along with high mechanical strength, such an anode-based SIB shows a superior capacity retention with a stable and long cycle-life at high current densities. For Ni.sub.2P NPs/rGO & CNTs electrode, it remains a capacity of 224 mAh g.sup.-1 after 100 cycles, at a high current density of 0.5 A g.sup.-1, the Ni.sub.2P NPs/rGO & CNTs can still maintain a stable reversible capacity of ~ 150 mAh g.sup.-1 after 500 cycles, after cycling at a rate as high as 1 A g.sup.-1, the reversible capacity of the Ni.sub.2P NPs/rGO/CNT can still sustain stable capacities at 91 mAh g.sup.-1 after 2000 cycles, respectively. Even at 5 A g.sup.-1, it still exhibits a high rate capacity of 65 mAh g.sup.-1, thus exhibiting an excellent sodium storage kinetics.
Author(s): Lingyu Zhao [sup.1] [sup.2], Linlin Wang [sup.2], Suyuan Zeng [sup.3], Qi Liu [sup.1] [sup.2], Wei Yan [sup.2], Minmin Liu [sup.2], Huaxu Gong [sup.4], Jiujun Zhang [sup.2] Author Affiliations: (1) [...]