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Feather-like NiCo 2 O 4 self-assemble from porous nanowires as binder-free electrodes for low charge transfer resistance
Frontiers of Materials Science ( IF 2.7 ) Pub Date : 2020-11-09 , DOI: 10.1007/s11706-020-0528-2
Dandan Han , Jinhe Wei , Shanshan Wang , Yifan Pan , Junli Xue , Yen Wei

The unique feather-like arrays composing of ultrathin secondary nanowires are fabricated on nickel foam (NF) through a facile hydrothermal strategy. Thus, the enhancement of electrochemical properties especially the low charge transfer resistance strongly depends on more active sites and porosity of the morphology. Benefiting from the unique structure, the optimized NiCo2O4 electrode delivers a significantly lower charge transfer resistance of 0.32 Ω and a high specific capacitance of 450 F·g−1 at 0.5 A·g−1, as well as a superior cycling stability of 139.6% capacitance retention. The improvement of the electrochemical energy storage property proves the potential of the fabrication of various binary metal oxide electrodes for applications in the electrochemical energy field.



中文翻译:

似羽毛的NiCo 2 O 4由多孔纳米线自组装为无粘合剂电极,可降低电荷转移电阻

通过便捷的水热策略,在泡沫镍(NF)上制造了由超细次级纳米线组成的独特的羽毛状阵列。因此,电化学性能的增强,特别是低电荷转移阻力的增强,在很大程度上取决于更多的活性部位和形态的孔隙率。得益于其独特的结构,经过优化的NiCo 2 O 4电极在0.5 A·g -1时可显着降低0.32Ω的电荷转移电阻和450 F·g -1的高比电容,以及高达139.6%的电容保持率的出色循环稳定性。电化学储能性能的改善证明了制造各种二元金属氧化物电极用于电化学能领域的潜力。

更新日期:2020-11-09
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