Preparation of Porous Nano-nickel Oxide by Fast Precipitation and Its  Capacitance Characteristics

Chem. J. Chinese Universities

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Preparation of Porous Nano-nickel Oxide by Fast Precipitation and Its Capacitance Characteristics

ZHENG Ming-Bo¹; CAO Jie-Ming^1*; CHEN Yong-Ping¹; HE Ping¹;
TAO Jie¹; LIANG Yan-Yu²; LI Hu-Lin^1,2

1. College of Materials Science and Technology, Nanjing University of
Aeronautics and Astronautics, Nanjing 210016, China;
2. College of Chemistry and Chemical Engineering, Lanzhou University,
Lanzhou 730000, China

Received:2005-07-19 Revised:1900-01-01 Online:2006-06-10 Published:2006-06-10
Contact: CAO Jie-Ming

Abstract

Abstract: Ni(OH)₂ with a high specific surface area was synthesized by a facile fast precipitation method. Porous nano-NiO was obtained by calcining Ni(OH)₂ at 300 ℃. The NiO sample possesses a fine porous distribution at around 3-10 nm. The BET specific surface area and pore volume of this sample are 218.1 m²/g and 0.31 cm³/g, respectively. The electrochemical characteristics of the samples were studied by cyclic voltammetry and constant current charge/discharge. The specific capacitance of the NiO sample is about 255 F/g in the 2.0 mol/L KOH solution. The sample also has a fine electrochemical stability.

Key words: Supercapacitor, Fast precipitation, Nano nickel oxide, Porosing

CLC Number:

O646
O614

TrendMD:

ZHENG Ming-Bo¹; CAO Jie-Ming^1*; CHEN Yong-Ping¹; HE Ping¹;
TAO Jie¹; LIANG Yan-Yu²; LI Hu-Lin^1,2. Preparation of Porous Nano-nickel Oxide by Fast Precipitation and Its Capacitance Characteristics[J]. Chem. J. Chinese Universities, doi: .

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Preparation of Porous Nano-nickel Oxide by Fast Precipitation and Its Capacitance Characteristics

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