应用离子交换法将N i2+离子引入酚醛凝胶并碳化,制备出块状的碳/氧化镍(C/N iO)复合物材料.原子吸收光谱(AAS)、X射线衍射(XRD)和循环伏安测试(CV)表明,样品中引入的N i含量可以达到5.9%(by m ass),其存在形式主要是N iO,伴有少量未被氧化的金属N i,比电容和电容性能以N i含量为4.4%的表现最佳.
Monolithic carbon/nickel oxide composite materials were synthesized by carbonization of phenol formaldehyde gels that were ion-exchanged with Ni~(2+).Atomic absorption spectroscopy and powder X-ray diffraction technique were used to characterize the chemical composition and physical structure of the materials.The nickel dope amount for this method can reach 5.9 %(by mass).Subsequent cyclic voltammetry experiments indicate that the materials exhibit best capacitive performance at the nickel content of 4.4 %.
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