Rapid in situ growth of β-Ni(OH)₂ nanosheet arrays on nickel foam as an integrated electrode for supercapacitors exhibiting high energy density

Abstract

A rapid in situ method was employed to synthesize the β-Ni(OH)2@NF integrated electrode for a high performance ASC device.

Laser-Induced Ni Foil-Supported NiO@Ni(OH)2 Hierarchical Structures as Advanced Cathodes for Ultrahigh Performance Nickel–Zinc Batteries

“…The Ni–O–Ni peak at a binding energy of 530.4 eV, only existing in the NN@LTNF100 sample, was ascribed to the divalent nickel oxide, again proving the formation of NiO during the laser ablation process. The peak located at 531.1 eV was consistent with the Ni–O–H bond of nickel hydroxide synthesized during the process of chemical bath deposition . Apparently, the Ni–O–H intensity of the NN@LTNF100 sample was substantially higher than that of the NN@NF sample, suggesting that femtosecond laser ablation could contribute to more mass loading of nickel hydroxide after the chemical bath deposition.…”

Rational Design and in-situ Synthesis of Ultra-Thin β-Ni(OH)2 Nanoplates for High Performance All-Solid-State Flexible Supercapacitors

“…Considering that there is a little error in the AFM test, the thickness distribution is shown in Supplementary Figure 1. It can be seen that the thickness of β-Ni(OH) 2 nanoplate is about 2.4 ± 0.2 nm, which is much thinner than those of β-Ni(OH) 2 in previous reports (Lu et al, 2011;Li et al, 2020). Figures 2E,F shows the XPS curves of Ni and O elements in Ni(OH) 2 nanoplate.…”

Highly Synergistic Co3+ and Pyridinic‐N‐Rich Bifunctional Electrocatalyst for Ultra‐Low Energy‐Driven Effective Hydrogen Production and Urea Oxidation

“…The crystalline phases of Ni(OH) 2 /NF at 19.6° (001), 33.5° (100), 39.1° (101), 51.8° (102), 60.1° (110), and 63.9° (111) are assigned as per Ni(OH) 2 (JCPDS card no. 14-0117), [51] and the 2θ values of 44.5°, 51.8°, and 76.4° are ascribed to (111), (200), and (220) crystalline phases of Ni foam (JCPDS card no. 04-0850) [52,53] (Figure S7, Supporting Information).…”

“…Electrodeposition of Ni(OH) 2 was performed at 0.40 V in 1 m KOH through chronoamperometry for 30 s using a three-electrode system containing a Pt coil (counter electrode), a Ag/AgCl (reference electrode), and an acid-treated NF (working electrode). [51] Preparation of Co MOF/Ni(OH) 2 /NF: The synthesis of the Co MOF was adapted from a previously reported procedure. As the first step in typical Co MOF synthesis, cobalt acetate tetrahydrate (249.1 mg) was uniformly dispersed in dimethylformamide (DMF, 10 mL) (Figure 1b).…”

“…Electrodeposition of Ni(OH) 2 was performed at 0.40 V in 1 m KOH through chronoamperometry for 30 s using a three‐electrode system containing a Pt coil (counter electrode), a Ag/AgCl (reference electrode), and an acid‐treated NF (working electrode). [ 51 ]…”