Synthesis, characterization, and electrochemical properties of Ni(OH)2/ultra-stable Y zeolite composite

• Published in: Journal of materials science Vol. 44; no. 16; pp. 4466 - 4471
• Main Authors: Lang, Jun-Wei, Kong, Ling-Bin, Wu, Wei-Jin, Luo, Yong-Chun, Kang, Long
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.08.2009; Springer Nature B.V
• Subjects: Ammonium chloride; Characterization and Evaluation of Materials; Chemical precipitation; Chemical synthesis; Classical Mechanics; Crystallography and Scattering Methods; Current density; Diffraction; Electrochemical analysis; Electrode materials; Electrodes; Hydroxides; Materials Science; Nickel; Nickel compounds; Organic chemistry; Polymer Sciences; Solid Mechanics; Storage batteries; Transmission electron microscopy; Whiskers (metals); X-ray diffraction; Yttrium; Zeolites; Electrochemical Capacitor; Specific Capacitance; Discharge Capacity; Secondary Batterie; Nickel Hydroxide
• ISSN: 0022-2461; 1573-4803
• DOI: 10.1007/s10853-009-3677-3

A novel composite of Ni(OH) 2 /ultra-stable Y zeolite materials was synthesized by an improved chemical precipitation method, which used the ultra-stable Y zeolite as the template. The Ni(OH) 2 /ultra-stable Y zeolite composite and its microstructure were characterized by X-ray diffraction measurements and transmission electron microscopy. Electrochemical studies were carried out using cyclic voltammetry, chronopotentiometry technology and ac impedance spectroscopy, respectively. The result shows that the loose-packed whisker Ni(OH) 2 phase has profound impacts on electrode performance at very high power output. A maximum discharge capacity of 185.6 mA-h/g (1670 F/g), or 371 mA-h/g (3340 F/g) after correcting for weight percent of nickel hydroxide phase at the current density of 625 mA/g could be achieved in a half-cell setup configuration for the Ni(OH) 2 /ultra-stable Y zeolite electrode, suggesting its potential application in electrode material for secondary batteries and electrochemical capacitors. Furthermore, the effect of NH 4 Cl concentration on the electrochemical properties characteristics has also been systemically explored.