【摘要】 过渡金属氧化物/氢氧化物电极材料在超级电容器电极材料中占有非常重要的地位。采用在铜片基体表面先化学镀再电化学氧化的方法成功制备出了未掺杂和掺杂B的2种电极材料NiCo（OH）₄和NiCo（OH）₄（6B）,电极材料中Ni和Co的含量比例接近1∶1,其中，B是以氢氧化物的形式掺杂且掺杂量可达6.3wt%。电化学性能测试结果表明，NiCo（OH）₄和NiCo（OH）₄（6B）均具有良好的可逆性，B的掺杂使得NiCo（OH）₄的比电容提高了近1倍。10 000次循环充放电测试结果显示，B的掺杂将NiCo（OH）₄的比电容维持率从153%提高到了181%,说明在NiCo（OH）₄中掺杂B可以提高其比电容和电化学稳定性。阻抗谱测试结果表明，掺杂B的NiCo（OH）₄具有较小的电荷传递电阻，其表面电化学反应速率的增大提高了比电容。更多还原

【Abstract】 Transition metal oxide/hydroxide electrode materials play a very important role in supercapacitor electrode materials. In this paper, two electrode materials, NiCo（OH）₄ and NiCo（OH）₄（6B）, which are undoped and doped with B, were successfully prepared on the surface of copper sheet substrate by electroless followed by electrochemical oxidation. The content ratio of Ni and Co in the two electrode materials are close to 1∶1, where B is doped in the form of hydroxide and the doping amount can reach 6.3wt%. The electrochemical performance test results show that the two electrode materials have good reversibility. The doping of B increases the specific capacitance of NiCo（OH）₄ by nearly 1 times. The test results of 10 000 cycles of charge and discharge show that the doping of B increases the specific capacitance maintenance rate of NiCo（OH）₄ from 153% to 181%. It shows that doping B in NiCo（OH）₄ is beneficial to its specific capacitance and electrochemical stability. Impedance spectrum tests show that NiCo（OH）₄ doped with B has lower charge transfer resistance and faster surface electrochemical reaction rate, thus increasing its specific capacitance.更多还原