Tyagi, AnkitJoshi, Manish ChandraShah, AsmitaThakur, Vijay KumarGupta, Raju Kumar2019-02-222019-02-222019-02-14Tyagi A, Joshi MC, Shah A, Thakur VK and Gupta RK., Hydrothermally tailored three-dimensional Ni-V layered double hydroxide nanosheets as high-performance hybrid supercapacitor applications, ACS Omega, Volume 4, Issue 2, 2019, pp.3257-32672470-1343http://doi.org/10.1021/acsomega.8b03618https://dspace.lib.cranfield.ac.uk/handle/1826/13931Here, we report a facile and easily scalable hydrothermal synthetic strategy to synthesize Ni–V layered double hydroxide applications. NiV LDH nanosheets with varying Ni-to-V ratios were prepared. Three-dimensional curved nanosheets of Ni0.80V0.20 LDH showed better electrochemical performance compared to other synthesized NiV LDHs. The electrode coated with Ni0.80V0.20 LDH nanosheets in a three-electrode cell configuration showed excellent pseudocapacitive behavior, having a high specific capacity of 711 C g–1 (1581 F g–1) at a current density of 1 A g–1 in 2 M KOH. The material showed an excellent rate capability and retained the high specific capacity of 549 C g–1 (1220 F g–1) at a current density of 10 A g–1 and low internal resistances. Owing to its superior performance, Ni0.80V0.20 LDH nanosheets were used as positive electrode and commercial activated carbon was used as negative electrode for constructing a hybrid supercapacitor (HSC) device, having a working voltage of 1.5 V. The HSC device exhibited a high specific capacitance of 98 F g–1 at a current density of 1 A g–1. The HSC device showed a higher energy density of 30.6 Wh kg–1 at a power density of 0.78 kW kg–1 and maintained a high value of 24 Wh kg–1 when the power density was increased to 11.1 kW kg–1. The performance of NiV LDHs nanosheets indicates their great potential as low-cost electrode material for future energy-storage devicesenAttribution-NonCommercial 4.0 InternationalManufacturingcompositesArticle