Structural and Electrochemical Performance of Additives-doped a-Ni（OH）2
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2012年第3期
论文作者：张仲举 朱燕娟
文章页码：538 - 541
摘 要：The additives-doped α-nickel hydroxides were prepared by supersonic co-precipitation method. The crystal structure and grain size of the prepared samples were characterized by X-ray diffraction （XRD） and Particle size distribution （PSD）, respectively. Cyclic voltammetry （CV） tests show that Al-Co-Y doped Ni（OH）2 has better reaction reversibility, higher proton diffusion coefficient than those of Al-Co doped Ni（OH）2. Al-Co-Y doped Ni（OH）2 also has lower charge-transfer resistance as shown by electrochemical impedance spectroscopy （EIS）. Charge/discharge tests show that the discharge capacity of Al-Co-Y doped Ni（OH）2 reaches 328 mAh/g at 0.2 C and 306 mAh/g at 0.5 C, while Al-Co doped Ni（OH）2 can only discharge a capacity of 308 mAh/g at 0.2 C and 267 mAh/g at 0.5 C.
张仲举，朱燕娟
School of Physics and Optoelectronic Engineering, Guangdong University of Technology
摘 要：The additives-doped α-nickel hydroxides were prepared by supersonic co-precipitation method. The crystal structure and grain size of the prepared samples were characterized by X-ray diffraction （XRD） and Particle size distribution （PSD）, respectively. Cyclic voltammetry （CV） tests show that Al-Co-Y doped Ni（OH）2 has better reaction reversibility, higher proton diffusion coefficient than those of Al-Co doped Ni（OH）2. Al-Co-Y doped Ni（OH）2 also has lower charge-transfer resistance as shown by electrochemical impedance spectroscopy （EIS）. Charge/discharge tests show that the discharge capacity of Al-Co-Y doped Ni（OH）2 reaches 328 mAh/g at 0.2 C and 306 mAh/g at 0.5 C, while Al-Co doped Ni（OH）2 can only discharge a capacity of 308 mAh/g at 0.2 C and 267 mAh/g at 0.5 C.
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