Author
I.S. Ahuja
Bio: I.S. Ahuja is an academic researcher from University of Strathclyde. The author has contributed to research in topics: Nickel & Cobalt. The author has an hindex of 3, co-authored 3 publications receiving 122 citations.
Topics: Nickel, Cobalt, Zinc, Copper, Transition metal
Papers
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TL;DR: Aniline complexes of manganese, cobalt, nickel, zinc, and cadmium chlorides, bromides, and iodides have been described in this paper, and the spectra are used to determine the probable co-ordination arrangement about the metal atoms in each complex.
62 citations
TL;DR: In this article, the spectra were used to determine the probable arrangement of ligands about the metal atoms in each complex and the ligands were then used to calculate the ligand arrangement.
49 citations
TL;DR: The complexes formed by aniline, o-, m-, and p-toluidine, and 3,4-, 2,5-, and 2,6-xylidine with manganese, iron, cobalt, nickel, copper, zinc, and cadmium(II) sulphates and nitrates have been examined spectroscopically as discussed by the authors.
Abstract: The complexes formed by aniline, o-, m-, and p-toluidine, and 3,4-, 2,5-, and 2,6-xylidine with manganese(II), iron(II), cobalt(II), nickel(II), copper(II), zinc(II), and cadmium(II) sulphates and nitrates have been prepared. The complexes have been examined spectroscopically, and possible structures are discussed.
11 citations
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TL;DR: In this article, a group of phenylamine-intercalated VOPO4·2H2O materials with varied interlayer spacing (14.8, 15.6 and 16.5 A) is synthesized respectively via a solvothermal method for the cathode of aqueous ZIBs.
Abstract: Layered vanadium phosphate (VOPO4·2H2O) is reported as a promising cathode material for rechargeable aqueous Zn2+ batteries (ZIBs) owing to its unique layered framework and high discharge plateau. However, its sluggish Zn2+ diffusion kinetics, low specific capacity and poor electrochemical stability remain major issues in battery application. In this work, a group of phenylamine (PA)–intercalated VOPO4·2H2O materials with varied interlayer spacing (14.8, 15.6 and 16.5 A) is synthesized respectively via a solvothermal method for the cathode of aqueous ZIBs. The specific capacity is quite dependent on the d-spacing in the PA–VOPO4·2H2O system following an approximate linear tendency, and the maximum interlayer spacing (16.5 A phase) results in a discharge capacity of 268.2 mA h g−1 at 0.1 A g−1 with a high discharge plateau of ∼1.3 V and an energy density of 328.5 W h kg−1. Both of the experimental data and DFT calculation identify that the optimal 16.5 A spacing can boost fast zinc-ion diffusion with an ultrahigh diffusion coefficient of ∼5.7 × 10−8 cm−2 s−1. The intercalation of PA molecules also significantly increases the hydrophobility in the aqueous electrolyte, resulting in the inhibition of the decomposition/dissolution of VOPO4·2H2O and remarkably improved cycling stability over 2000 cycles at 5.0 A g−1 with a capacity retention of ∼200 mA h g−1. Our study provides a feasible solution for the sluggish Zn2+ diffusion kinetics and poor cyclic stability, and also shows a clear understanding of the interlayer chemistry principle of layered phosphates toward high-performance zinc-ion batteries.
94 citations
60 citations
TL;DR: Vibrational spectra propose that the [ZnBr(2)(mMA)(2)] complex is in a tetrahedral environment around Zn(II) ion with C(2v) symmetry whereas Cd(II), Cd and Hg( II) complexes have 5-coordinate polymeric bromide bridged structures.
56 citations
TL;DR: In this article, aryl cross-couplings employing phenylboronic acid and a range of aryls halides were employed under mild conditions with high efficiency using the phosphine-free nickel complexes NiCl2(NEt3)2 and NiCl 2(bipy), both derived from NiCl1.
51 citations
TL;DR: In this article, the spectra were used to determine the probable arrangement of ligands about the metal atoms in each complex and the ligands were then used to calculate the ligand arrangement.
49 citations