Nanometer nickel hydroxide with three kinds of nickel sources were synthesized by ultrasonic-assisted precipitation under single, double and no doping condition. The effect of three anions (NO3-, Cl-, SO42-) which comes from nickel sources on the crystal structure and stability of samples were investigated. The results indicate that the larger ion radius SO42- is more in favor of the formation of α-Ni(OH)2 in the case of undoping. In the single doped Co samples(Ni2+:Co2+=1:0.20), NO3- anion is not only conducive to form α-Ni(OH)2, but also can keep high stability of α-Ni(OH)2 in alkali solution. When co-doped Co/Cu(Ni2+:Co2+:Cu2+=1:0.15:0.05), the samples which were prepared using three nickel sources are all pure α-Ni(OH)2 structures, however, the stability of the nickel nitrate doped α-Ni(OH)2 in alkali solution is higher, which is using Ni(NO3)2 as nickel source, NiCl2 is lower, NiSO4 is the lowest. It can be concluded that the structure and stability of α-Ni(OH)2 is not only related to doping condition, but also related with anions.
LIU Chang-jiu, WU Hua-bin, LI Yan-wei, et al Investigations on electrochemical performance of La(Ⅲ) and Sr(Ⅱ) codoped amorphous nickel hydroxide[J]. Journal of Materials Engineering, 2008, (10): 68- 75.
JAYASHREE R S, VISHNU K P Layered double hydroxides of Ni with Cr and Mn as candidate electrode materials for alkaline secondary cells[J]. Journal of Power Sources, 2002, 107 (1): 120- 124.
WU Shang-gai, ZHU Yan-juan, ZHANG Zhong-ju, et al Effect of supersonic power and pH value on the structure and electrochemical performance of Y doped nano-Ni(OH)2[J]. Journal of Materials Engineering, 2011, (6): 27- 31.
ZHANG H B, LIU H S, CAO X J, et al Preparation and properties of the aluminum-substituted α-Ni(OH)2[J]. Materials Chemistry and Physics, 2003, 79 (1): 37- 42.
BAO J, ZHU Y J, ZHANG Z J, et al Structure and electrochemical properties of nanometer Cu substituted α-nickel hydroxide[J]. Materials Research Bulletin, 2013, 48 (2): 422- 428.
DIXIT M, KAMATH P V, GOPALAKRISHNAN J Zinc-substituted α-nickel hydroxide as an electrode material for alkaline secondary cells[J]. Journal of the Electrochemical Society, 1999, 146 (1): 79- 82.
ZHANG Hong-bing, PU Tan, LI Dao-huo Research on nanostructure Al3+, Zn2+ instituted Ni(OH)2 electrode materials[J]. Chinese Journal of Power Sources, 2004, 28 (5): 276- 281.
DAI J X, LI SAM F Y, XIAO T D, et al Structural stability of aluminum stabilized alpha nickel hydroxide as a positive electrode material for alkaline secondary batteries[J]. Journal of Power Sources, 2000, 89 (1): 40- 45.
WU M Y, WANG J M, ZHANG J Q, et al Structure and electrochemical performance of Mn-substituted nickel hydroxide[J]. Acta Physicochimica Sinica, 2005, 21 (5): 523- 527.
ZHANG Z J, ZHU Y J, BAO J, et al Electrochemical performance of multi-element doped α-nickel hydroxide prepared by supersonic co-precipitation method[J]. Journal of Alloys and Compounds, 2011, 509 (25): 7034- 7037.
XU Qing-sheng, ZHU Yan-juan, ZHAO Ru-dong, et al Effect of preparation conditions on the phase of Ni(OH)2[J]. Journal of Synthetic Crystals, 2012, 41 (5): 1232- 1236.
LEE J W, CHOI W C, KIM J D Size-controlled layered zinc hydroxide intercalated with dodecyl sulfate: effect of alcohol type on dodecyl sulfate template[J]. Cryst Eng Comm, 2010, 12 (10): 3249- 3254.
SUN D, ZHANG J L, REN H J, et al Influence of OH- and SO42- anions on morphologies of the nanosized nickel hydroxide[J]. The Journal of Physical Chemistry C, 2010, 114 (28): 12110- 12116.
SONG X F, GAO L Facile synthesis and hierarchical assembly of hollow nickel oxide architectures bearing enhanced photocatalytic properties[J]. The Journal of Physical Chemistry C, 2008, 112 (39): 15299- 15305.
翁诗甫. 傅里叶变换红外光谱仪[M]. 北京: 化学工业出版社, 2005.283-286.
WENG Shi-fu. Fourier Transform Infrared Spectroscopy[M]. Beijing: Chemical Industry Press, 2005.283-286.
KOAOVA N V, DEVYATKINA E T, KAICHEV V V Mixed layered Ni-Mn-Co hydroxides: crystal structure, electronic state of ions, and thermal decomposition[J]. Journal of Power Sources, 2007, 174 (2): 735- 740.