Preparation and electrochemical performance of Ni25Co base CP-MOF electrode for contactor
WANG Zhongli1，JU Aiyun2，ZHANG Shuai3，LI Peng4
（1. School of Electrical Engineering, Zhengzhou University of Science and Technology, Zhengzhou 450064, Chi‐
na； 2. Department of Mechanical and Electrical Engineering, Zhengzhou Vocational College of Science and
Technology, Zhengzhou 450000, China； 3. School of Electrical Information Engineering, Zhengzhou University
of Light Technology, Zhengzhou 450000, China； 4. College of Mechanical Engineering, Henan Institute of Engi‐
neering, Zheng
Abstract：A new type of Ni based MOFs with CP as the ligand, Ni25Co-MOF was designed and synthesized by the
solvothermal method. The microstructure and surface morphology of Ni25Co-MOF were studied by XRD, FTIR,
TGA, N2 adsorption and desorption and SEM. The electrochemical performance of Ni25Co-MOF electrode material
was tested. The results show that the Ni
25Co-MOF product with good crystal structure has been prepared, which
can stably exist in the air at 400 °C. The nitrogen adsorption and desorption isotherm formed is an obvious IV iso‐
therm and the hysteresis type is H3. As the porosity increases, MOFs gain higher capacitance. A continuous struc‐
ture is formed in Ni
25Co-MOF, and a large cavity composed of structural entities is formed in the surface region. Af‐
ter 2 000 charge-discharge treatments, the specific capacitance of Ni25Co-MOF electrode is reduced to 86% of the
initial value, showing excellent cycling stability. In the low frequency band of Nyquist curve, a straight line with a
high slope is formed, and the angle between the curve and the abscissa is more than 45°, showing a strong capaci‐
tive ion migration performance.
2022, Vol. 32 
