Morphology-dependent performance of nanostructured Ni3S2/Ni anode electrodes for high performance sodium ion batteries. (August 2016)

• Record Type: Journal Article
• Authors: Song, Xiaosheng; Li, Xifei; Bai, Zhimin; Yan, Bo; Li, Dejun; Sun, Xueliang
• Is Part Of: Nano energy. Volume 26(2016:Aug.)
• Page Start: 533
• Page End: 540
• Publication Date: 2016-08
• Subjects: Morphology evolution -- Nickel foam -- Nickel sulfide -- Sodium ion batteries; Nanoscience -- Periodicals; Nanotechnology -- Periodicals; Nanostructured materials -- Periodicals; Power resources -- Technological innovations -- Periodicals; Nanoscience; Nanostructured materials; Nanotechnology; Power resources -- Technological innovations; Periodicals; 621.042
• DOI: 10.1016/j.nanoen.2016.06.019
• Languages: English
• ISSNs: 2211-2855

Abstract

Abstract: Transition metal sulfides have been treated as promising materials for lithium-ion battery, and recently more and more attention has been paid to its applications in sodium-ion batteries. In our context, three Ni3 S2 nanostructures directly grown on Ni foam were successfully designed using a facile hydrothermal method. The influences of the morphology on the performance evolution for sodium-ion batteries were studied in detail. As a result, it was found that the initial drop, gradual increase, convex type decline and concave type decline in the performance evolutions were mainly controlled by R ct, R sf, pulverization, and internal stress, respectively. More importantly, our results indicated that the clustered network-like structure was beneficial for the cycling and rate performance, while the rod-like structure was suitable for the cyclic stability of these electrodes. Graphical abstract: Three Ni3 S2 /Ni nanostructures with different morphologies are successfully designed at selected reaction temperatures. Their electrochemical performances are compared and their special down and up performance evolutions are discussed systematically for the first time. Most importantly, the effect of morphology on the performance evolution is studied in detail. It is demonstrated that using materials with different morphologies have a bright prospect to improve the performance of these electrodes for sodium ion batteries. Highlights: Ni3 S2 /Ni nanostructures with different morphologies have been successfully designed. The clustered network-like electrode shows high performance for sodium ion batteries. The special performance evolutions of these electrodes were systematically studied. The influence of morphology on performance evolution was discussed in detail.