3D NiCo2S4 nanorod arrays as electrode materials for electrochemical energy storage application. Issue 16 (December 2016)

• Record Type: Journal Article
• Authors: Ren, Qing-Qing; Liu, Chang; Wang, Zhen-Bo; Ke, Ke; Zhang, Si-Wen; Yin, Bo-Si
• Is Part Of: Ceramics international. Volume 42:Issue 16(2016)
• Page Start: 18173
• Page End: 18180
• Publication Date: 2016-12
• Subjects: NiCo2S4 -- Nanorod array -- Electrode materials -- Electrochemical performance; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2016.08.133
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: It is essential to develop new electrode materials for electrochemical energy storage to meet the increasing energy demands, reduce environmental pollution and develop low-carbon economy. In this work, binder-free NiCo2 S4 nanorod arrays (NCS NRAs) on nickel foam electrodes are prepared by an easy and low energy-consuming route. The electrodes exhibit superior electrochemical properties both for alkaline and Li-ion batteries. In 3 M KOH electrolyte, the NCS NRAs achieve a specific capacity of 240.5 mA h g −1 at a current density of 0.2 A g −1, and 105.7 mA h g −1 after 1500 cycles at the current density of 5 A g −1 with capacity retention of 87.3%. As the anode for LIBs, it shows a high initial capacity of 1760.7 mA h g −1 at the current density of 100 mA g −1, corresponding coulombic efficiency of 87.6%, and a rate capacity of 945 mA h g −1 when the current density is improved 10 times. Hence, the NiCo2 S4 nanorod arrays are promised as electrode materials with competitive performance.