http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Fabrication of β-Ni(OH)2 ∥ γ-Fe2O3 nanostructures for high-performance asymmetric supercapacitors
Sabari Arul, N.,In Han, Jeong,Chen, Pao Chi Springer-Verlag 2018 Journal of solid state electrochemistry Vol.22 No.1
<P>In this study, we have fabricated a novel beta-Ni(OH)(2) hierarchical nanostructures (HNs) a gamma-Fe2O3 nanohexagons (NHs) and investigated their potential as electrode material for high-performance asymmetric supercapacitor. The X-ray diffraction and transmission electron microscopy analyses confirmed the presence of beta-Ni(OH)(2) and gamma-Fe2O3 in the obtained products. The electrochemical performance of single electrodes containing beta-Ni(OH)(2) HNs and gamma-Fe2O3 NHs supported on the nickel foam exhibited high specific capacitances of 3232.08 and 1800.06 F g(-1) at the current densities of 3 and 13 mA cm(-2), respectively. As a result, we have fabricated an asymmetric supercapacitor device using beta-Ni(OH)(2) HN gamma-Fe2O3 NH electrodes which exhibited high energy density of 99.28 W h kg(-1) at a power density of 1599.85 W kg(-1), with excellent cycling stability of 89.3% after 5000 cycles. Our results demonstrated that the beta-Ni(OH)(2) HN gamma-Fe2O3 NH electrode material could serve as a potential candidate for energy storage applications.</P>
Arul, N. Sabari,Han, Jeong In,Mangalaraj, D. Springer-Verlag 2018 Journal of materials science Materials in electron Vol.29 No.2
<P>We report a cost-effective, facile chemical synthesis of gamma-manganese sulfide (MnS) nanoparticles (NPs) and investigated its structural, morphology and electrochemical properties. For the first time, we have attempted to exploit a novel highly flexible electrodes for supercapacitor application via depositing the synthesized MnS NPs on home-made graphite/scotch tape, as binder-free flexible conducting electrode which demonstrated a specific capacitance of 112 F g(-1) at a scan rate of 5 mV s(-1), with a cyclic stability of 93% after 2000 cycles. The results showed that the conducting flexible electrodes might be an ideal choice for cost-effective, next-generation high-performance supercapacitor application.</P>
Facile synthesis of ZnS/MnS nanocomposites for supercapacitor applications
Arul, N. Sabari,Cavalcante, L. S.,In Han, Jeong Springer-Verlag 2018 Journal of solid state electrochemistry Vol.22 No.1
<P>In this study, we have reported a facile fabrication of pristine zinc sulfide (ZnS), manganese sulfide (MnS), and ZnS/MnS nanocomposites (NCs) via cost-effective chemical precipitation method for electrochemical supercapacitor applications. The XRD, HR-TEM, and XPS analyses confirm the formation of ZnS/MnS NCs in the synthesized product. The electrochemical properties of ZnS/MnS NC electrode showed high specific capacitance of 884 F g(-1) at a scan rate of 2 mV s(-1). Besides, we have fabricated a symmetric supercapacitor using ZnS/MnS NCsCZnS/MnS NCs which exhibited a maximum energy density of 91 Wh kg(-1) at a power density of 7.78 kW kg(-1) with stable capacitance retention after 5000 cycles. Thus, the synergetic effect generated from the wurtzite-type hexagonal structure of ZnS/MnS leads to superior electron/ion transfer resulting in the enhanced electrochemical performance of the ZnS/MnS NCs which might be an ideal choice for cost-effective, high-performance supercapacitor applications.</P>
Arul, N. Sabari,Mangalaraj, D.,Ramachandran, R.,Grace, A. Nirmala,Han, Jeong In The Royal Society of Chemistry 2015 Journal of materials chemistry. A, Materials for e Vol.3 No.29
<▼1><P>Hybrid CeO2/Fe2O3 composite nanospindles (CNSs) are synthesized by a simple and cost effective co-precipitation method, utilized for wastewater treatment and energy storage applications.</P></▼1><▼2><P>Hybrid CeO2/Fe2O3 composite nanospindles (CNSs) are synthesized by a simple and cost effective co-precipitation method. CeO2/Fe2O3 CNSs used as an efficient recyclable photocatalyst for degrading Eosin Yellow (EY) dye under visible light irradiation possess a high degradation rate of 98% after 25 min. The estimated electrical energy efficiency of CeO2/Fe2O3 CNSs shows the consumption of less energy (6.588 kW h m<SUP>−3</SUP> per order) in degrading EY. Besides, the CeO2/Fe2O3 CNS exhibits a specific capacitance of 142.6 F g<SUP>−1</SUP> at a scan rate of 5 mV s<SUP>−1</SUP>. Moreover, the composite displays an excellent capacitance retention of 94.8% after 1000 cycles. This newly designed CeO2/Fe2O3 CNS with enhanced visible light-driven photocatalytic activity and good supercapacitive cycling stability has great potential for use in wastewater treatment and energy storage applications.</P></▼2>