本文采用离子注入方法制备了新型的镍纳米粒子修饰的ITO电极，制备过程简单，成本低，无需使用其他化学试剂，对环境无污染。通过扫描电子显微镜(SEM)，X射线光电子能谱(XPS)，循环伏安法(CV)对电极表面进行了表征。电极上形成的镍纳米粒子粒径分布为15-40 nm,处于零价金属态，其周围没有稳定剂，交联剂等化学试剂的存在,具有很高的电化学活性，在碱性溶液中对甲醛的氧化具有很强的催化作用，并体现出了良好的稳定性，可以应用到甲醛燃料电池的制备之中。

In this work, we present a novel process for the fabrication of a nickel-nanoparticle-modified electrode using nickel ion implantation. This method is facile, low-cost and environmental friendly without the use of any other chemicals. The modified electrode was verified by scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS) and cyclic voltammetry. Nickel nanoparticles (NiNPs) formed on the electrode are in the zero-valent metallic state with a size distribution in the range of 15–40 nm. In addition, the NiNPs are free from any reagents surrounding or binding to them. The modified electrode showed prominent electrocatalytic activity towards the oxidation of formaldehyde with long-term stability, which could be useful in fuel cells.