TY - JOUR
T1 - Structural characteristics of nickel hydroxide synthesized by a chemical precipitation route under different pH values
AU - Song, Quansheng
AU - Tang, Zhiyuan
AU - Guo, Hetong
AU - Chan, S. L.I.
PY - 2002/11/14
Y1 - 2002/11/14
N2 - The effects of precipitation pH values on the microstructural characteristics of nickel hydroxide materials synthesized by a chemical precipitation method have been studied. The relationship between structural characteristics and electrochemical activity of nickel hydroxide was also examined. The structural characteristics of the synthesized β-Ni(OH)2, such as degree of crystallinity, crystalline lattice disorders, crystallite size and crystal growth orientation were strongly related to the pH values of the chemical precipitation reaction. The amounts of SO42-, CO32- and H2O adsorbed in crystals, and the thermal stability of the β-Ni(OH)2 also depended on the pH. Under relatively high pH values, the synthesized nickel hydroxide materials possessed a reduced crystallite size and lower thermal stability, more crystalline defects and a higher Ni composition. All these characteristics were likely to improve the electrochemical activity of nickel hydroxide.
AB - The effects of precipitation pH values on the microstructural characteristics of nickel hydroxide materials synthesized by a chemical precipitation method have been studied. The relationship between structural characteristics and electrochemical activity of nickel hydroxide was also examined. The structural characteristics of the synthesized β-Ni(OH)2, such as degree of crystallinity, crystalline lattice disorders, crystallite size and crystal growth orientation were strongly related to the pH values of the chemical precipitation reaction. The amounts of SO42-, CO32- and H2O adsorbed in crystals, and the thermal stability of the β-Ni(OH)2 also depended on the pH. Under relatively high pH values, the synthesized nickel hydroxide materials possessed a reduced crystallite size and lower thermal stability, more crystalline defects and a higher Ni composition. All these characteristics were likely to improve the electrochemical activity of nickel hydroxide.
KW - Alkaline storage batteries
KW - Chemical precipitation reaction
KW - Nickel hydroxide
KW - Structural characteristics
UR - http://www.scopus.com/inward/record.url?scp=0037079081&partnerID=8YFLogxK
U2 - 10.1016/S0378-7753(02)00396-8
DO - 10.1016/S0378-7753(02)00396-8
M3 - 期刊論文
AN - SCOPUS:0037079081
SN - 0378-7753
VL - 112
SP - 428
EP - 434
JO - Journal of Power Sources
JF - Journal of Power Sources
IS - 2
ER -
