Enhanced electrochemical performance of high-density Al-substituted α-nickel hydroxide by a novel anion exchange method using NaCl solution

From National Research Council Canada

DOI	Resolve DOI: https://doi.org/10.1016/j.ijhydene.2014.11.150
Author	Search for: Li, Jing; Search for: Shangguan, Enbo; Search for: Nie, Mengzhen; Search for: Jin, Qingxiao; Search for: Zhao, Kang; Search for: Chang, Zhaorong; Search for: Yuan, Xiao-Zi¹; Search for: Wang, Haijiang¹
Name affiliation	National Research Council of Canada. Energy, Mining and Environment
Format	Text, Article
Subject	Aluminum; Cathodes; Cyclic voltammetry; Electric discharges; Infrared spectroscopy; Ions; Nickel; Scanning electron microscopy; Secondary batteries; X ray diffraction; Anion exchange; Anion-exchange methods; Cath-ode materials; Charge-discharge tests; Electrochemical activities; Electrochemical impedance; Electrochemical performance; Nickel hydroxides; Electrochemical impedance spectroscopy
Abstract	High-density Al-substituted α-nickel hydroxide with interlayer NO3 - for alkaline nickel-based rechargeable batteries has been synthesized using a polyacrylamide (PAM) assisted two-step drying method. In order to improve its electrochemical performance, Al-substituted α-Ni(OH)2 with interlayer NO3 - is modified by a simple anion exchange method using NaCl solution. The physical and electrochemical properties of the synthesized material are characterized by means of X-ray diffraction (XRD), infrared spectroscopy (IR), scanning electron microscopy (SEM), cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and a charge-discharge test. Compared with NO3 - intercalated α-Ni(OH)2 precursor, the resulting Cl- intercalated α-Ni(OH)2 samples possess more excellent electrochemical activities, including higher proton diffuse coefficient, lower electrochemical impedance, higher specific capacity, and better cyclic stability. Especially, it is also found that the introduction of Cl- can greatly accelerate the activation process of α-Ni(OH)2 electrodes.
Publication date	2015-01-30
In	International Journal of Hydrogen Energy 40, no. 4 (30 January 2015): 1852–1858.
Language	English
Peer reviewed	Yes
NPARC number	21275737
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Record identifier	05162147-859a-4b6d-ab55-e8755f8f21f1
Record created	2015-07-14
Record modified	2020-04-22

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