Nanoengineered Skeleton‐surface of Nickel Foam with Additional Dual Functions of Rate‐capability Promotion and Cycling‐life Stabilization for Nickel Sulfide Electrodes,ChemNanoMat

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Nanoengineered Skeleton‐surface of Nickel Foam with Additional Dual Functions of Rate‐capability Promotion and Cycling‐life Stabilization for Nickel Sulfide Electrodes
ChemNanoMat ( IF 2.6 ) Pub Date : 2020-07-30 , DOI: 10.1002/cnma.202000296
Yanhong Li _{1,

2} , Yuanyuan Liu ₁ , Jing Li ₁ , Meiri Wang ₁ , Wei Wang ₁ , Hongtao Cui ₁

Affiliation

Battery‐type electrode materials such as NiS applied in Faradaic supercapacitors (FSs) could display poor performance with regard to rate‐capability and cycling stability due to the inappropriate texture of the electrodes. Numerous works focussed on tuning the microscopic structure of electrode materials, but neglected the influence of the microscopic structure of current collectors such as nickel foam on the electrochemical performance of FSs. In this work, the performance of NiS is associated with the microscopic structure of nickel foams by decorating the 2D porous nanostructured NiS on a 2D nanoengineered skeleton‐surface of nickel foams. It could be inferred from the characterization results that the synergistic effect of both 2D nanostructured NiS and nickel foam significantly promotes the rate‐capability and stabilizes the performance of NiS. Asymmetric supercapacitors using the dually nanostructured NiS/nickel foam as positive electrode and AC as negative electrode exhibit both high energy and high power densities.

中文翻译：

镍泡沫的纳米工程化骨架表面，具有附加的速率能力提升和硫化镍电极循环寿命稳定化双重功能

法拉第超级电容器（FSs）中使用的电池型电极材料（例如NiS）在速率能力和循环稳定性方面表现不佳，这是由于电极的质地不适当。许多工作集中在调整电极材料的微观结构上，而忽略了诸如镍泡沫之类的集电器的微观结构对FSs电化学性能的影响。在这项工作中，通过在二维纳米工程镍泡沫骨架表面上装饰二维多孔纳米结构NiS，NiS的性能与泡沫镍的微观结构相关联。从表征结果可以推断，二维纳米结构的NiS和泡沫镍的协同作用显着提高了速率能力并稳定了NiS的性能。使用双重纳米结构的NiS /镍泡沫作为正电极，使用AC作为负电极的不对称超级电容器具有高能量密度和高功率密度。

更新日期：2020-07-30

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