中文摘要：

利用不同的分步还原法制备Pd基阳极催化剂，以二氧化铈为修饰剂，硼氢化钠为还原剂，成功制备出Nicore-Nishen／C、Nicore-Pdshen／C两种不同结构碱性燃料电池阳极催化剂。通过物理表征和电化学性能测试，发现Nicore-Pdshen／C催化剂中Pd负载量较高，分散均匀，颗粒较小，在碱性环境下表现出更好的乙醇催化氧化活性和稳定性，在扫描速度为100mV／s的条件下，最高电流密度达到160mA·cm^-2，在-O．5V条件下，电流密度的稳定性均优于Nicore-Nishen／C催化剂。

英文摘要：

Two types of alkaline fuel cell catalysts（Pd~o-Nishon/C and Nicore-Pdshell/C） with different structures have been pre- pared by reduction, using pretreated active carbon as the support, CeO2 as the decorator and NaBH4 as the reducing agent. Accor- ding to physical characterization and electrochemistry test, Nicore-Pdshell/C catalyst has better catalytic oxidation activity of ethanol and stability under the alkaline mediurrL The highest current density was 160 mA · cm^-2 in Nicore-Pdshell/C with 100 mV/s of sweep speed, and its stable current density was higher than Nicore-Nishell/C catalysts.